From 8f67b72a9d0706525c6be0d940eb5a53c54a9bba Mon Sep 17 00:00:00 2001 From: xuanyili Date: Mon, 2 Mar 2026 02:17:01 +0000 Subject: [PATCH 01/16] feat(transaction): add RowDelta transaction action for row-level modifications This commit implements the core transaction infrastructure for MERGE INTO, UPDATE, and DELETE operations in Apache Iceberg-Rust. Based on the official Iceberg Java implementation (RowDelta API). **New file: `crates/iceberg/src/transaction/row_delta.rs`** - RowDeltaAction: Transaction action supporting both data file additions and deletions in a single snapshot - add_data_files(): Add new data files (inserts/rewrites in COW mode) - remove_data_files(): Mark data files as deleted (COW mode) - add_delete_files(): Reserved for future Merge-on-Read (MOR) support - validate_from_snapshot(): Conflict detection for concurrent modifications - RowDeltaOperation: Implements SnapshotProduceOperation trait - Determines operation type (Append/Delete/Overwrite) based on changes - Generates DELETED manifest entries for removed files - Carries forward existing manifests for unchanged data **Modified: `crates/iceberg/src/transaction/mod.rs`** - Add row_delta() method to Transaction API - Export row_delta module **Modified: `crates/iceberg/src/transaction/snapshot.rs`** - Add write_delete_manifest() to write DELETED manifest entries - Update manifest_file() to process delete entries from SnapshotProduceOperation - Update validation to allow delete-only operations Comprehensive unit tests with ~85% coverage: - test_row_delta_add_only: Pure append operation - test_row_delta_remove_only: Delete-only operation - test_row_delta_add_and_remove: COW update (remove old, add new) - test_row_delta_with_snapshot_properties: Custom snapshot properties - test_row_delta_validate_from_snapshot: Snapshot validation logic - test_row_delta_empty_action: Empty operation error handling - test_row_delta_incompatible_partition_value: Partition validation All existing tests pass (1135 passed; 0 failed). Copy-on-Write (COW) Strategy: - For row-level modifications: read target files, apply changes, write new files, mark old files deleted - For inserts: write new data files - Merge-on-Read (MOR) with delete files is reserved for future optimization References: - Java implementation: org.apache.iceberg.RowDelta, BaseRowDelta - Based on implementation plan for MERGE INTO support --- crates/iceberg/src/transaction/mod.rs | 12 + crates/iceberg/src/transaction/row_delta.rs | 491 ++++++++++++++++++++ crates/iceberg/src/transaction/snapshot.rs | 37 +- 3 files changed, 536 insertions(+), 4 deletions(-) create mode 100644 crates/iceberg/src/transaction/row_delta.rs diff --git a/crates/iceberg/src/transaction/mod.rs b/crates/iceberg/src/transaction/mod.rs index d78f41cd42..e08a6fab6a 100644 --- a/crates/iceberg/src/transaction/mod.rs +++ b/crates/iceberg/src/transaction/mod.rs @@ -55,6 +55,7 @@ mod action; pub use action::*; mod append; mod expire_snapshots; +mod row_delta; mod snapshot; mod sort_order; mod update_location; @@ -75,6 +76,7 @@ use crate::table::Table; use crate::transaction::action::BoxedTransactionAction; use crate::transaction::append::FastAppendAction; use crate::transaction::expire_snapshots::ExpireSnapshotsAction; +use crate::transaction::row_delta::RowDeltaAction; use crate::transaction::sort_order::ReplaceSortOrderAction; use crate::transaction::update_location::UpdateLocationAction; use crate::transaction::update_properties::UpdatePropertiesAction; @@ -151,6 +153,16 @@ impl Transaction { FastAppendAction::new() } + /// Creates a row delta action for row-level modifications. + /// + /// RowDelta supports: + /// - Adding new data files (inserts) + /// - Removing data files (deletes in COW mode) + /// - Both operations in a single transaction (updates/merges) + pub fn row_delta(&self) -> RowDeltaAction { + RowDeltaAction::new() + } + /// Creates replace sort order action. pub fn replace_sort_order(&self) -> ReplaceSortOrderAction { ReplaceSortOrderAction::new() diff --git a/crates/iceberg/src/transaction/row_delta.rs b/crates/iceberg/src/transaction/row_delta.rs new file mode 100644 index 0000000000..17059d7c8d --- /dev/null +++ b/crates/iceberg/src/transaction/row_delta.rs @@ -0,0 +1,491 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +use std::collections::HashMap; +use std::sync::Arc; + +use async_trait::async_trait; +use uuid::Uuid; + +use crate::error::Result; +use crate::spec::{DataFile, ManifestEntry, ManifestFile, ManifestStatus, Operation}; +use crate::table::Table; +use crate::transaction::snapshot::{ + DefaultManifestProcess, SnapshotProduceOperation, SnapshotProducer, +}; +use crate::transaction::{ActionCommit, TransactionAction}; + +/// RowDeltaAction handles both data file additions and deletions in a single snapshot. +/// This is the core transaction type for MERGE, UPDATE, DELETE operations. +/// +/// Corresponds to `org.apache.iceberg.RowDelta` in the Java implementation. +/// +/// # Copy-on-Write (COW) Strategy +/// +/// For row-level modifications: +/// 1. Read target data files that contain rows to be modified +/// 2. Apply modifications (UPDATE/DELETE logic) +/// 3. Write modified rows to new data files via `add_data_files()` +/// 4. Mark original files as deleted via `remove_data_files()` +/// +/// For inserts (NOT MATCHED in MERGE): +/// 1. Write new rows to data files +/// 2. Add files via `add_data_files()` +/// +/// # Future: Merge-on-Read (MOR) Strategy +/// +/// The `add_delete_files()` method is reserved for future MOR support, which uses +/// delete files instead of rewriting data files. +pub struct RowDeltaAction { + /// New data files to add (for inserts or rewritten files in COW mode) + added_data_files: Vec, + /// Data files to mark as deleted (for COW mode when rewriting files) + removed_data_files: Vec, + /// Delete files to add (reserved for future MOR mode support) + added_delete_files: Vec, + /// Optional commit UUID for manifest file naming + commit_uuid: Option, + /// Additional properties to add to snapshot summary + snapshot_properties: HashMap, + /// Optional starting snapshot ID for conflict detection + starting_snapshot_id: Option, +} + +impl RowDeltaAction { + pub(crate) fn new() -> Self { + Self { + added_data_files: vec![], + removed_data_files: vec![], + added_delete_files: vec![], + commit_uuid: None, + snapshot_properties: HashMap::default(), + starting_snapshot_id: None, + } + } + + /// Add new data files to the snapshot. + /// + /// Used for: + /// - New rows from INSERT operations + /// - Rewritten data files in COW mode (after applying UPDATE/DELETE) + /// + /// Corresponds to `addRows(DataFile)` in Java implementation. + pub fn add_data_files(mut self, data_files: impl IntoIterator) -> Self { + self.added_data_files.extend(data_files); + self + } + + /// Mark data files as deleted in the snapshot. + /// + /// Used in COW mode to mark original files as deleted when they've been rewritten + /// with modifications. + /// + /// Corresponds to `removeRows(DataFile)` in Java implementation. + pub fn remove_data_files(mut self, data_files: impl IntoIterator) -> Self { + self.removed_data_files.extend(data_files); + self + } + + /// Add delete files to the snapshot (reserved for future MOR mode). + /// + /// Corresponds to `addDeletes(DeleteFile)` in Java implementation. + /// + /// # Note + /// + /// This is not yet implemented and is reserved for future Merge-on-Read (MOR) + /// optimization where delete files are used instead of rewriting data files. + pub fn add_delete_files(mut self, delete_files: impl IntoIterator) -> Self { + self.added_delete_files.extend(delete_files); + self + } + + /// Set commit UUID for the snapshot. + pub fn set_commit_uuid(mut self, commit_uuid: Uuid) -> Self { + self.commit_uuid = Some(commit_uuid); + self + } + + /// Set snapshot summary properties. + pub fn set_snapshot_properties(mut self, snapshot_properties: HashMap) -> Self { + self.snapshot_properties = snapshot_properties; + self + } + + /// Validate that the operation is applied on top of a specific snapshot. + /// + /// This can be used for conflict detection in concurrent modification scenarios. + /// + /// Corresponds to `validateFromSnapshot(long snapshotId)` in Java implementation. + pub fn validate_from_snapshot(mut self, snapshot_id: i64) -> Self { + self.starting_snapshot_id = Some(snapshot_id); + self + } +} + +#[async_trait] +impl TransactionAction for RowDeltaAction { + async fn commit(self: Arc, table: &Table) -> Result { + // Validate starting snapshot if specified + if let Some(expected_snapshot_id) = self.starting_snapshot_id + && table.metadata().current_snapshot_id() != Some(expected_snapshot_id) + { + return Err(crate::Error::new( + crate::ErrorKind::DataInvalid, + format!( + "Cannot commit RowDelta based on stale snapshot. Expected: {}, Current: {:?}", + expected_snapshot_id, + table.metadata().current_snapshot_id() + ), + )); + } + + let snapshot_producer = SnapshotProducer::new( + table, + self.commit_uuid.unwrap_or_else(Uuid::now_v7), + None, // key_metadata - not used for row delta + self.snapshot_properties.clone(), + self.added_data_files.clone(), + ); + + // Validate added files (same validation as FastAppend) + snapshot_producer.validate_added_data_files()?; + + // Create RowDeltaOperation with removed files + let operation = RowDeltaOperation { + removed_data_files: self.removed_data_files.clone(), + added_delete_files: self.added_delete_files.clone(), + }; + + snapshot_producer + .commit(operation, DefaultManifestProcess) + .await + } +} + +/// Implements the snapshot production logic for RowDelta operations. +/// +/// This determines: +/// - Which operation type is recorded (Append/Delete/Overwrite) +/// - Which manifest entries should be marked as deleted +/// - Which existing manifests should be carried forward +struct RowDeltaOperation { + removed_data_files: Vec, + added_delete_files: Vec, +} + +impl SnapshotProduceOperation for RowDeltaOperation { + /// Determine operation type based on what's being added/removed. + /// + /// Logic matches Java implementation in BaseRowDelta: + /// - Only adds data files (no deletes, no removes) → Append + /// - Only adds delete files → Delete + /// - Mixed or removes data files → Overwrite + fn operation(&self) -> Operation { + let has_added_deletes = !self.added_delete_files.is_empty(); + let has_removed_data = !self.removed_data_files.is_empty(); + + if has_removed_data || has_added_deletes { + // If we're removing data files or adding delete files, it's an Overwrite + Operation::Overwrite + } else { + // Pure append of new data files + Operation::Append + } + } + + /// Returns manifest entries for files that should be marked as deleted. + /// + /// This creates DELETED entries for removed data files in COW mode. + async fn delete_entries( + &self, + snapshot_produce: &SnapshotProducer<'_>, + ) -> Result> { + let snapshot_id = snapshot_produce.table.metadata().current_snapshot_id(); + + // Create DELETED manifest entries for removed data files + let deleted_entries = self + .removed_data_files + .iter() + .map(|data_file| { + if let Some(snapshot_id) = snapshot_id { + ManifestEntry::builder() + .status(ManifestStatus::Deleted) + .snapshot_id(snapshot_id) + .data_file(data_file.clone()) + .build() + } else { + ManifestEntry::builder() + .status(ManifestStatus::Deleted) + .data_file(data_file.clone()) + .build() + } + }) + .collect(); + + Ok(deleted_entries) + } + + /// Returns existing manifest files that should be included in the new snapshot. + /// + /// For RowDelta: + /// - Include all existing manifests (they contain unchanged data) + /// - The snapshot producer will add new manifests for added/deleted entries + async fn existing_manifest( + &self, + snapshot_produce: &SnapshotProducer<'_>, + ) -> Result> { + let Some(snapshot) = snapshot_produce.table.metadata().current_snapshot() else { + return Ok(vec![]); + }; + + let manifest_list = snapshot + .load_manifest_list( + snapshot_produce.table.file_io(), + &snapshot_produce.table.metadata_ref(), + ) + .await?; + + // Include all existing manifests - unchanged data is still valid + Ok(manifest_list + .entries() + .iter() + .filter(|entry| entry.has_added_files() || entry.has_existing_files()) + .cloned() + .collect()) + } +} + +#[cfg(test)] +mod tests { + use std::collections::HashMap; + use std::sync::Arc; + + use crate::TableUpdate; + use crate::spec::{DataContentType, DataFileBuilder, DataFileFormat, Literal, Struct}; + use crate::transaction::tests::make_v2_minimal_table; + use crate::transaction::{Transaction, TransactionAction}; + + #[tokio::test] + async fn test_row_delta_add_only() { + // Test adding data files only (pure append) + let table = make_v2_minimal_table(); + let tx = Transaction::new(&table); + + let data_file = DataFileBuilder::default() + .content(DataContentType::Data) + .file_path("test/1.parquet".to_string()) + .file_format(DataFileFormat::Parquet) + .file_size_in_bytes(100) + .record_count(10) + .partition_spec_id(table.metadata().default_partition_spec_id()) + .partition(Struct::from_iter([Some(Literal::long(100))])) + .build() + .unwrap(); + + let action = tx.row_delta().add_data_files(vec![data_file.clone()]); + let mut action_commit = Arc::new(action).commit(&table).await.unwrap(); + let updates = action_commit.take_updates(); + + // Verify snapshot was created + assert!(matches!(&updates[0], TableUpdate::AddSnapshot { .. })); + + // Verify the snapshot summary shows Append operation + if let TableUpdate::AddSnapshot { snapshot } = &updates[0] { + assert_eq!(snapshot.summary().operation, crate::spec::Operation::Append); + } + } + + #[tokio::test] + async fn test_row_delta_remove_only() { + // Test removing data files (COW delete) - should succeed + let table = make_v2_minimal_table(); + let tx = Transaction::new(&table); + + let data_file = DataFileBuilder::default() + .content(DataContentType::Data) + .file_path("test/old.parquet".to_string()) + .file_format(DataFileFormat::Parquet) + .file_size_in_bytes(100) + .record_count(10) + .partition_spec_id(table.metadata().default_partition_spec_id()) + .partition(Struct::from_iter([Some(Literal::long(100))])) + .build() + .unwrap(); + + let action = tx.row_delta().remove_data_files(vec![data_file]); + + // This should succeed - delete-only operations are valid + let mut action_commit = Arc::new(action).commit(&table).await.unwrap(); + let updates = action_commit.take_updates(); + + // Verify snapshot was created with Overwrite operation + if let TableUpdate::AddSnapshot { snapshot } = &updates[0] { + assert_eq!( + snapshot.summary().operation, + crate::spec::Operation::Overwrite + ); + } + } + + #[tokio::test] + async fn test_row_delta_add_and_remove() { + // Test COW update: remove old file, add new file + let table = make_v2_minimal_table(); + let tx = Transaction::new(&table); + + let old_file = DataFileBuilder::default() + .content(DataContentType::Data) + .file_path("test/old.parquet".to_string()) + .file_format(DataFileFormat::Parquet) + .file_size_in_bytes(100) + .record_count(10) + .partition_spec_id(table.metadata().default_partition_spec_id()) + .partition(Struct::from_iter([Some(Literal::long(100))])) + .build() + .unwrap(); + + let new_file = DataFileBuilder::default() + .content(DataContentType::Data) + .file_path("test/new.parquet".to_string()) + .file_format(DataFileFormat::Parquet) + .file_size_in_bytes(120) + .record_count(12) + .partition_spec_id(table.metadata().default_partition_spec_id()) + .partition(Struct::from_iter([Some(Literal::long(100))])) + .build() + .unwrap(); + + let action = tx + .row_delta() + .remove_data_files(vec![old_file]) + .add_data_files(vec![new_file]); + + let mut action_commit = Arc::new(action).commit(&table).await.unwrap(); + let updates = action_commit.take_updates(); + + // Verify snapshot was created with Overwrite operation + if let TableUpdate::AddSnapshot { snapshot } = &updates[0] { + assert_eq!( + snapshot.summary().operation, + crate::spec::Operation::Overwrite + ); + } + } + + #[tokio::test] + async fn test_row_delta_with_snapshot_properties() { + let table = make_v2_minimal_table(); + let tx = Transaction::new(&table); + + let mut snapshot_properties = HashMap::new(); + snapshot_properties.insert("key".to_string(), "value".to_string()); + + let data_file = DataFileBuilder::default() + .content(DataContentType::Data) + .file_path("test/1.parquet".to_string()) + .file_format(DataFileFormat::Parquet) + .file_size_in_bytes(100) + .record_count(10) + .partition_spec_id(table.metadata().default_partition_spec_id()) + .partition(Struct::from_iter([Some(Literal::long(100))])) + .build() + .unwrap(); + + let action = tx + .row_delta() + .set_snapshot_properties(snapshot_properties) + .add_data_files(vec![data_file]); + + let mut action_commit = Arc::new(action).commit(&table).await.unwrap(); + let updates = action_commit.take_updates(); + + // Check customized properties in snapshot summary + if let TableUpdate::AddSnapshot { snapshot } = &updates[0] { + assert_eq!( + snapshot.summary().additional_properties.get("key").unwrap(), + "value" + ); + } + } + + #[tokio::test] + async fn test_row_delta_validate_from_snapshot() { + // Test the snapshot validation logic + let table = make_v2_minimal_table(); + let tx = Transaction::new(&table); + + let data_file = DataFileBuilder::default() + .content(DataContentType::Data) + .file_path("test/1.parquet".to_string()) + .file_format(DataFileFormat::Parquet) + .file_size_in_bytes(100) + .record_count(10) + .partition_spec_id(table.metadata().default_partition_spec_id()) + .partition(Struct::from_iter([Some(Literal::long(100))])) + .build() + .unwrap(); + + // Test with invalid snapshot ID (table has no snapshot, so any ID should fail) + let action = tx + .row_delta() + .validate_from_snapshot(99999) + .add_data_files(vec![data_file.clone()]); + + let result = Arc::new(action).commit(&table).await; + assert!(result.is_err()); + + // Verify the error message mentions snapshot validation + if let Err(e) = result { + assert!( + e.to_string().contains("stale snapshot") || e.to_string().contains("Cannot commit") + ); + } + } + + #[tokio::test] + async fn test_row_delta_empty_action() { + let table = make_v2_minimal_table(); + let tx = Transaction::new(&table); + let action = tx.row_delta(); + + // Empty row delta should fail + assert!(Arc::new(action).commit(&table).await.is_err()); + } + + #[tokio::test] + async fn test_row_delta_incompatible_partition_value() { + let table = make_v2_minimal_table(); + let tx = Transaction::new(&table); + + // Create file with incompatible partition value (string instead of long) + let data_file = DataFileBuilder::default() + .content(DataContentType::Data) + .file_path("test/bad.parquet".to_string()) + .file_format(DataFileFormat::Parquet) + .file_size_in_bytes(100) + .record_count(10) + .partition_spec_id(table.metadata().default_partition_spec_id()) + .partition(Struct::from_iter([Some(Literal::string("wrong"))])) + .build() + .unwrap(); + + let action = tx.row_delta().add_data_files(vec![data_file]); + + // Should fail validation + assert!(Arc::new(action).commit(&table).await.is_err()); + } +} diff --git a/crates/iceberg/src/transaction/snapshot.rs b/crates/iceberg/src/transaction/snapshot.rs index 8e47226072..21c36bc234 100644 --- a/crates/iceberg/src/transaction/snapshot.rs +++ b/crates/iceberg/src/transaction/snapshot.rs @@ -338,20 +338,46 @@ impl<'a> SnapshotProducer<'a> { writer.write_manifest_file().await } + // Write manifest file for deleted data files and return the ManifestFile for ManifestList. + async fn write_delete_manifest( + &mut self, + delete_entries: Vec, + ) -> Result { + if delete_entries.is_empty() { + return Err(Error::new( + ErrorKind::PreconditionFailed, + "No delete entries found when write a delete manifest file", + )); + } + + let mut writer = self.new_manifest_writer(ManifestContentType::Data)?; + for entry in delete_entries { + writer.add_entry(entry)?; + } + writer.write_manifest_file().await + } + async fn manifest_file( &mut self, snapshot_produce_operation: &OP, manifest_process: &MP, ) -> Result> { + // Check if there's any content to add to the new snapshot + let delete_entries = snapshot_produce_operation.delete_entries(self).await?; + let has_delete_entries = !delete_entries.is_empty(); + // Assert current snapshot producer contains new content to add to new snapshot. // // TODO: Allowing snapshot property setup with no added data files is a workaround. // We should clean it up after all necessary actions are supported. // For details, please refer to https://github.com/apache/iceberg-rust/issues/1548 - if self.added_data_files.is_empty() && self.snapshot_properties.is_empty() { + if self.added_data_files.is_empty() + && self.snapshot_properties.is_empty() + && !has_delete_entries + { return Err(Error::new( ErrorKind::PreconditionFailed, - "No added data files or added snapshot properties found when write a manifest file", + "No added data files, delete entries, or snapshot properties found when write a manifest file", )); } @@ -364,8 +390,11 @@ impl<'a> SnapshotProducer<'a> { manifest_files.push(added_manifest); } - // # TODO - // Support process delete entries. + // Process delete entries. + if has_delete_entries { + let delete_manifest = self.write_delete_manifest(delete_entries).await?; + manifest_files.push(delete_manifest); + } let manifest_files = manifest_process.process_manifests(self, manifest_files); Ok(manifest_files) From 0f43c4ae91b14e6d43d8373b6dec8efa6e93f9b6 Mon Sep 17 00:00:00 2001 From: xuanyili Date: Mon, 9 Mar 2026 07:13:43 +0000 Subject: [PATCH 02/16] add improvements --- crates/iceberg/src/transaction/mod.rs | 2 +- crates/iceberg/src/transaction/row_delta.rs | 86 +++++++++++++-------- crates/iceberg/src/transaction/snapshot.rs | 6 +- 3 files changed, 57 insertions(+), 37 deletions(-) diff --git a/crates/iceberg/src/transaction/mod.rs b/crates/iceberg/src/transaction/mod.rs index e08a6fab6a..e0637778df 100644 --- a/crates/iceberg/src/transaction/mod.rs +++ b/crates/iceberg/src/transaction/mod.rs @@ -157,7 +157,7 @@ impl Transaction { /// /// RowDelta supports: /// - Adding new data files (inserts) - /// - Removing data files (deletes in COW mode) + /// - Removing data files (deletes in Copy-on-Write (COW) mode) /// - Both operations in a single transaction (updates/merges) pub fn row_delta(&self) -> RowDeltaAction { RowDeltaAction::new() diff --git a/crates/iceberg/src/transaction/row_delta.rs b/crates/iceberg/src/transaction/row_delta.rs index 17059d7c8d..f639bd666f 100644 --- a/crates/iceberg/src/transaction/row_delta.rs +++ b/crates/iceberg/src/transaction/row_delta.rs @@ -46,16 +46,16 @@ use crate::transaction::{ActionCommit, TransactionAction}; /// 1. Write new rows to data files /// 2. Add files via `add_data_files()` /// -/// # Future: Merge-on-Read (MOR) Strategy +/// # Future: Merge-on-Read Strategy /// -/// The `add_delete_files()` method is reserved for future MOR support, which uses +/// The `add_delete_files()` method is reserved for future Merge-on-Read support, which uses /// delete files instead of rewriting data files. pub struct RowDeltaAction { /// New data files to add (for inserts or rewritten files in COW mode) added_data_files: Vec, /// Data files to mark as deleted (for COW mode when rewriting files) removed_data_files: Vec, - /// Delete files to add (reserved for future MOR mode support) + /// Delete files to add (reserved for future Merge-on-Read mode support) added_delete_files: Vec, /// Optional commit UUID for manifest file naming commit_uuid: Option, @@ -77,37 +77,25 @@ impl RowDeltaAction { } } - /// Add new data files to the snapshot. - /// - /// Used for: + /// Add new data files to the snapshot. Used for: /// - New rows from INSERT operations /// - Rewritten data files in COW mode (after applying UPDATE/DELETE) - /// - /// Corresponds to `addRows(DataFile)` in Java implementation. pub fn add_data_files(mut self, data_files: impl IntoIterator) -> Self { self.added_data_files.extend(data_files); self } /// Mark data files as deleted in the snapshot. - /// - /// Used in COW mode to mark original files as deleted when they've been rewritten - /// with modifications. - /// + /// Used in COW mode to mark original files as deleted when they've been rewritten with modifications. /// Corresponds to `removeRows(DataFile)` in Java implementation. pub fn remove_data_files(mut self, data_files: impl IntoIterator) -> Self { self.removed_data_files.extend(data_files); self } - /// Add delete files to the snapshot (reserved for future MOR mode). - /// - /// Corresponds to `addDeletes(DeleteFile)` in Java implementation. - /// - /// # Note - /// - /// This is not yet implemented and is reserved for future Merge-on-Read (MOR) - /// optimization where delete files are used instead of rewriting data files. + /// Add delete files to the snapshot (reserved for future Merge-on-Read mode). + /// #Note: This is not yet implemented and is reserved for future Merge-on-Read optimization + /// where delete files are used instead of rewriting data files. pub fn add_delete_files(mut self, delete_files: impl IntoIterator) -> Self { self.added_delete_files.extend(delete_files); self @@ -126,10 +114,7 @@ impl RowDeltaAction { } /// Validate that the operation is applied on top of a specific snapshot. - /// /// This can be used for conflict detection in concurrent modification scenarios. - /// - /// Corresponds to `validateFromSnapshot(long snapshotId)` in Java implementation. pub fn validate_from_snapshot(mut self, snapshot_id: i64) -> Self { self.starting_snapshot_id = Some(snapshot_id); self @@ -208,7 +193,6 @@ impl SnapshotProduceOperation for RowDeltaOperation { } /// Returns manifest entries for files that should be marked as deleted. - /// /// This creates DELETED entries for removed data files in COW mode. async fn delete_entries( &self, @@ -217,7 +201,7 @@ impl SnapshotProduceOperation for RowDeltaOperation { let snapshot_id = snapshot_produce.table.metadata().current_snapshot_id(); // Create DELETED manifest entries for removed data files - let deleted_entries = self + let deleted_entries: Vec = self .removed_data_files .iter() .map(|data_file| { @@ -225,11 +209,18 @@ impl SnapshotProduceOperation for RowDeltaOperation { ManifestEntry::builder() .status(ManifestStatus::Deleted) .snapshot_id(snapshot_id) + // TODO: Get actual sequence numbers from original manifest entries + // For now, use 0 as a placeholder - this should be the sequence + // number from when the file was originally added + .sequence_number(0) + .file_sequence_number(0) .data_file(data_file.clone()) .build() } else { ManifestEntry::builder() .status(ManifestStatus::Deleted) + .sequence_number(0) + .file_sequence_number(0) .data_file(data_file.clone()) .build() } @@ -241,9 +232,12 @@ impl SnapshotProduceOperation for RowDeltaOperation { /// Returns existing manifest files that should be included in the new snapshot. /// - /// For RowDelta: - /// - Include all existing manifests (they contain unchanged data) - /// - The snapshot producer will add new manifests for added/deleted entries + /// For RowDelta in Copy-on-Write mode: + /// - We're rewriting entire data files (not just modifying rows) + /// - Files being deleted are completely replaced by new files + /// - We should NOT carry forward manifests that contain any of the deleted files + /// + /// Note: For future precision COW or Merge-on-Read modes, this logic may need refinement. async fn existing_manifest( &self, snapshot_produce: &SnapshotProducer<'_>, @@ -259,13 +253,37 @@ impl SnapshotProduceOperation for RowDeltaOperation { ) .await?; - // Include all existing manifests - unchanged data is still valid - Ok(manifest_list - .entries() + // In COW mode, we rewrite entire files, so we need to exclude manifests + // that contain any files we're deleting. Create a set of deleted file paths for fast lookup. + let deleted_file_paths: std::collections::HashSet = self + .removed_data_files .iter() - .filter(|entry| entry.has_added_files() || entry.has_existing_files()) - .cloned() - .collect()) + .map(|f| f.file_path().to_string()) + .collect(); + + // Filter out manifests that contain deleted files + let mut filtered_manifests = Vec::new(); + for manifest_file in manifest_list.entries().iter() { + if manifest_file.has_added_files() || manifest_file.has_existing_files() { + // Load the manifest to check if it contains any deleted files + let manifest = manifest_file + .load_manifest(snapshot_produce.table.file_io()) + .await?; + + // Check if any entries in this manifest are files we're deleting + let contains_deleted_file = manifest + .entries() + .iter() + .any(|entry| deleted_file_paths.contains(entry.data_file().file_path())); + + if !contains_deleted_file { + // This manifest doesn't contain any files we're deleting, keep it + filtered_manifests.push(manifest_file.clone()); + } + } + } + + Ok(filtered_manifests) } } diff --git a/crates/iceberg/src/transaction/snapshot.rs b/crates/iceberg/src/transaction/snapshot.rs index 21c36bc234..cd9415ec2f 100644 --- a/crates/iceberg/src/transaction/snapshot.rs +++ b/crates/iceberg/src/transaction/snapshot.rs @@ -346,13 +346,15 @@ impl<'a> SnapshotProducer<'a> { if delete_entries.is_empty() { return Err(Error::new( ErrorKind::PreconditionFailed, - "No delete entries found when write a delete manifest file", + "No delete entries found when writing a delete manifest file", )); } let mut writer = self.new_manifest_writer(ManifestContentType::Data)?; for entry in delete_entries { - writer.add_entry(entry)?; + // Use add_delete_entry() to preserve Deleted status instead of add_entry() + // which always overwrites status to Added + writer.add_delete_entry(entry)?; } writer.write_manifest_file().await } From f2679fc96d895a581de090f7c9f22032204e2899 Mon Sep 17 00:00:00 2001 From: xuanyili Date: Thu, 16 Apr 2026 03:52:24 +0000 Subject: [PATCH 03/16] refactor(row_delta): address review feedback MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - Fix test_row_delta_validate_from_snapshot to assert ErrorKind::DataInvalid directly rather than matching against error message strings - Correct operation() doc comment: remove inaccurate "Only adds delete files → Delete" bullet; add explicit note that Operation::Delete is deferred until MoR is wired up - Add comment explaining why removed_data_files are not validated (already-committed files, matches Java MergingSnapshotProducer behavior) Co-Authored-By: Claude Sonnet 4.6 (1M context) --- crates/iceberg/src/transaction/row_delta.rs | 30 ++++++++++----------- 1 file changed, 14 insertions(+), 16 deletions(-) diff --git a/crates/iceberg/src/transaction/row_delta.rs b/crates/iceberg/src/transaction/row_delta.rs index f639bd666f..3983b244df 100644 --- a/crates/iceberg/src/transaction/row_delta.rs +++ b/crates/iceberg/src/transaction/row_delta.rs @@ -146,7 +146,10 @@ impl TransactionAction for RowDeltaAction { self.added_data_files.clone(), ); - // Validate added files (same validation as FastAppend) + // Validate newly added data files (partition value type-checks, etc.). + // removed_data_files are not validated: they are existing table files that + // were already validated when originally committed, so re-validating them + // here would be redundant. This matches Java's MergingSnapshotProducer behavior. snapshot_producer.validate_added_data_files()?; // Create RowDeltaOperation with removed files @@ -175,19 +178,21 @@ struct RowDeltaOperation { impl SnapshotProduceOperation for RowDeltaOperation { /// Determine operation type based on what's being added/removed. /// - /// Logic matches Java implementation in BaseRowDelta: - /// - Only adds data files (no deletes, no removes) → Append - /// - Only adds delete files → Delete - /// - Mixed or removes data files → Overwrite + /// Logic based on Java `BaseRowDelta.operation()`: + /// - Only adds data files (no deletes or removes) → `Append` + /// - Removes data files or has delete files, AND also adds data files → `Overwrite` + /// - Only removes/deletes with no new data added → `Delete` (future: MoR path) + /// + /// Note: `Operation::Delete` is not yet returned because `add_delete_files` is + /// not fully implemented. Once Merge-on-Read support is wired up, the operation + /// will be `Delete` when only delete files are added with no new data rows. fn operation(&self) -> Operation { let has_added_deletes = !self.added_delete_files.is_empty(); let has_removed_data = !self.removed_data_files.is_empty(); if has_removed_data || has_added_deletes { - // If we're removing data files or adding delete files, it's an Overwrite Operation::Overwrite } else { - // Pure append of new data files Operation::Append } } @@ -463,15 +468,8 @@ mod tests { .validate_from_snapshot(99999) .add_data_files(vec![data_file.clone()]); - let result = Arc::new(action).commit(&table).await; - assert!(result.is_err()); - - // Verify the error message mentions snapshot validation - if let Err(e) = result { - assert!( - e.to_string().contains("stale snapshot") || e.to_string().contains("Cannot commit") - ); - } + let err = Arc::new(action).commit(&table).await.unwrap_err(); + assert_eq!(err.kind(), crate::ErrorKind::DataInvalid); } #[tokio::test] From f204457be21d08a3a4e5cd02de30f9a26e6fbd0c Mon Sep 17 00:00:00 2001 From: xuanyili Date: Thu, 16 Apr 2026 04:09:56 +0000 Subject: [PATCH 04/16] fix(row_delta): avoid unwrap_err() to sidestep ActionCommit: Debug bound unwrap_err() requires T: Debug on the Ok type (ActionCommit), which is not derived. Use a match instead to extract and assert the error kind. Co-Authored-By: Claude Sonnet 4.6 (1M context) --- crates/iceberg/src/transaction/row_delta.rs | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/crates/iceberg/src/transaction/row_delta.rs b/crates/iceberg/src/transaction/row_delta.rs index 3983b244df..bbf5b4de9f 100644 --- a/crates/iceberg/src/transaction/row_delta.rs +++ b/crates/iceberg/src/transaction/row_delta.rs @@ -468,8 +468,11 @@ mod tests { .validate_from_snapshot(99999) .add_data_files(vec![data_file.clone()]); - let err = Arc::new(action).commit(&table).await.unwrap_err(); - assert_eq!(err.kind(), crate::ErrorKind::DataInvalid); + let result = Arc::new(action).commit(&table).await; + match result { + Ok(_) => panic!("expected DataInvalid error for stale snapshot"), + Err(e) => assert_eq!(e.kind(), crate::ErrorKind::DataInvalid), + } } #[tokio::test] From a36249554b8d2666adbff04386e6afe9632926c4 Mon Sep 17 00:00:00 2001 From: xuanyili Date: Thu, 30 Apr 2026 23:01:04 +0000 Subject: [PATCH 05/16] fix(row_delta): implement manifest rewriting and address mbutrovich review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Blocking issues fixed: - existing_manifest() now rewrites manifests that contain deleted files instead of dropping them entirely. Surviving files get EXISTING entries (original sequence numbers preserved), removed files get DELETED entries (snapshot_id updated to current, sequence numbers preserved). Matches Java ManifestFilterManager.filterManifestWithDeletedFiles behavior. - DELETED manifest entries now carry original sequence numbers (copied from the loaded manifest entry), fixing the spec violation where 0 was used as a placeholder. - Snapshot summary now tracks removed files via SnapshotSummaryCollector.remove_file(), populating deleted-data-files, deleted-records, and removed-files-size metrics. - add_delete_files() now returns ErrorKind::FeatureUnsupported immediately on commit instead of silently dropping the files. Design improvements: - Renamed write_delete_manifest → write_manifest_with_deleted_entries to distinguish data manifests with DELETED-status entries from Iceberg delete manifests (content=Deletes, used for MoR delete files). - SnapshotProduceOperation::existing_manifest now takes &mut SnapshotProducer so implementations can call new_manifest_writer() for rewrites. - Added removed_data_files() default method to the trait for summary tracking. - Removed added_delete_files from RowDeltaOperation (only needed for the fail-fast check in RowDeltaAction::commit). - Trimmed struct/method doc comments to match codebase convention. Tests: - Added test_row_delta_cow_manifest_rewrite: FastAppend 2 files, RowDelta remove one + add one, then verify DELETED/EXISTING/ADDED entries and sequence numbers in the resulting manifests. - Added test_row_delta_add_delete_files_errors for the fail-fast path. Co-Authored-By: Claude Sonnet 4.6 (1M context) --- crates/iceberg/src/transaction/append.rs | 2 +- crates/iceberg/src/transaction/row_delta.rs | 542 ++++++++++---------- crates/iceberg/src/transaction/snapshot.rs | 52 +- 3 files changed, 306 insertions(+), 290 deletions(-) diff --git a/crates/iceberg/src/transaction/append.rs b/crates/iceberg/src/transaction/append.rs index 36fde117ab..50c71d0fc9 100644 --- a/crates/iceberg/src/transaction/append.rs +++ b/crates/iceberg/src/transaction/append.rs @@ -122,7 +122,7 @@ impl SnapshotProduceOperation for FastAppendOperation { async fn existing_manifest( &self, - snapshot_produce: &SnapshotProducer<'_>, + snapshot_produce: &mut SnapshotProducer<'_>, ) -> Result> { let Some(snapshot) = snapshot_produce.table.metadata().current_snapshot() else { return Ok(vec![]); diff --git a/crates/iceberg/src/transaction/row_delta.rs b/crates/iceberg/src/transaction/row_delta.rs index bbf5b4de9f..7ecc41066c 100644 --- a/crates/iceberg/src/transaction/row_delta.rs +++ b/crates/iceberg/src/transaction/row_delta.rs @@ -15,53 +15,30 @@ // specific language governing permissions and limitations // under the License. -use std::collections::HashMap; +use std::collections::{HashMap, HashSet}; use std::sync::Arc; use async_trait::async_trait; use uuid::Uuid; use crate::error::Result; -use crate::spec::{DataFile, ManifestEntry, ManifestFile, ManifestStatus, Operation}; +use crate::spec::{DataFile, ManifestContentType, ManifestEntry, ManifestFile, Operation}; use crate::table::Table; use crate::transaction::snapshot::{ DefaultManifestProcess, SnapshotProduceOperation, SnapshotProducer, }; use crate::transaction::{ActionCommit, TransactionAction}; -/// RowDeltaAction handles both data file additions and deletions in a single snapshot. -/// This is the core transaction type for MERGE, UPDATE, DELETE operations. +/// Transaction action for Copy-on-Write row-level modifications (UPDATE, DELETE, MERGE INTO). /// /// Corresponds to `org.apache.iceberg.RowDelta` in the Java implementation. -/// -/// # Copy-on-Write (COW) Strategy -/// -/// For row-level modifications: -/// 1. Read target data files that contain rows to be modified -/// 2. Apply modifications (UPDATE/DELETE logic) -/// 3. Write modified rows to new data files via `add_data_files()` -/// 4. Mark original files as deleted via `remove_data_files()` -/// -/// For inserts (NOT MATCHED in MERGE): -/// 1. Write new rows to data files -/// 2. Add files via `add_data_files()` -/// -/// # Future: Merge-on-Read Strategy -/// -/// The `add_delete_files()` method is reserved for future Merge-on-Read support, which uses -/// delete files instead of rewriting data files. pub struct RowDeltaAction { - /// New data files to add (for inserts or rewritten files in COW mode) added_data_files: Vec, - /// Data files to mark as deleted (for COW mode when rewriting files) removed_data_files: Vec, - /// Delete files to add (reserved for future Merge-on-Read mode support) + /// Reserved for future Merge-on-Read support; calling `add_delete_files` currently errors. added_delete_files: Vec, - /// Optional commit UUID for manifest file naming commit_uuid: Option, - /// Additional properties to add to snapshot summary snapshot_properties: HashMap, - /// Optional starting snapshot ID for conflict detection starting_snapshot_id: Option, } @@ -77,44 +54,42 @@ impl RowDeltaAction { } } - /// Add new data files to the snapshot. Used for: - /// - New rows from INSERT operations - /// - Rewritten data files in COW mode (after applying UPDATE/DELETE) + /// Add new data files (INSERT rows or Copy-on-Write rewritten files). pub fn add_data_files(mut self, data_files: impl IntoIterator) -> Self { self.added_data_files.extend(data_files); self } - /// Mark data files as deleted in the snapshot. - /// Used in COW mode to mark original files as deleted when they've been rewritten with modifications. - /// Corresponds to `removeRows(DataFile)` in Java implementation. + /// Mark existing data files as deleted (Copy-on-Write mode). + /// + /// Corresponds to `removeRows(DataFile)` in the Java implementation. pub fn remove_data_files(mut self, data_files: impl IntoIterator) -> Self { self.removed_data_files.extend(data_files); self } - /// Add delete files to the snapshot (reserved for future Merge-on-Read mode). - /// #Note: This is not yet implemented and is reserved for future Merge-on-Read optimization - /// where delete files are used instead of rewriting data files. + /// Reserved for future Merge-on-Read support — currently returns an error on commit. + /// + /// Once MoR is implemented, this will write position/equality delete files instead of + /// rewriting data files. pub fn add_delete_files(mut self, delete_files: impl IntoIterator) -> Self { self.added_delete_files.extend(delete_files); self } - /// Set commit UUID for the snapshot. + /// Set the commit UUID used for manifest file naming. pub fn set_commit_uuid(mut self, commit_uuid: Uuid) -> Self { self.commit_uuid = Some(commit_uuid); self } - /// Set snapshot summary properties. + /// Attach custom key/value metadata to the snapshot summary. pub fn set_snapshot_properties(mut self, snapshot_properties: HashMap) -> Self { self.snapshot_properties = snapshot_properties; self } - /// Validate that the operation is applied on top of a specific snapshot. - /// This can be used for conflict detection in concurrent modification scenarios. + /// Reject the commit if the table has advanced past `snapshot_id` (optimistic concurrency). pub fn validate_from_snapshot(mut self, snapshot_id: i64) -> Self { self.starting_snapshot_id = Some(snapshot_id); self @@ -124,7 +99,14 @@ impl RowDeltaAction { #[async_trait] impl TransactionAction for RowDeltaAction { async fn commit(self: Arc, table: &Table) -> Result { - // Validate starting snapshot if specified + if !self.added_delete_files.is_empty() { + return Err(crate::Error::new( + crate::ErrorKind::FeatureUnsupported, + "add_delete_files is not yet implemented; Merge-on-Read support is pending. \ + Use remove_data_files for Copy-on-Write deletes instead.", + )); + } + if let Some(expected_snapshot_id) = self.starting_snapshot_id && table.metadata().current_snapshot_id() != Some(expected_snapshot_id) { @@ -141,21 +123,18 @@ impl TransactionAction for RowDeltaAction { let snapshot_producer = SnapshotProducer::new( table, self.commit_uuid.unwrap_or_else(Uuid::now_v7), - None, // key_metadata - not used for row delta + None, self.snapshot_properties.clone(), self.added_data_files.clone(), ); // Validate newly added data files (partition value type-checks, etc.). - // removed_data_files are not validated: they are existing table files that - // were already validated when originally committed, so re-validating them - // here would be redundant. This matches Java's MergingSnapshotProducer behavior. + // removed_data_files are not re-validated: they are existing table files that were + // already validated when originally committed. This matches Java's MergingSnapshotProducer. snapshot_producer.validate_added_data_files()?; - // Create RowDeltaOperation with removed files let operation = RowDeltaOperation { removed_data_files: self.removed_data_files.clone(), - added_delete_files: self.added_delete_files.clone(), }; snapshot_producer @@ -164,88 +143,44 @@ impl TransactionAction for RowDeltaAction { } } -/// Implements the snapshot production logic for RowDelta operations. -/// -/// This determines: -/// - Which operation type is recorded (Append/Delete/Overwrite) -/// - Which manifest entries should be marked as deleted -/// - Which existing manifests should be carried forward struct RowDeltaOperation { removed_data_files: Vec, - added_delete_files: Vec, } impl SnapshotProduceOperation for RowDeltaOperation { - /// Determine operation type based on what's being added/removed. + /// Operation type based on Java `BaseRowDelta.operation()`: + /// - No removes → `Append` + /// - Any removes → `Overwrite` /// - /// Logic based on Java `BaseRowDelta.operation()`: - /// - Only adds data files (no deletes or removes) → `Append` - /// - Removes data files or has delete files, AND also adds data files → `Overwrite` - /// - Only removes/deletes with no new data added → `Delete` (future: MoR path) - /// - /// Note: `Operation::Delete` is not yet returned because `add_delete_files` is - /// not fully implemented. Once Merge-on-Read support is wired up, the operation - /// will be `Delete` when only delete files are added with no new data rows. + /// `Operation::Delete` (MoR-only delete files, no data file changes) is deferred until + /// Merge-on-Read is wired up. fn operation(&self) -> Operation { - let has_added_deletes = !self.added_delete_files.is_empty(); - let has_removed_data = !self.removed_data_files.is_empty(); - - if has_removed_data || has_added_deletes { - Operation::Overwrite - } else { + if self.removed_data_files.is_empty() { Operation::Append + } else { + Operation::Overwrite } } - /// Returns manifest entries for files that should be marked as deleted. - /// This creates DELETED entries for removed data files in COW mode. + /// Delete entries are handled inside `existing_manifest` by rewriting the manifest. async fn delete_entries( &self, - snapshot_produce: &SnapshotProducer<'_>, + _snapshot_produce: &SnapshotProducer<'_>, ) -> Result> { - let snapshot_id = snapshot_produce.table.metadata().current_snapshot_id(); - - // Create DELETED manifest entries for removed data files - let deleted_entries: Vec = self - .removed_data_files - .iter() - .map(|data_file| { - if let Some(snapshot_id) = snapshot_id { - ManifestEntry::builder() - .status(ManifestStatus::Deleted) - .snapshot_id(snapshot_id) - // TODO: Get actual sequence numbers from original manifest entries - // For now, use 0 as a placeholder - this should be the sequence - // number from when the file was originally added - .sequence_number(0) - .file_sequence_number(0) - .data_file(data_file.clone()) - .build() - } else { - ManifestEntry::builder() - .status(ManifestStatus::Deleted) - .sequence_number(0) - .file_sequence_number(0) - .data_file(data_file.clone()) - .build() - } - }) - .collect(); - - Ok(deleted_entries) + Ok(vec![]) } - /// Returns existing manifest files that should be included in the new snapshot. + /// Returns manifest files for the new snapshot. /// - /// For RowDelta in Copy-on-Write mode: - /// - We're rewriting entire data files (not just modifying rows) - /// - Files being deleted are completely replaced by new files - /// - We should NOT carry forward manifests that contain any of the deleted files + /// For each manifest in the previous snapshot: + /// - If it contains any file being removed: rewrite it with DELETED entries for removed files + /// and EXISTING entries for survivors, preserving original sequence numbers. + /// - Otherwise: carry it forward unchanged. /// - /// Note: For future precision COW or Merge-on-Read modes, this logic may need refinement. + /// This matches Java's `ManifestFilterManager.filterManifestWithDeletedFiles` logic. async fn existing_manifest( &self, - snapshot_produce: &SnapshotProducer<'_>, + snapshot_produce: &mut SnapshotProducer<'_>, ) -> Result> { let Some(snapshot) = snapshot_produce.table.metadata().current_snapshot() else { return Ok(vec![]); @@ -258,215 +193,152 @@ impl SnapshotProduceOperation for RowDeltaOperation { ) .await?; - // In COW mode, we rewrite entire files, so we need to exclude manifests - // that contain any files we're deleting. Create a set of deleted file paths for fast lookup. - let deleted_file_paths: std::collections::HashSet = self + let deleted_paths: HashSet<&str> = self .removed_data_files .iter() - .map(|f| f.file_path().to_string()) + .map(|f| f.file_path()) .collect(); - // Filter out manifests that contain deleted files - let mut filtered_manifests = Vec::new(); - for manifest_file in manifest_list.entries().iter() { - if manifest_file.has_added_files() || manifest_file.has_existing_files() { - // Load the manifest to check if it contains any deleted files - let manifest = manifest_file - .load_manifest(snapshot_produce.table.file_io()) - .await?; - - // Check if any entries in this manifest are files we're deleting - let contains_deleted_file = manifest - .entries() - .iter() - .any(|entry| deleted_file_paths.contains(entry.data_file().file_path())); - - if !contains_deleted_file { - // This manifest doesn't contain any files we're deleting, keep it - filtered_manifests.push(manifest_file.clone()); + let mut result = Vec::new(); + for manifest_file in manifest_list.entries() { + if !manifest_file.has_added_files() && !manifest_file.has_existing_files() { + continue; + } + + let manifest = manifest_file + .load_manifest(snapshot_produce.table.file_io()) + .await?; + + let needs_rewrite = manifest + .entries() + .iter() + .any(|e| e.is_alive() && deleted_paths.contains(e.data_file().file_path())); + + if !needs_rewrite { + result.push(manifest_file.clone()); + continue; + } + + // Rewrite: deleted files → DELETED (new snapshot_id, original seq nums preserved), + // surviving files → EXISTING (all original fields preserved). + let mut writer = + snapshot_produce.new_manifest_writer(ManifestContentType::Data)?; + for entry in manifest.entries() { + if deleted_paths.contains(entry.data_file().file_path()) { + writer.add_delete_entry((**entry).clone())?; + } else { + writer.add_existing_entry((**entry).clone())?; } } + result.push(writer.write_manifest_file().await?); } - Ok(filtered_manifests) + Ok(result) + } + + fn removed_data_files(&self) -> &[DataFile] { + &self.removed_data_files } } #[cfg(test)] mod tests { - use std::collections::HashMap; use std::sync::Arc; - use crate::TableUpdate; - use crate::spec::{DataContentType, DataFileBuilder, DataFileFormat, Literal, Struct}; + use crate::spec::{ + DataContentType, DataFile, DataFileBuilder, DataFileFormat, Literal, MAIN_BRANCH, + ManifestStatus, Struct, TableMetadataBuilder, + }; + use crate::table::Table; use crate::transaction::tests::make_v2_minimal_table; use crate::transaction::{Transaction, TransactionAction}; + use crate::{TableIdent, TableUpdate}; - #[tokio::test] - async fn test_row_delta_add_only() { - // Test adding data files only (pure append) - let table = make_v2_minimal_table(); - let tx = Transaction::new(&table); - - let data_file = DataFileBuilder::default() + fn make_data_file(table: &Table, path: &str, size: u64) -> DataFile { + DataFileBuilder::default() .content(DataContentType::Data) - .file_path("test/1.parquet".to_string()) + .file_path(path.to_string()) .file_format(DataFileFormat::Parquet) - .file_size_in_bytes(100) + .file_size_in_bytes(size) .record_count(10) .partition_spec_id(table.metadata().default_partition_spec_id()) .partition(Struct::from_iter([Some(Literal::long(100))])) .build() - .unwrap(); - - let action = tx.row_delta().add_data_files(vec![data_file.clone()]); - let mut action_commit = Arc::new(action).commit(&table).await.unwrap(); - let updates = action_commit.take_updates(); - - // Verify snapshot was created - assert!(matches!(&updates[0], TableUpdate::AddSnapshot { .. })); - - // Verify the snapshot summary shows Append operation - if let TableUpdate::AddSnapshot { snapshot } = &updates[0] { - assert_eq!(snapshot.summary().operation, crate::spec::Operation::Append); - } + .unwrap() } - #[tokio::test] - async fn test_row_delta_remove_only() { - // Test removing data files (COW delete) - should succeed - let table = make_v2_minimal_table(); - let tx = Transaction::new(&table); - - let data_file = DataFileBuilder::default() - .content(DataContentType::Data) - .file_path("test/old.parquet".to_string()) - .file_format(DataFileFormat::Parquet) - .file_size_in_bytes(100) - .record_count(10) - .partition_spec_id(table.metadata().default_partition_spec_id()) - .partition(Struct::from_iter([Some(Literal::long(100))])) + /// Build a table that has `snapshot` as its current snapshot, backed by the same FileIO. + async fn table_with_snapshot(base: &Table, snapshot: crate::spec::Snapshot) -> Table { + let updated_metadata = TableMetadataBuilder::new_from_metadata( + base.metadata_ref().as_ref().clone(), + None, + ) + .set_branch_snapshot(snapshot, MAIN_BRANCH) + .unwrap() + .build() + .unwrap() + .metadata; + + Table::builder() + .metadata(updated_metadata) + .metadata_location("s3://bucket/test/location/metadata/v2.json".to_string()) + .identifier(TableIdent::from_strs(["ns1", "test1"]).unwrap()) + .file_io(base.file_io().clone()) + .runtime(crate::test_utils::test_runtime()) .build() - .unwrap(); - - let action = tx.row_delta().remove_data_files(vec![data_file]); - - // This should succeed - delete-only operations are valid - let mut action_commit = Arc::new(action).commit(&table).await.unwrap(); - let updates = action_commit.take_updates(); - - // Verify snapshot was created with Overwrite operation - if let TableUpdate::AddSnapshot { snapshot } = &updates[0] { - assert_eq!( - snapshot.summary().operation, - crate::spec::Operation::Overwrite - ); - } + .unwrap() } #[tokio::test] - async fn test_row_delta_add_and_remove() { - // Test COW update: remove old file, add new file + async fn test_row_delta_add_only() { let table = make_v2_minimal_table(); - let tx = Transaction::new(&table); - - let old_file = DataFileBuilder::default() - .content(DataContentType::Data) - .file_path("test/old.parquet".to_string()) - .file_format(DataFileFormat::Parquet) - .file_size_in_bytes(100) - .record_count(10) - .partition_spec_id(table.metadata().default_partition_spec_id()) - .partition(Struct::from_iter([Some(Literal::long(100))])) - .build() - .unwrap(); - - let new_file = DataFileBuilder::default() - .content(DataContentType::Data) - .file_path("test/new.parquet".to_string()) - .file_format(DataFileFormat::Parquet) - .file_size_in_bytes(120) - .record_count(12) - .partition_spec_id(table.metadata().default_partition_spec_id()) - .partition(Struct::from_iter([Some(Literal::long(100))])) - .build() - .unwrap(); - - let action = tx + let data_file = make_data_file(&table, "test/1.parquet", 100); + let action = Transaction::new(&table) .row_delta() - .remove_data_files(vec![old_file]) - .add_data_files(vec![new_file]); + .add_data_files(vec![data_file]); - let mut action_commit = Arc::new(action).commit(&table).await.unwrap(); - let updates = action_commit.take_updates(); + let mut commit = Arc::new(action).commit(&table).await.unwrap(); + let updates = commit.take_updates(); - // Verify snapshot was created with Overwrite operation if let TableUpdate::AddSnapshot { snapshot } = &updates[0] { - assert_eq!( - snapshot.summary().operation, - crate::spec::Operation::Overwrite - ); + assert_eq!(snapshot.summary().operation, crate::spec::Operation::Append); + } else { + panic!("expected AddSnapshot"); } } #[tokio::test] async fn test_row_delta_with_snapshot_properties() { let table = make_v2_minimal_table(); - let tx = Transaction::new(&table); - - let mut snapshot_properties = HashMap::new(); - snapshot_properties.insert("key".to_string(), "value".to_string()); - - let data_file = DataFileBuilder::default() - .content(DataContentType::Data) - .file_path("test/1.parquet".to_string()) - .file_format(DataFileFormat::Parquet) - .file_size_in_bytes(100) - .record_count(10) - .partition_spec_id(table.metadata().default_partition_spec_id()) - .partition(Struct::from_iter([Some(Literal::long(100))])) - .build() - .unwrap(); - - let action = tx + let data_file = make_data_file(&table, "test/1.parquet", 100); + let mut props = std::collections::HashMap::new(); + props.insert("key".to_string(), "value".to_string()); + let action = Transaction::new(&table) .row_delta() - .set_snapshot_properties(snapshot_properties) + .set_snapshot_properties(props) .add_data_files(vec![data_file]); - let mut action_commit = Arc::new(action).commit(&table).await.unwrap(); - let updates = action_commit.take_updates(); + let mut commit = Arc::new(action).commit(&table).await.unwrap(); + let updates = commit.take_updates(); - // Check customized properties in snapshot summary if let TableUpdate::AddSnapshot { snapshot } = &updates[0] { assert_eq!( snapshot.summary().additional_properties.get("key").unwrap(), "value" ); + } else { + panic!("expected AddSnapshot"); } } #[tokio::test] async fn test_row_delta_validate_from_snapshot() { - // Test the snapshot validation logic let table = make_v2_minimal_table(); - let tx = Transaction::new(&table); - - let data_file = DataFileBuilder::default() - .content(DataContentType::Data) - .file_path("test/1.parquet".to_string()) - .file_format(DataFileFormat::Parquet) - .file_size_in_bytes(100) - .record_count(10) - .partition_spec_id(table.metadata().default_partition_spec_id()) - .partition(Struct::from_iter([Some(Literal::long(100))])) - .build() - .unwrap(); - - // Test with invalid snapshot ID (table has no snapshot, so any ID should fail) - let action = tx + let data_file = make_data_file(&table, "test/1.parquet", 100); + let action = Transaction::new(&table) .row_delta() .validate_from_snapshot(99999) - .add_data_files(vec![data_file.clone()]); + .add_data_files(vec![data_file]); let result = Arc::new(action).commit(&table).await; match result { @@ -478,20 +350,18 @@ mod tests { #[tokio::test] async fn test_row_delta_empty_action() { let table = make_v2_minimal_table(); - let tx = Transaction::new(&table); - let action = tx.row_delta(); - - // Empty row delta should fail - assert!(Arc::new(action).commit(&table).await.is_err()); + assert!( + Arc::new(Transaction::new(&table).row_delta()) + .commit(&table) + .await + .is_err() + ); } #[tokio::test] async fn test_row_delta_incompatible_partition_value() { let table = make_v2_minimal_table(); - let tx = Transaction::new(&table); - - // Create file with incompatible partition value (string instead of long) - let data_file = DataFileBuilder::default() + let bad_file = DataFileBuilder::default() .content(DataContentType::Data) .file_path("test/bad.parquet".to_string()) .file_format(DataFileFormat::Parquet) @@ -501,10 +371,138 @@ mod tests { .partition(Struct::from_iter([Some(Literal::string("wrong"))])) .build() .unwrap(); + let action = Transaction::new(&table) + .row_delta() + .add_data_files(vec![bad_file]); + assert!(Arc::new(action).commit(&table).await.is_err()); + } - let action = tx.row_delta().add_data_files(vec![data_file]); + #[tokio::test] + async fn test_row_delta_add_delete_files_errors() { + let table = make_v2_minimal_table(); + let file = make_data_file(&table, "test/delete.parquet", 100); + let action = Transaction::new(&table) + .row_delta() + .add_delete_files(vec![file]); + let result = Arc::new(action).commit(&table).await; + match result { + Ok(_) => panic!("expected FeatureUnsupported"), + Err(e) => assert_eq!(e.kind(), crate::ErrorKind::FeatureUnsupported), + } + } - // Should fail validation - assert!(Arc::new(action).commit(&table).await.is_err()); + /// End-to-end CoW test: append two files, then remove one via RowDelta. + /// + /// Verifies: + /// - The removed file appears as DELETED with correct sequence numbers. + /// - The surviving file appears as EXISTING with correct sequence numbers. + /// - The new file appears as ADDED. + /// - The snapshot summary counts `deleted-data-files = 1`. + #[tokio::test] + async fn test_row_delta_cow_manifest_rewrite() { + let base_table = make_v2_minimal_table(); + + // --- S1: append file-A and file-B --- + let file_a = make_data_file(&base_table, "test/a.parquet", 100); + let file_b = make_data_file(&base_table, "test/b.parquet", 200); + + let action1 = Transaction::new(&base_table) + .fast_append() + .add_data_files(vec![file_a.clone(), file_b.clone()]); + let mut commit1 = Arc::new(action1).commit(&base_table).await.unwrap(); + let updates1 = commit1.take_updates(); + + let snapshot_s1 = if let TableUpdate::AddSnapshot { snapshot } = updates1.into_iter().next().unwrap() { + snapshot + } else { + panic!("expected AddSnapshot"); + }; + + let table_s1 = table_with_snapshot(&base_table, snapshot_s1).await; + + // --- S2: remove file-A (CoW), add file-C --- + let file_c = make_data_file(&table_s1, "test/c.parquet", 300); + let action2 = Transaction::new(&table_s1) + .row_delta() + .remove_data_files(vec![file_a.clone()]) + .add_data_files(vec![file_c.clone()]); + let mut commit2 = Arc::new(action2).commit(&table_s1).await.unwrap(); + let updates2 = commit2.take_updates(); + + let snapshot_s2 = if let TableUpdate::AddSnapshot { ref snapshot } = updates2[0] { + snapshot + } else { + panic!("expected AddSnapshot"); + }; + + assert_eq!( + snapshot_s2.summary().operation, + crate::spec::Operation::Overwrite + ); + + // Verify snapshot summary metrics + let props = &snapshot_s2.summary().additional_properties; + assert_eq!( + props.get("deleted-data-files").map(String::as_str), + Some("1"), + "summary should count 1 deleted file" + ); + + // Scan all manifest entries in S2 + let manifest_list = snapshot_s2 + .load_manifest_list(table_s1.file_io(), table_s1.metadata()) + .await + .unwrap(); + + let mut found_deleted_a = false; + let mut found_existing_b = false; + let mut found_added_c = false; + + for manifest_file in manifest_list.entries() { + let manifest = manifest_file + .load_manifest(table_s1.file_io()) + .await + .unwrap(); + for entry in manifest.entries() { + match entry.data_file().file_path() { + "test/a.parquet" => { + assert_eq!( + entry.status(), + ManifestStatus::Deleted, + "file-A must be DELETED" + ); + assert!( + entry.sequence_number().is_some(), + "DELETED entry must have sequence number" + ); + assert!( + entry.file_sequence_number.is_some(), + "DELETED entry must have file sequence number" + ); + found_deleted_a = true; + } + "test/b.parquet" => { + assert_eq!( + entry.status(), + ManifestStatus::Existing, + "file-B must be EXISTING" + ); + assert!( + entry.sequence_number().is_some(), + "EXISTING entry must have sequence number" + ); + found_existing_b = true; + } + "test/c.parquet" => { + found_added_c = true; + } + other => panic!("unexpected file in S2 manifests: {other}"), + } + } + } + + assert!(found_deleted_a, "file-A should have a DELETED entry in S2"); + assert!(found_existing_b, "file-B should have an EXISTING entry in S2"); + assert!(found_added_c, "file-C should have an ADDED entry in S2"); } } diff --git a/crates/iceberg/src/transaction/snapshot.rs b/crates/iceberg/src/transaction/snapshot.rs index cd9415ec2f..b905bf7bf7 100644 --- a/crates/iceberg/src/transaction/snapshot.rs +++ b/crates/iceberg/src/transaction/snapshot.rs @@ -62,10 +62,6 @@ const META_ROOT_PATH: &str = "metadata"; /// 3. **Delete Entry Processing**: The `delete_entries()` method is intended for future delete /// operations to specify which manifest entries should be marked as deleted. pub(crate) trait SnapshotProduceOperation: Send + Sync { - /// Returns the operation type that will be recorded in the snapshot summary. - /// - /// This determines what kind of operation is being performed (e.g., `Append`, `Overwrite`), - /// which is stored in the snapshot metadata for tracking and auditing purposes. fn operation(&self) -> Operation; /// Returns manifest entries that should be marked as deleted in the new snapshot. @@ -75,18 +71,29 @@ pub(crate) trait SnapshotProduceOperation: Send + Sync { snapshot_produce: &SnapshotProducer, ) -> impl Future>> + Send; - /// Returns existing manifest files that should be included in the new snapshot. - /// - /// This method determines which manifest files from the current snapshot should be - /// carried forward to the new snapshot. The selection depends on the operation type: + /// Returns existing manifest files to carry forward (or rewrite) into the new snapshot. /// - /// - **Append operations**: Typically include all existing manifests - /// - **Overwrite operations**: May exclude manifests for partitions being overwritten - /// - **Delete operations**: May exclude manifests for partitions being deleted + /// Implementations that need to delete specific files within a manifest should rewrite that + /// manifest (DELETED + EXISTING entries) and return the rewritten `ManifestFile` here. + /// `&mut SnapshotProducer` is provided so that implementations can call + /// `snapshot_produce.new_manifest_writer()` to produce the rewritten manifest. fn existing_manifest( &self, - snapshot_produce: &SnapshotProducer<'_>, + snapshot_produce: &mut SnapshotProducer<'_>, ) -> impl Future>> + Send; + + /// Data files being removed in this operation (used for snapshot summary metrics). + fn removed_data_files(&self) -> &[DataFile] { + &[] + } + + /// Whether this Overwrite replaces the entire table content. When true, + /// `truncate_table_summary` sets `deleted-data-files` to the previous total. + /// Row-level operations (RowDelta) return false; full-table rewrites (future + /// OverwriteFiles / ReplacePartitions) return true. + fn is_truncate_full_table(&self) -> bool { + false + } } pub(crate) struct DefaultManifestProcess; @@ -242,7 +249,7 @@ impl<'a> SnapshotProducer<'a> { snapshot_id } - fn new_manifest_writer(&mut self, content: ManifestContentType) -> Result { + pub(crate) fn new_manifest_writer(&mut self, content: ManifestContentType) -> Result { let new_manifest_path = format!( "{}/{}/{}-m{}.{}", self.table.metadata().location(), @@ -338,8 +345,11 @@ impl<'a> SnapshotProducer<'a> { writer.write_manifest_file().await } - // Write manifest file for deleted data files and return the ManifestFile for ManifestList. - async fn write_delete_manifest( + // Write a data manifest containing DELETED-status entries and return the ManifestFile. + // Note: this is NOT an Iceberg "delete manifest" (content=Deletes for MoR delete files). + // It is a data manifest (content=Data) whose entries carry ManifestStatus::Deleted to + // record which data files were removed in Copy-on-Write mode. + async fn write_manifest_with_deleted_entries( &mut self, delete_entries: Vec, ) -> Result { @@ -394,7 +404,7 @@ impl<'a> SnapshotProducer<'a> { // Process delete entries. if has_delete_entries { - let delete_manifest = self.write_delete_manifest(delete_entries).await?; + let delete_manifest = self.write_manifest_with_deleted_entries(delete_entries).await?; manifest_files.push(delete_manifest); } @@ -433,6 +443,14 @@ impl<'a> SnapshotProducer<'a> { ); } + for data_file in snapshot_produce_operation.removed_data_files() { + summary_collector.remove_file( + data_file, + table_metadata.current_schema().clone(), + table_metadata.default_partition_spec().clone(), + ); + } + let previous_snapshot = table_metadata.current_snapshot(); let mut additional_properties = summary_collector.build(); @@ -446,7 +464,7 @@ impl<'a> SnapshotProducer<'a> { update_snapshot_summaries( summary, previous_snapshot.map(|s| s.summary()), - snapshot_produce_operation.operation() == Operation::Overwrite, + snapshot_produce_operation.is_truncate_full_table(), ) } From 4ff9da5cd47b181a8e798f534c4b49efcaf6f127 Mon Sep 17 00:00:00 2001 From: Raghvendra Singh Date: Fri, 19 Jun 2026 21:20:22 +0530 Subject: [PATCH 06/16] feat(delete-vector): write/read V3 deletion-vector-v1 Puffin blobs Implements DeleteVector::to_puffin_blob / from_puffin_blob for the Iceberg deletion-vector-v1 Puffin blob format: 4-byte BE length, magic 0xD1D33964, portable 64-bit RoaringTreemap, 4-byte BE CRC32. Adds the crc32fast dependency. Tests: self serialize<->deserialize round-trip; pyiceberg-portable layout validation (Spark/Iceberg-Java byte compatibility); full Puffin-file round-trip via PuffinWriter/PuffinReader. Serializer design referenced from risingwavelabs/iceberg-rust #113. Toward finishing RowDelta merge-on-read DV-write (PR #2203). Co-Authored-By: Claude Opus 4.8 (1M context) Signed-off-by: Raghvendra Singh --- Cargo.lock | 1 + Cargo.toml | 1 + crates/iceberg/Cargo.toml | 1 + crates/iceberg/src/delete_vector.rs | 282 ++++++++++++++++++++++++++++ 4 files changed, 285 insertions(+) diff --git a/Cargo.lock b/Cargo.lock index 0a2f0a8206..062c9afac7 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -3762,6 +3762,7 @@ dependencies = [ "bimap", "bytes", "chrono", + "crc32fast", "derive_builder", "expect-test", "fastnum", diff --git a/Cargo.toml b/Cargo.toml index f11112109a..a7fa05af70 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -126,6 +126,7 @@ rand = "0.9.3" regex = "1.11.3" reqwest = { version = "0.12.12", default-features = false, features = ["json"] } roaring = { version = "0.11" } +crc32fast = "1.5" rstest = "0.26" serde = { version = "1.0.219", features = ["rc"] } serde_bytes = "0.11.17" diff --git a/crates/iceberg/Cargo.toml b/crates/iceberg/Cargo.toml index 9353a31842..a0af5dbd6a 100644 --- a/crates/iceberg/Cargo.toml +++ b/crates/iceberg/Cargo.toml @@ -52,6 +52,7 @@ base64 = { workspace = true } bimap = { workspace = true } bytes = { workspace = true } chrono = { workspace = true } +crc32fast = { workspace = true } derive_builder = { workspace = true } expect-test = { workspace = true } fastnum = { workspace = true } diff --git a/crates/iceberg/src/delete_vector.rs b/crates/iceberg/src/delete_vector.rs index df8a10193c..e5891dfabb 100644 --- a/crates/iceberg/src/delete_vector.rs +++ b/crates/iceberg/src/delete_vector.rs @@ -15,14 +15,28 @@ // specific language governing permissions and limitations // under the License. +use std::collections::HashMap; +use std::io::Cursor; use std::ops::BitOrAssign; +use crc32fast::Hasher; use roaring::RoaringTreemap; use roaring::bitmap::Iter; use roaring::treemap::BitmapIter; +use crate::puffin::{Blob, DELETION_VECTOR_V1}; use crate::{Error, ErrorKind, Result}; +/// Iceberg `deletion-vector-v1` Puffin blob magic bytes (Iceberg Puffin spec; +/// ported from risingwavelabs/iceberg-rust #113 — design reference only). +const DELETION_VECTOR_MAGIC_BYTES: [u8; 4] = [0xD1, 0xD3, 0x39, 0x64]; +/// Minimum blob size: u32 length (4) + magic (4) + u32 crc (4). +const MIN_SERIALIZED_DELETION_VECTOR_BLOB: usize = 12; +/// Puffin blob property: deletion vector cardinality (number of deleted positions). +pub(crate) const DELETION_VECTOR_PROPERTY_CARDINALITY: &str = "cardinality"; +/// Puffin blob property: referenced data file path the DV applies to. +pub(crate) const DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE: &str = "referenced-data-file"; + #[derive(Debug, Default)] pub struct DeleteVector { inner: RoaringTreemap, @@ -68,6 +82,148 @@ impl DeleteVector { pub fn len(&self) -> u64 { self.inner.len() } + + /// Returns `true` if there are no deleted positions in this vector. + pub fn is_empty(&self) -> bool { + self.inner.is_empty() + } + + /// Serialize this delete vector into an Iceberg V3 `deletion-vector-v1` Puffin blob. + /// + /// Blob layout (Iceberg Puffin spec): `length(u32 BE = magic + bitmap) ‖ magic ‖ + /// portable 64-bit RoaringTreemap ‖ crc32(u32 BE over magic + bitmap)`. + /// `properties` must contain `cardinality` + `referenced-data-file`. + /// Ported from risingwavelabs/iceberg-rust #113 (design reference only). + pub fn to_puffin_blob(&self, properties: HashMap) -> Result { + Self::check_properties(&properties)?; + + let serialized_bitmap_size = self.inner.serialized_size(); + let combined_length = (DELETION_VECTOR_MAGIC_BYTES.len() + serialized_bitmap_size) as u32; + let mut data = Vec::with_capacity( + std::mem::size_of_val(&combined_length) + + DELETION_VECTOR_MAGIC_BYTES.len() + + serialized_bitmap_size + + 4, + ); + + data.extend_from_slice(&combined_length.to_be_bytes()); + data.extend_from_slice(&DELETION_VECTOR_MAGIC_BYTES); + + let bitmap_start = data.len(); + data.resize(bitmap_start + serialized_bitmap_size, 0); + { + let mut cursor = Cursor::new(&mut data[bitmap_start..]); + self.inner.serialize_into(&mut cursor).map_err(|err| { + Error::new( + ErrorKind::Unexpected, + "failed to serialize deletion vector bitmap".to_string(), + ) + .with_source(err) + })?; + } + + let mut hasher = Hasher::new(); + hasher.update(&data[4..]); + let crc = hasher.finalize(); + data.extend_from_slice(&crc.to_be_bytes()); + + Ok(Blob::builder() + .r#type(DELETION_VECTOR_V1.to_string()) + .fields(vec![]) + .snapshot_id(-1) + .sequence_number(-1) + .data(data) + .properties(properties) + .build()) + } + + /// Deserialize a delete vector from an Iceberg `deletion-vector-v1` Puffin blob. + pub fn from_puffin_blob(blob: Blob) -> Result { + if blob.blob_type() != DELETION_VECTOR_V1 { + return Err(Error::new( + ErrorKind::DataInvalid, + format!("unsupported puffin blob type: {}", blob.blob_type()), + )); + } + + let data = blob.data(); + if data.len() < MIN_SERIALIZED_DELETION_VECTOR_BLOB { + return Err(Error::new( + ErrorKind::DataInvalid, + "serialized deletion vector blob too small".to_string(), + )); + } + + let magic = &data[4..8]; + if magic != DELETION_VECTOR_MAGIC_BYTES { + return Err(Error::new( + ErrorKind::DataInvalid, + "invalid deletion vector magic bytes".to_string(), + )); + } + + let combined_length = u32::from_be_bytes([data[0], data[1], data[2], data[3]]); + let expected_len = std::mem::size_of_val(&combined_length) + combined_length as usize + 4; + if expected_len != data.len() { + return Err(Error::new( + ErrorKind::DataInvalid, + format!( + "serialized deletion vector length mismatch: expected {expected_len}, actual {}", + data.len() + ), + )); + } + + let bitmap_end = data.len() - 4; + let bitmap_data = &data[8..bitmap_end]; + + let mut hasher = Hasher::new(); + hasher.update(&data[4..bitmap_end]); + let expected_crc = hasher.finalize(); + let stored_crc = u32::from_be_bytes([ + data[data.len() - 4], + data[data.len() - 3], + data[data.len() - 2], + data[data.len() - 1], + ]); + if expected_crc != stored_crc { + return Err(Error::new( + ErrorKind::DataInvalid, + format!("deletion vector crc mismatch: expected {expected_crc}, got {stored_crc}"), + )); + } + + let bitmap = + RoaringTreemap::deserialize_from(&mut Cursor::new(bitmap_data)).map_err(|err| { + Error::new( + ErrorKind::DataInvalid, + "failed to deserialize deletion vector bitmap".to_string(), + ) + .with_source(err) + })?; + + Ok(DeleteVector::new(bitmap)) + } + + fn check_properties(properties: &HashMap) -> Result<()> { + if !properties.contains_key(DELETION_VECTOR_PROPERTY_CARDINALITY) { + return Err(Error::new( + ErrorKind::DataInvalid, + format!( + "deletion vector blob missing required property: {DELETION_VECTOR_PROPERTY_CARDINALITY}" + ), + )); + } + if !properties.contains_key(DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE) { + return Err(Error::new( + ErrorKind::DataInvalid, + format!( + "deletion vector blob missing required property: {DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE}" + ), + )); + } + Ok(()) + } } // Ideally, we'd just wrap `roaring::RoaringTreemap`'s iterator, `roaring::treemap::Iter` here. @@ -198,4 +354,130 @@ mod tests { let res = dv.insert_positions(&positions); assert!(res.is_err()); } + + fn dv_props() -> HashMap { + HashMap::from([ + ( + DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), + "0".to_string(), + ), + ( + DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), + "s3://bucket/data/f.parquet".to_string(), + ), + ]) + } + + /// Self round-trip: serialize → Puffin blob → deserialize recovers the positions, + /// validating the frame (length, magic, crc) and serialize/deserialize symmetry. + #[test] + fn test_dv_puffin_blob_roundtrip() { + let positions = [1u64, 5, 42, 100, 1 << 33, (1u64 << 33) + 7]; + let mut dv = DeleteVector::default(); + for p in positions { + dv.insert(p); + } + let blob = dv.to_puffin_blob(dv_props()).unwrap(); + assert_eq!(blob.blob_type(), DELETION_VECTOR_V1); + + let restored = DeleteVector::from_puffin_blob(blob).unwrap(); + let mut got: Vec = restored.iter().collect(); + got.sort(); + assert_eq!(got, positions.to_vec()); + } + + /// Spark-compatibility proxy: parse the serialized bitmap with the EXACT algorithm + /// pyiceberg's `_deserialize_bitmap` uses — `[u64 LE bucket count]` then per bucket + /// `[u32 LE high-key + 32-bit portable RoaringBitmap]`. If this recovers the + /// positions, the bytes are Iceberg/Spark portable (no Spark needed for the signal). + #[test] + fn test_dv_blob_is_iceberg_portable() { + use std::io::Read; + + use roaring::RoaringBitmap; + + let positions = [3u64, 7, 100, (1u64 << 33) + 5]; + let mut dv = DeleteVector::default(); + for p in positions { + dv.insert(p); + } + let blob = dv.to_puffin_blob(dv_props()).unwrap(); + let data = blob.data(); + + // Frame (certain): [u32 BE len][magic][bitmap][u32 BE crc] + assert_eq!(&data[4..8], &DELETION_VECTOR_MAGIC_BYTES); + let bitmap = &data[8..data.len() - 4]; + + // pyiceberg portable parse + let mut cur = Cursor::new(bitmap); + let mut count_buf = [0u8; 8]; + cur.read_exact(&mut count_buf).unwrap(); + let n_buckets = u64::from_le_bytes(count_buf); + + let mut recovered: Vec = Vec::new(); + for _ in 0..n_buckets { + let mut key_buf = [0u8; 4]; + cur.read_exact(&mut key_buf).unwrap(); + let hi = u32::from_le_bytes(key_buf) as u64; + let bm = RoaringBitmap::deserialize_from(&mut cur).unwrap(); + for lo in bm.iter() { + recovered.push((hi << 32) | u64::from(lo)); + } + } + recovered.sort(); + assert_eq!( + recovered, + positions.to_vec(), + "serialized bitmap is NOT Iceberg-portable — roaring serialize_into header \ + differs from pyiceberg layout; switch to hand-rolled portable framing" + ); + } + + /// Piece 2 — full Puffin-FILE round-trip in Rust: write a DV blob to a real + /// Puffin file via `PuffinWriter`, read it back via `PuffinReader`, and recover + /// the deleted positions. Proves the Puffin file framing, not just the blob bytes. + #[tokio::test] + async fn test_dv_puffin_file_roundtrip() { + use tempfile::TempDir; + + use crate::io::FileIO; + use crate::puffin::{CompressionCodec, PuffinReader, PuffinWriter}; + + let positions = [2u64, 9, 256, (1u64 << 33) + 11]; + let mut dv = DeleteVector::default(); + for p in positions { + dv.insert(p); + } + assert!(!dv.is_empty()); + + let mut props = dv_props(); + props.insert( + DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), + dv.len().to_string(), + ); + let blob = dv.to_puffin_blob(props).unwrap(); + + let tmp = TempDir::new().unwrap(); + let path_buf = tmp.path().join("dv.puffin"); + let path = path_buf.to_str().unwrap(); + + let file_io = FileIO::new_with_fs(); + let output = file_io.new_output(path).unwrap(); + let mut writer = PuffinWriter::new(&output, HashMap::new(), false) + .await + .unwrap(); + writer.add(blob, CompressionCodec::None).await.unwrap(); + writer.close().await.unwrap(); + + let input = output.to_input_file(); + let reader = PuffinReader::new(input); + let meta = reader.file_metadata().await.unwrap().clone(); + assert_eq!(meta.blobs.len(), 1); + let read_blob = reader.blob(meta.blobs.first().unwrap()).await.unwrap(); + + let restored = DeleteVector::from_puffin_blob(read_blob).unwrap(); + let mut got: Vec = restored.iter().collect(); + got.sort(); + assert_eq!(got, positions.to_vec()); + } } From 9bbae4f3adae139b6b26f98d74d63d1ce2c42733 Mon Sep 17 00:00:00 2001 From: Raghvendra Singh Date: Fri, 19 Jun 2026 21:31:27 +0530 Subject: [PATCH 07/16] feat(row-delta): implement add_delete_files MoR commit (content=Deletes manifest) SnapshotProducer now carries added_delete_files and writes a separate content=Deletes manifest (build_v2_deletes / build_v3_deletes). RowDeltaAction.add_delete_files commits MoR delete files (position/equality, incl. V3 deletion vectors) instead of returning FeatureUnsupported; operation() returns Delete (only deletes) or Overwrite (with data files) per Java BaseRowDelta semantics. Replaces the stub-error test with test_row_delta_add_delete_files_mor (commits a position-delete file; asserts Operation::Delete + a PositionDeletes manifest entry). All 45 transaction tests pass (fast_append / overwrite / CoW unregressed). Toward finishing RowDelta merge-on-read DV-write (PR #2203). Co-Authored-By: Claude Opus 4.8 (1M context) Signed-off-by: Raghvendra Singh --- crates/iceberg/src/transaction/row_delta.rs | 148 ++++++++++++++------ crates/iceberg/src/transaction/snapshot.rs | 46 ++++++ 2 files changed, 154 insertions(+), 40 deletions(-) diff --git a/crates/iceberg/src/transaction/row_delta.rs b/crates/iceberg/src/transaction/row_delta.rs index 7ecc41066c..65e1c6b3fe 100644 --- a/crates/iceberg/src/transaction/row_delta.rs +++ b/crates/iceberg/src/transaction/row_delta.rs @@ -35,7 +35,7 @@ use crate::transaction::{ActionCommit, TransactionAction}; pub struct RowDeltaAction { added_data_files: Vec, removed_data_files: Vec, - /// Reserved for future Merge-on-Read support; calling `add_delete_files` currently errors. + /// MoR delete files (position/equality deletes, incl. V3 deletion vectors) to add. added_delete_files: Vec, commit_uuid: Option, snapshot_properties: HashMap, @@ -68,10 +68,8 @@ impl RowDeltaAction { self } - /// Reserved for future Merge-on-Read support — currently returns an error on commit. - /// - /// Once MoR is implemented, this will write position/equality delete files instead of - /// rewriting data files. + /// Add Merge-on-Read delete files (position/equality deletes, incl. V3 deletion + /// vectors). Written into a content=Deletes manifest at commit time. pub fn add_delete_files(mut self, delete_files: impl IntoIterator) -> Self { self.added_delete_files.extend(delete_files); self @@ -99,14 +97,6 @@ impl RowDeltaAction { #[async_trait] impl TransactionAction for RowDeltaAction { async fn commit(self: Arc, table: &Table) -> Result { - if !self.added_delete_files.is_empty() { - return Err(crate::Error::new( - crate::ErrorKind::FeatureUnsupported, - "add_delete_files is not yet implemented; Merge-on-Read support is pending. \ - Use remove_data_files for Copy-on-Write deletes instead.", - )); - } - if let Some(expected_snapshot_id) = self.starting_snapshot_id && table.metadata().current_snapshot_id() != Some(expected_snapshot_id) { @@ -120,7 +110,7 @@ impl TransactionAction for RowDeltaAction { )); } - let snapshot_producer = SnapshotProducer::new( + let mut snapshot_producer = SnapshotProducer::new( table, self.commit_uuid.unwrap_or_else(Uuid::now_v7), None, @@ -133,8 +123,14 @@ impl TransactionAction for RowDeltaAction { // already validated when originally committed. This matches Java's MergingSnapshotProducer. snapshot_producer.validate_added_data_files()?; + // MoR delete files (position/equality deletes, incl. V3 deletion vectors) are + // written into a separate content=Deletes manifest by the snapshot producer. + snapshot_producer.set_added_delete_files(self.added_delete_files.clone()); + let operation = RowDeltaOperation { removed_data_files: self.removed_data_files.clone(), + has_added_data_files: !self.added_data_files.is_empty(), + has_added_delete_files: !self.added_delete_files.is_empty(), }; snapshot_producer @@ -145,20 +141,26 @@ impl TransactionAction for RowDeltaAction { struct RowDeltaOperation { removed_data_files: Vec, + has_added_data_files: bool, + has_added_delete_files: bool, } impl SnapshotProduceOperation for RowDeltaOperation { - /// Operation type based on Java `BaseRowDelta.operation()`: - /// - No removes → `Append` - /// - Any removes → `Overwrite` - /// - /// `Operation::Delete` (MoR-only delete files, no data file changes) is deferred until - /// Merge-on-Read is wired up. + /// Operation type (mirrors Java `BaseRowDelta.operation()`): + /// - Any data files removed → `Overwrite` + /// - MoR delete files added → `Overwrite` if data files also added, else `Delete` + /// - Only data files added (or nothing) → `Append` fn operation(&self) -> Operation { - if self.removed_data_files.is_empty() { - Operation::Append - } else { + if !self.removed_data_files.is_empty() { Operation::Overwrite + } else if self.has_added_delete_files { + if self.has_added_data_files { + Operation::Overwrite + } else { + Operation::Delete + } + } else { + Operation::Append } } @@ -186,11 +188,10 @@ impl SnapshotProduceOperation for RowDeltaOperation { return Ok(vec![]); }; - let manifest_list = snapshot - .load_manifest_list( - snapshot_produce.table.file_io(), - &snapshot_produce.table.metadata_ref(), - ) + let manifest_list = snapshot_produce + .table + .manifest_list_reader(snapshot) + .load() .await?; let deleted_paths: HashSet<&str> = self @@ -377,18 +378,84 @@ mod tests { assert!(Arc::new(action).commit(&table).await.is_err()); } + /// MoR: adding a position-delete file via RowDelta commits a content=Deletes + /// manifest and an `Operation::Delete` snapshot (replaces the old "errors" test + /// now that `add_delete_files` is implemented). #[tokio::test] - async fn test_row_delta_add_delete_files_errors() { - let table = make_v2_minimal_table(); - let file = make_data_file(&table, "test/delete.parquet", 100); - let action = Transaction::new(&table) - .row_delta() - .add_delete_files(vec![file]); - let result = Arc::new(action).commit(&table).await; - match result { - Ok(_) => panic!("expected FeatureUnsupported"), - Err(e) => assert_eq!(e.kind(), crate::ErrorKind::FeatureUnsupported), + async fn test_row_delta_add_delete_files_mor() { + let base = make_v2_minimal_table(); + + // S1: append a data file. + let data_file = make_data_file(&base, "test/data.parquet", 100); + let mut c1 = Arc::new( + Transaction::new(&base) + .fast_append() + .add_data_files(vec![data_file]), + ) + .commit(&base) + .await + .unwrap(); + let snap_s1 = if let TableUpdate::AddSnapshot { snapshot } = + c1.take_updates().into_iter().next().unwrap() + { + snapshot + } else { + panic!("expected AddSnapshot"); + }; + let table_s1 = table_with_snapshot(&base, snap_s1).await; + + // S2: add a MoR position-delete file referencing the data file. + let delete_file = DataFileBuilder::default() + .content(DataContentType::PositionDeletes) + .file_path("test/pos-delete.parquet".to_string()) + .file_format(DataFileFormat::Parquet) + .file_size_in_bytes(50) + .record_count(3) + .partition_spec_id(table_s1.metadata().default_partition_spec_id()) + .partition(Struct::from_iter([Some(Literal::long(100))])) + .referenced_data_file(Some("test/data.parquet".to_string())) + .build() + .unwrap(); + let mut c2 = Arc::new( + Transaction::new(&table_s1) + .row_delta() + .add_delete_files(vec![delete_file]), + ) + .commit(&table_s1) + .await + .unwrap(); + let updates2 = c2.take_updates(); + let snap_s2 = if let TableUpdate::AddSnapshot { ref snapshot } = updates2[0] { + snapshot + } else { + panic!("expected AddSnapshot"); + }; + + // Only delete files added (no data adds/removes) → Operation::Delete. + assert_eq!(snap_s2.summary().operation, crate::spec::Operation::Delete); + + // A PositionDeletes entry must exist in the new snapshot's manifests. + let manifest_list = table_s1 + .manifest_list_reader(&std::sync::Arc::new(snap_s2.clone())) + .load() + .await + .unwrap(); + let mut found_position_delete = false; + for manifest_file in manifest_list.entries() { + let manifest = manifest_file + .load_manifest(table_s1.file_io()) + .await + .unwrap(); + for entry in manifest.entries() { + if entry.data_file().content_type() == DataContentType::PositionDeletes { + found_position_delete = true; + } + } } + assert!( + found_position_delete, + "expected a PositionDeletes entry in the RowDelta snapshot's manifests" + ); } /// End-to-end CoW test: append two files, then remove one via RowDelta. @@ -449,8 +516,9 @@ mod tests { ); // Scan all manifest entries in S2 - let manifest_list = snapshot_s2 - .load_manifest_list(table_s1.file_io(), table_s1.metadata()) + let manifest_list = table_s1 + .manifest_list_reader(&std::sync::Arc::new(snapshot_s2.clone())) + .load() .await .unwrap(); diff --git a/crates/iceberg/src/transaction/snapshot.rs b/crates/iceberg/src/transaction/snapshot.rs index b905bf7bf7..7bcd26d6c5 100644 --- a/crates/iceberg/src/transaction/snapshot.rs +++ b/crates/iceberg/src/transaction/snapshot.rs @@ -123,6 +123,9 @@ pub(crate) struct SnapshotProducer<'a> { key_metadata: Option>, snapshot_properties: HashMap, added_data_files: Vec, + // Added MoR delete files (position/equality deletes, incl. V3 deletion vectors). + // Written into a separate content=Deletes manifest by `write_added_delete_manifest`. + added_delete_files: Vec, // A counter used to generate unique manifest file names. // It starts from 0 and increments for each new manifest file. // Note: This counter is limited to the range of (0..u64::MAX). @@ -144,6 +147,7 @@ impl<'a> SnapshotProducer<'a> { key_metadata, snapshot_properties, added_data_files, + added_delete_files: vec![], manifest_counter: (0..), } } @@ -345,6 +349,41 @@ impl<'a> SnapshotProducer<'a> { writer.write_manifest_file().await } + /// Set the added MoR delete files to be written into a content=Deletes manifest. + pub(crate) fn set_added_delete_files(&mut self, delete_files: Vec) { + self.added_delete_files = delete_files; + } + + // Write a content=Deletes manifest for added MoR delete files (position/equality + // deletes, incl. V3 deletion vectors) and return the ManifestFile for the ManifestList. + async fn write_added_delete_manifest(&mut self) -> Result { + let added_delete_files = std::mem::take(&mut self.added_delete_files); + if added_delete_files.is_empty() { + return Err(Error::new( + ErrorKind::PreconditionFailed, + "No added delete files found when writing a delete manifest file", + )); + } + + let snapshot_id = self.snapshot_id; + let format_version = self.table.metadata().format_version(); + let manifest_entries = added_delete_files.into_iter().map(|delete_file| { + let builder = ManifestEntry::builder() + .status(crate::spec::ManifestStatus::Added) + .data_file(delete_file); + if format_version == FormatVersion::V1 { + builder.snapshot_id(snapshot_id).build() + } else { + builder.build() + } + }); + let mut writer = self.new_manifest_writer(ManifestContentType::Deletes)?; + for entry in manifest_entries { + writer.add_entry(entry)?; + } + writer.write_manifest_file().await + } + // Write a data manifest containing DELETED-status entries and return the ManifestFile. // Note: this is NOT an Iceberg "delete manifest" (content=Deletes for MoR delete files). // It is a data manifest (content=Data) whose entries carry ManifestStatus::Deleted to @@ -384,6 +423,7 @@ impl<'a> SnapshotProducer<'a> { // We should clean it up after all necessary actions are supported. // For details, please refer to https://github.com/apache/iceberg-rust/issues/1548 if self.added_data_files.is_empty() + && self.added_delete_files.is_empty() && self.snapshot_properties.is_empty() && !has_delete_entries { @@ -402,6 +442,12 @@ impl<'a> SnapshotProducer<'a> { manifest_files.push(added_manifest); } + // Process added MoR delete files (content=Deletes manifest, e.g. V3 deletion vectors). + if !self.added_delete_files.is_empty() { + let added_delete_manifest = self.write_added_delete_manifest().await?; + manifest_files.push(added_delete_manifest); + } + // Process delete entries. if has_delete_entries { let delete_manifest = self.write_manifest_with_deleted_entries(delete_entries).await?; From 9d98064ffabe7a36605f3dbb83ce77b5a85dbdd5 Mon Sep 17 00:00:00 2001 From: Raghvendra Singh Date: Fri, 19 Jun 2026 21:41:01 +0530 Subject: [PATCH 08/16] feat(delete-vector): glue DV -> Puffin file -> PositionDeletes DataFile Adds PuffinWriter::close_with_metadata() + PuffinWriteResult (file size + per-blob offsets/lengths). DeleteVector::write_to_puffin_file() writes a deletion-vector-v1 Puffin file and returns the V3 DataFile{content=PositionDeletes, referenced_data_file, content_offset, content_size_in_bytes} ready to feed RowDeltaAction::add_delete_files. Test test_dv_write_to_puffin_file (DV -> Puffin file -> DataFile, read back). Completes the end-to-end Rust MoR DV-write path: DeleteVector -> Puffin file -> DataFile -> RowDelta content=Deletes manifest commit. cf. RW deletion_vector_writer.rs. Co-Authored-By: Claude Opus 4.8 (1M context) Signed-off-by: Raghvendra Singh --- crates/iceberg/src/delete_vector.rs | 111 +++++++++++++++++++++++++++- crates/iceberg/src/puffin/mod.rs | 2 +- crates/iceberg/src/puffin/writer.rs | 25 ++++++- 3 files changed, 133 insertions(+), 5 deletions(-) diff --git a/crates/iceberg/src/delete_vector.rs b/crates/iceberg/src/delete_vector.rs index e5891dfabb..ec2f73f821 100644 --- a/crates/iceberg/src/delete_vector.rs +++ b/crates/iceberg/src/delete_vector.rs @@ -24,7 +24,9 @@ use roaring::RoaringTreemap; use roaring::bitmap::Iter; use roaring::treemap::BitmapIter; -use crate::puffin::{Blob, DELETION_VECTOR_V1}; +use crate::io::FileIO; +use crate::puffin::{Blob, CompressionCodec, DELETION_VECTOR_V1, PuffinWriter}; +use crate::spec::{DataContentType, DataFile, DataFileBuilder, DataFileFormat, Struct}; use crate::{Error, ErrorKind, Result}; /// Iceberg `deletion-vector-v1` Puffin blob magic bytes (Iceberg Puffin spec; @@ -224,6 +226,63 @@ impl DeleteVector { } Ok(()) } + + /// Write this delete vector to a `deletion-vector-v1` Puffin file at `location` and + /// return the V3 `DataFile{content=PositionDeletes, …}` to feed + /// `RowDeltaAction::add_delete_files`. Connects DV serialization → Puffin file → + /// delete-file metadata (offset/length) in one step (cf. RW `deletion_vector_writer.rs`). + pub async fn write_to_puffin_file( + &self, + file_io: &FileIO, + location: String, + referenced_data_file: String, + partition: Struct, + partition_spec_id: i32, + ) -> Result { + let cardinality = self.len(); + let properties = HashMap::from([ + ( + DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), + cardinality.to_string(), + ), + ( + DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), + referenced_data_file.clone(), + ), + ]); + let blob = self.to_puffin_blob(properties)?; + + let output_file = file_io.new_output(&location)?; + let mut writer = PuffinWriter::new(&output_file, HashMap::new(), false).await?; + writer.add(blob, CompressionCodec::None).await?; + let result = writer.close_with_metadata().await?; + let file_size = result.file_size_in_bytes; + let blob_metadata = result.blobs_metadata.first().ok_or_else(|| { + Error::new( + ErrorKind::Unexpected, + "puffin metadata is empty after writing deletion vector", + ) + })?; + + DataFileBuilder::default() + .content(DataContentType::PositionDeletes) + .file_path(location) + .file_format(DataFileFormat::Puffin) + .partition(partition) + .partition_spec_id(partition_spec_id) + .record_count(cardinality) + .file_size_in_bytes(file_size) + .referenced_data_file(Some(referenced_data_file)) + .content_offset(Some(blob_metadata.offset() as i64)) + .content_size_in_bytes(Some(blob_metadata.length() as i64)) + .build() + .map_err(|err| { + Error::new( + ErrorKind::DataInvalid, + format!("failed to build deletion vector data file: {err}"), + ) + }) + } } // Ideally, we'd just wrap `roaring::RoaringTreemap`'s iterator, `roaring::treemap::Iter` here. @@ -480,4 +539,54 @@ mod tests { got.sort(); assert_eq!(got, positions.to_vec()); } + + /// Piece 2.5 — glue: write a DV to a Puffin file and get back a V3 + /// `DataFile{PositionDeletes}` (offset/size/referenced-file filled), then read the + /// written file back and recover the positions. + #[tokio::test] + async fn test_dv_write_to_puffin_file() { + use tempfile::TempDir; + + use crate::puffin::PuffinReader; + + let positions = [4u64, 11, 512, (1u64 << 33) + 3]; + let mut dv = DeleteVector::default(); + for p in positions { + dv.insert(p); + } + + let tmp = TempDir::new().unwrap(); + let path_buf = tmp.path().join("dv2.puffin"); + let location = path_buf.to_str().unwrap().to_string(); + let file_io = FileIO::new_with_fs(); + + let data_file = dv + .write_to_puffin_file( + &file_io, + location.clone(), + "s3://bucket/data/x.parquet".to_string(), + Struct::empty(), + 0, + ) + .await + .unwrap(); + + assert_eq!(data_file.content_type(), DataContentType::PositionDeletes); + assert_eq!( + data_file.referenced_data_file().as_deref(), + Some("s3://bucket/data/x.parquet") + ); + assert!(data_file.content_offset().is_some()); + assert!(data_file.content_size_in_bytes().is_some()); + + // The written Puffin file reads back to the same positions. + let input = file_io.new_input(&location).unwrap(); + let reader = PuffinReader::new(input); + let meta = reader.file_metadata().await.unwrap().clone(); + let blob = reader.blob(meta.blobs.first().unwrap()).await.unwrap(); + let restored = DeleteVector::from_puffin_blob(blob).unwrap(); + let mut got: Vec = restored.iter().collect(); + got.sort(); + assert_eq!(got, positions.to_vec()); + } } diff --git a/crates/iceberg/src/puffin/mod.rs b/crates/iceberg/src/puffin/mod.rs index 0e054cac51..a660e25b59 100644 --- a/crates/iceberg/src/puffin/mod.rs +++ b/crates/iceberg/src/puffin/mod.rs @@ -51,7 +51,7 @@ mod reader; pub use reader::PuffinReader; mod writer; -pub use writer::PuffinWriter; +pub use writer::{PuffinWriteResult, PuffinWriter}; #[cfg(test)] mod test_utils; diff --git a/crates/iceberg/src/puffin/writer.rs b/crates/iceberg/src/puffin/writer.rs index 4af4970b04..d77c533be0 100644 --- a/crates/iceberg/src/puffin/writer.rs +++ b/crates/iceberg/src/puffin/writer.rs @@ -26,6 +26,16 @@ use crate::io::{FileWrite, OutputFile}; use crate::puffin::blob::Blob; use crate::puffin::metadata::{BlobMetadata, FileMetadata, Flag}; +/// Result of finalizing a Puffin file: total bytes written + per-blob metadata +/// (offsets/lengths), needed to build delete-file `DataFile`s for MoR commits. +#[derive(Debug, Clone)] +pub struct PuffinWriteResult { + /// Total size of the written Puffin file in bytes. + pub file_size_in_bytes: u64, + /// Metadata (incl. offset + length) for each blob written into the file. + pub blobs_metadata: Vec, +} + /// Puffin writer pub struct PuffinWriter { writer: Box, @@ -87,12 +97,21 @@ impl PuffinWriter { Ok(()) } - /// Finalizes the Puffin file - pub async fn close(mut self) -> Result<()> { + /// Finalizes the Puffin file. + pub async fn close(self) -> Result<()> { + self.close_with_metadata().await.map(|_| ()) + } + + /// Finalizes the Puffin file and returns the written size + per-blob metadata + /// (offsets/lengths) — needed to build a `DataFile` for an added MoR delete file. + pub async fn close_with_metadata(mut self) -> Result { self.write_header_once().await?; self.write_footer().await?; self.writer.close().await?; - Ok(()) + Ok(PuffinWriteResult { + file_size_in_bytes: self.num_bytes_written, + blobs_metadata: self.written_blobs_metadata, + }) } async fn write(&mut self, bytes: Bytes) -> Result<()> { From c1247a7829061bbf066c88fdea90765873250a06 Mon Sep 17 00:00:00 2001 From: Raghvendra Singh Date: Fri, 19 Jun 2026 22:01:54 +0530 Subject: [PATCH 09/16] feat(delete-vector): make module public + add real-data REST/S3 validation example MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Exposes 'pub mod delete_vector' (+ rustdoc on the public surface to satisfy #![deny(missing_docs)]) so downstream crates can use DeleteVector + write_to_puffin_file. Adds crates/catalog/rest/examples/pulse_dv_realdata.rs: connects to a REST catalog (Polaris), loads a real V3 table, writes a deletion vector via write_to_puffin_file, commits via RowDelta (content=Deletes manifest) — for cross-engine (Doris/Spark) validation before opening PR #2203. Compiles clean. Co-Authored-By: Claude Opus 4.8 (1M context) Signed-off-by: Raghvendra Singh --- .../rest/examples/pulse_dv_realdata.rs | 146 ++++++++++++++++++ crates/iceberg/src/delete_vector.rs | 11 ++ crates/iceberg/src/lib.rs | 2 +- 3 files changed, 158 insertions(+), 1 deletion(-) create mode 100644 crates/catalog/rest/examples/pulse_dv_realdata.rs diff --git a/crates/catalog/rest/examples/pulse_dv_realdata.rs b/crates/catalog/rest/examples/pulse_dv_realdata.rs new file mode 100644 index 0000000000..3b2b7cfb12 --- /dev/null +++ b/crates/catalog/rest/examples/pulse_dv_realdata.rs @@ -0,0 +1,146 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + +//! Real-data, cross-engine validation of V3 deletion-vector writes. +//! +//! Writes a `deletion-vector-v1` to a REAL Iceberg table via a REST catalog +//! (Polaris), so an INDEPENDENT engine (Doris / Spark / DuckDB) can read the +//! table back and confirm the deletes were applied. This is the gate before +//! opening the upstream RowDelta MoR DV-write PR (#2203). +//! +//! Prereqs: a clean V3 table with one data file and NO pre-existing deletion +//! vector (create it via Doris/Spark/DuckDB first), and a port-forward to +//! Polaris. Run from a host with S3 access for the warehouse bucket. +//! +//! ```bash +//! kubectl port-forward svc/polaris -n pulse-data 8181:8181 & +//! POLARIS_URI=http://localhost:8181/api/catalog \ +//! POLARIS_CREDENTIAL="$(kubectl get secret -n pulse-compute polaris-svc-spark \ +//! -o jsonpath='{.data.client-id}' | base64 -d):$(kubectl get secret -n \ +//! pulse-compute polaris-svc-spark -o jsonpath='{.data.client-secret}' | base64 -d)" \ +//! POLARIS_WAREHOUSE=bronze_dbnew \ +//! DV_NAMESPACE=zz_compactbench DV_TABLE=zz_rust_dv_test DV_DELETE_COUNT=3 \ +//! cargo run -p iceberg-catalog-rest --example pulse_dv_realdata +//! ``` +//! +//! Then verify in Doris: `SELECT COUNT(*) FROM bronze_dbnew.zz_compactbench.zz_rust_dv_test;` +//! should drop by `DV_DELETE_COUNT`. + +use std::collections::HashMap; + +use iceberg::delete_vector::DeleteVector; +use iceberg::spec::DataContentType; +use iceberg::transaction::{ApplyTransactionAction, Transaction}; +use iceberg::{Catalog, CatalogBuilder, TableIdent}; +use iceberg_catalog_rest::RestCatalogBuilder; +use uuid::Uuid; + +#[tokio::main] +async fn main() -> Result<(), Box> { + let uri = std::env::var("POLARIS_URI")?; + let credential = std::env::var("POLARIS_CREDENTIAL")?; + let warehouse = std::env::var("POLARIS_WAREHOUSE").unwrap_or_else(|_| "bronze_dbnew".into()); + let namespace = std::env::var("DV_NAMESPACE").unwrap_or_else(|_| "zz_compactbench".into()); + let table_name = std::env::var("DV_TABLE").unwrap_or_else(|_| "zz_rust_dv_test".into()); + let delete_count: u64 = std::env::var("DV_DELETE_COUNT") + .unwrap_or_else(|_| "3".into()) + .parse()?; + + // --- connect to Polaris (REST + OAuth2; S3 creds vended by the catalog) --- + let mut props = HashMap::new(); + props.insert("uri".to_string(), uri.clone()); + props.insert("warehouse".to_string(), warehouse); + props.insert("credential".to_string(), credential); + props.insert("scope".to_string(), "PRINCIPAL_ROLE:ALL".to_string()); + props.insert( + "oauth2-server-uri".to_string(), + format!("{}/v1/oauth/tokens", uri.trim_end_matches('/')), + ); + let catalog = RestCatalogBuilder::default().load("polaris", props).await?; + + let ident = TableIdent::from_strs([namespace.as_str(), table_name.as_str()])?; + let table = catalog.load_table(&ident).await?; + println!( + "loaded {ident:?} (format_version={:?})", + table.metadata().format_version() + ); + + // --- find a live Data file in the current snapshot --- + let snapshot = table + .metadata() + .current_snapshot() + .ok_or("table has no current snapshot")?; + let manifest_list = snapshot + .load_manifest_list(table.file_io(), table.metadata()) + .await?; + let mut chosen = None; + for manifest_file in manifest_list.entries() { + let manifest = manifest_file.load_manifest(table.file_io()).await?; + for entry in manifest.entries() { + if entry.is_alive() && entry.data_file().content_type() == DataContentType::Data { + chosen = Some(entry.data_file().clone()); + break; + } + } + if chosen.is_some() { + break; + } + } + let data_file = chosen.ok_or("no live data file found in the table")?; + let referenced = data_file.file_path().to_string(); + let total_rows = data_file.record_count(); + println!("target data file: {referenced} ({total_rows} rows)"); + if delete_count > total_rows { + return Err(format!("DV_DELETE_COUNT {delete_count} > rows in file {total_rows}").into()); + } + + // --- build a DV deleting the first `delete_count` positions --- + let mut dv = DeleteVector::default(); + for pos in 0..delete_count { + dv.insert(pos); + } + + // --- write the DV to a Puffin file and build the PositionDeletes DataFile --- + let dv_location = format!( + "{}/data/rust-dv-{}.puffin", + table.metadata().location().trim_end_matches('/'), + Uuid::now_v7() + ); + let dv_data_file = dv + .write_to_puffin_file( + table.file_io(), + dv_location.clone(), + referenced.clone(), + data_file.partition().clone(), + table.metadata().default_partition_spec_id(), + ) + .await?; + println!("wrote deletion vector puffin: {dv_location}"); + + // --- commit via RowDelta -> content=Deletes manifest + Operation::Delete --- + let tx = Transaction::new(&table); + let action = tx.row_delta().add_delete_files(vec![dv_data_file]); + let tx = action.apply(tx)?; + let updated = tx.commit(&catalog).await?; + + println!( + "COMMITTED. new snapshot_id={:?}. Now verify with an independent engine \ + (Doris/Spark): COUNT(*) should be (previous count - {delete_count}).", + updated.metadata().current_snapshot_id() + ); + Ok(()) +} diff --git a/crates/iceberg/src/delete_vector.rs b/crates/iceberg/src/delete_vector.rs index ec2f73f821..30d3d0e45d 100644 --- a/crates/iceberg/src/delete_vector.rs +++ b/crates/iceberg/src/delete_vector.rs @@ -15,6 +15,9 @@ // specific language governing permissions and limitations // under the License. +//! Iceberg V3 deletion vectors (`deletion-vector-v1`): a roaring-bitmap-backed set +//! of deleted row positions, serialized to and from Puffin blobs and files. + use std::collections::HashMap; use std::io::Cursor; use std::ops::BitOrAssign; @@ -39,12 +42,15 @@ pub(crate) const DELETION_VECTOR_PROPERTY_CARDINALITY: &str = "cardinality"; /// Puffin blob property: referenced data file path the DV applies to. pub(crate) const DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE: &str = "referenced-data-file"; +/// A set of deleted row positions backed by a 64-bit roaring bitmap — the in-memory +/// form of an Iceberg V3 `deletion-vector-v1`. #[derive(Debug, Default)] pub struct DeleteVector { inner: RoaringTreemap, } impl DeleteVector { + /// Creates a delete vector that wraps an existing roaring treemap of positions. #[allow(unused)] pub fn new(roaring_treemap: RoaringTreemap) -> DeleteVector { DeleteVector { @@ -52,11 +58,13 @@ impl DeleteVector { } } + /// Returns an iterator over the deleted row positions in ascending order. pub fn iter(&self) -> DeleteVectorIterator<'_> { let outer = self.inner.bitmaps(); DeleteVectorIterator { outer, inner: None } } + /// Marks row position `pos` as deleted; returns `true` if it was newly added. pub fn insert(&mut self, pos: u64) -> bool { self.inner.insert(pos) } @@ -80,6 +88,7 @@ impl DeleteVector { Ok(positions.len()) } + /// Returns the number of deleted row positions. #[allow(unused)] pub fn len(&self) -> u64 { self.inner.len() @@ -291,6 +300,7 @@ impl DeleteVector { // There is a PR open on roaring to add this (https://github.com/RoaringBitmap/roaring-rs/pull/314) // and if that gets merged then we can simplify `DeleteVectorIterator` here, refactoring `advance_to` // to just a wrapper around the underlying iterator's method. +/// Iterator over the deleted row positions of a [`DeleteVector`], in ascending order. pub struct DeleteVectorIterator<'a> { // NB: `BitMapIter` was only exposed publicly in https://github.com/RoaringBitmap/roaring-rs/pull/316 // which is not yet released. As a consequence our Cargo.toml temporarily uses a git reference for @@ -328,6 +338,7 @@ impl Iterator for DeleteVectorIterator<'_> { } impl DeleteVectorIterator<'_> { + /// Advances the iterator so the next yielded position is `>= pos`. pub fn advance_to(&mut self, pos: u64) { let hi = (pos >> 32) as u32; let lo = pos as u32; diff --git a/crates/iceberg/src/lib.rs b/crates/iceberg/src/lib.rs index 4e346460f5..4fd02f79e7 100644 --- a/crates/iceberg/src/lib.rs +++ b/crates/iceberg/src/lib.rs @@ -98,7 +98,7 @@ pub mod encryption; pub mod test_utils; pub mod writer; -mod delete_vector; +pub mod delete_vector; pub mod metadata_columns; pub mod puffin; /// Utility functions and modules. From 299c832bcb079bb226572af6373705279762f92f Mon Sep 17 00:00:00 2001 From: Raghvendra Singh Date: Fri, 19 Jun 2026 23:32:51 +0530 Subject: [PATCH 10/16] test(delete-vector): wire S3 StorageFactory into the real-data DV example RestCatalog requires explicit StorageFactory injection (S3 storage moved to the iceberg-storage-opendal crate, #2207). Wire OpenDalResolvingStorageFactory into the pulse_dv_realdata example and dev-dep the crate. Verified end-to-end against a real V3 Iceberg table on S3 (Polaris REST catalog): the Rust harness wrote a deletion-vector-v1 and committed via RowDelta; Doris (independent engine) read COUNT(*) 10 -> 7 with positions 0,1,2 (ids 1,2,3) deleted. Co-Authored-By: Claude Opus 4.8 (1M context) Signed-off-by: Raghvendra Singh --- Cargo.lock | 1 + crates/catalog/rest/Cargo.toml | 1 + crates/catalog/rest/examples/pulse_dv_realdata.rs | 7 ++++++- 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/Cargo.lock b/Cargo.lock index 062c9afac7..25f2581da9 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -3876,6 +3876,7 @@ dependencies = [ "chrono", "http 1.4.0", "iceberg", + "iceberg-storage-opendal", "iceberg_test_utils", "itertools 0.13.0", "mockito", diff --git a/crates/catalog/rest/Cargo.toml b/crates/catalog/rest/Cargo.toml index e043c195ef..a4a91926a1 100644 --- a/crates/catalog/rest/Cargo.toml +++ b/crates/catalog/rest/Cargo.toml @@ -45,5 +45,6 @@ uuid = { workspace = true, features = ["v4"] } [dev-dependencies] iceberg_test_utils = { path = "../../test_utils", features = ["tests"] } +iceberg-storage-opendal = { workspace = true } mockito = { workspace = true } tokio = { workspace = true } diff --git a/crates/catalog/rest/examples/pulse_dv_realdata.rs b/crates/catalog/rest/examples/pulse_dv_realdata.rs index 3b2b7cfb12..cb017439e4 100644 --- a/crates/catalog/rest/examples/pulse_dv_realdata.rs +++ b/crates/catalog/rest/examples/pulse_dv_realdata.rs @@ -41,12 +41,14 @@ //! should drop by `DV_DELETE_COUNT`. use std::collections::HashMap; +use std::sync::Arc; use iceberg::delete_vector::DeleteVector; use iceberg::spec::DataContentType; use iceberg::transaction::{ApplyTransactionAction, Transaction}; use iceberg::{Catalog, CatalogBuilder, TableIdent}; use iceberg_catalog_rest::RestCatalogBuilder; +use iceberg_storage_opendal::OpenDalResolvingStorageFactory; use uuid::Uuid; #[tokio::main] @@ -70,7 +72,10 @@ async fn main() -> Result<(), Box> { "oauth2-server-uri".to_string(), format!("{}/v1/oauth/tokens", uri.trim_end_matches('/')), ); - let catalog = RestCatalogBuilder::default().load("polaris", props).await?; + let catalog = RestCatalogBuilder::default() + .with_storage_factory(Arc::new(OpenDalResolvingStorageFactory::new())) + .load("polaris", props) + .await?; let ident = TableIdent::from_strs([namespace.as_str(), table_name.as_str()])?; let table = catalog.load_table(&ident).await?; From c8ad5b59a8a4e985717824f791cba2a98034eab6 Mon Sep 17 00:00:00 2001 From: Raghvendra Singh Date: Sat, 20 Jun 2026 00:09:11 +0530 Subject: [PATCH 11/16] test(delete-vector): byte-parity with Apache Iceberg-Java golden DV payload Adds testdata/puffin/deletion-vector-v1-payload.bin (Java-produced deletion-vector-v1 payload for positions {1,3,5,7,9}, from apache/iceberg test resources via apache/iceberg-go's fixture) and a test asserting DeleteVector::to_puffin_blob produces byte-identical output. Proves our roaring serialization + length/magic/CRC framing match the Iceberg-Java reference exactly. Co-Authored-By: Claude Opus 4.8 (1M context) Signed-off-by: Raghvendra Singh --- crates/iceberg/src/delete_vector.rs | 32 ++++++++++++++++++ .../puffin/deletion-vector-v1-payload.bin | Bin 0 -> 50 bytes 2 files changed, 32 insertions(+) create mode 100644 crates/iceberg/testdata/puffin/deletion-vector-v1-payload.bin diff --git a/crates/iceberg/src/delete_vector.rs b/crates/iceberg/src/delete_vector.rs index 30d3d0e45d..78a17d7d8f 100644 --- a/crates/iceberg/src/delete_vector.rs +++ b/crates/iceberg/src/delete_vector.rs @@ -600,4 +600,36 @@ mod tests { got.sort(); assert_eq!(got, positions.to_vec()); } + + /// Cross-implementation byte-parity with Apache Iceberg-Java: the serialized + /// `deletion-vector-v1` payload for positions {1,3,5,7,9} must be byte-identical + /// to the Java-produced golden fixture (lifted from apache/iceberg test resources + /// `small-alternating-values-position-index.bin` via apache/iceberg-go). Proves our + /// roaring serialization + framing exactly match the Iceberg-Java reference. + #[test] + fn test_dv_payload_byte_identical_to_java_golden() { + let golden: &[u8] = include_bytes!(concat!( + env!("CARGO_MANIFEST_DIR"), + "/testdata/puffin/deletion-vector-v1-payload.bin" + )); + + let mut dv = DeleteVector::default(); + for p in [1u64, 3, 5, 7, 9] { + dv.insert(p); + } + let props = HashMap::from([ + (DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), "5".to_string()), + ( + DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), + "data/test.parquet".to_string(), + ), + ]); + let blob = dv.to_puffin_blob(props).unwrap(); + + assert_eq!( + blob.data(), + golden, + "DV payload must be byte-identical to the apache/iceberg Java golden fixture" + ); + } } diff --git a/crates/iceberg/testdata/puffin/deletion-vector-v1-payload.bin b/crates/iceberg/testdata/puffin/deletion-vector-v1-payload.bin new file mode 100644 index 0000000000000000000000000000000000000000..80829fae22c3f39f2d1b6e3bab0a4222ca13c433 GIT binary patch literal 50 rcmZQzV9>gF*)oNZ0RgNG7#JXY76t*JFe3vq11keN11H1g-wOKxf}#bH literal 0 HcmV?d00001 From 0a9766a01f1d96434cf815f0fdf1c7adc86d9d82 Mon Sep 17 00:00:00 2001 From: Raghvendra Singh Date: Sat, 20 Jun 2026 00:15:25 +0530 Subject: [PATCH 12/16] test(delete-vector): empty + boundary-position parity tests (vs iceberg-go) Mirrors apache/iceberg-go TestSerializeDVEmpty + TestSerializeDVLargePositions: empty DV round-trips; positions straddling the 2^31 (Java-signed) and 2^32 (roaring bucket) boundaries round-trip. 12 delete_vector tests now pass. Co-Authored-By: Claude Opus 4.8 (1M context) Signed-off-by: Raghvendra Singh --- crates/iceberg/src/delete_vector.rs | 40 +++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/crates/iceberg/src/delete_vector.rs b/crates/iceberg/src/delete_vector.rs index 78a17d7d8f..6fbaa07e82 100644 --- a/crates/iceberg/src/delete_vector.rs +++ b/crates/iceberg/src/delete_vector.rs @@ -632,4 +632,44 @@ mod tests { "DV payload must be byte-identical to the apache/iceberg Java golden fixture" ); } + + /// Empty deletion vector round-trips (mirrors iceberg-go `TestSerializeDVEmpty`). + #[test] + fn test_dv_empty_roundtrip() { + let dv = DeleteVector::default(); + let props = HashMap::from([ + (DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), "0".to_string()), + ( + DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), + "data/empty.parquet".to_string(), + ), + ]); + let blob = dv.to_puffin_blob(props).unwrap(); + let restored = DeleteVector::from_puffin_blob(blob).unwrap(); + assert!(restored.is_empty()); + assert_eq!(restored.len(), 0); + } + + /// Positions straddling the 2^31 (Java-signed) and 2^32 (roaring bucket) + /// boundaries round-trip (mirrors iceberg-go `TestSerializeDVLargePositions`). + #[test] + fn test_dv_boundary_positions_roundtrip() { + let positions = [100u64, 101, 2_147_483_747, 2_147_483_748, (1u64 << 32) | 42]; + let mut dv = DeleteVector::default(); + for p in positions { + dv.insert(p); + } + let props = HashMap::from([ + (DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), "5".to_string()), + ( + DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), + "data/boundary.parquet".to_string(), + ), + ]); + let blob = dv.to_puffin_blob(props).unwrap(); + let restored = DeleteVector::from_puffin_blob(blob).unwrap(); + let mut got: Vec = restored.iter().collect(); + got.sort(); + assert_eq!(got, positions.to_vec()); + } } From 041f9b6817a5ebaa654c7a7f759549f4d28d0ffd Mon Sep 17 00:00:00 2001 From: Raghvendra Singh Date: Sat, 20 Jun 2026 00:33:14 +0530 Subject: [PATCH 13/16] test(delete-vector): 2 more Java golden byte-parity vectors (empty, small+large) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From apache/iceberg core test resources: empty-position-index.bin + small-and-large-values-position-index.bin. Now 3 Java byte-identical DV-payload vectors (empty; alternating 1/3/5/7/9; small+large across two 16-bit roaring containers). 14 delete_vector tests pass. all-container-types fixture intentionally NOT byte-pinned: Java run-optimizes containers, roaring-rs does not — spec-valid but different bytes (round-trip still covered). Co-Authored-By: Claude Opus 4.8 (1M context) Signed-off-by: Raghvendra Singh --- crates/iceberg/src/delete_vector.rs | 52 ++++++++++++++++++ .../testdata/puffin/empty-position-index.bin | Bin 0 -> 20 bytes .../small-and-large-values-position-index.bin | Bin 0 -> 56 bytes 3 files changed, 52 insertions(+) create mode 100644 crates/iceberg/testdata/puffin/empty-position-index.bin create mode 100644 crates/iceberg/testdata/puffin/small-and-large-values-position-index.bin diff --git a/crates/iceberg/src/delete_vector.rs b/crates/iceberg/src/delete_vector.rs index 6fbaa07e82..7351e38d52 100644 --- a/crates/iceberg/src/delete_vector.rs +++ b/crates/iceberg/src/delete_vector.rs @@ -672,4 +672,56 @@ mod tests { got.sort(); assert_eq!(got, positions.to_vec()); } + + /// Byte-parity with Apache Iceberg-Java: the **empty** DV payload + /// (`empty-position-index.bin` from apache/iceberg test resources). + #[test] + fn test_dv_payload_byte_identical_to_java_empty() { + let golden: &[u8] = include_bytes!(concat!( + env!("CARGO_MANIFEST_DIR"), + "/testdata/puffin/empty-position-index.bin" + )); + let dv = DeleteVector::default(); + let props = HashMap::from([ + (DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), "0".to_string()), + ( + DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), + "data/test.parquet".to_string(), + ), + ]); + let blob = dv.to_puffin_blob(props).unwrap(); + assert_eq!( + blob.data(), + golden, + "empty DV payload must be byte-identical to the Java golden fixture" + ); + } + + /// Byte-parity with Apache Iceberg-Java: small + large positions spanning two + /// 16-bit roaring containers — {100, 101, INT_MAX+100, INT_MAX+101} per + /// `small-and-large-values-position-index.bin` from apache/iceberg test resources. + #[test] + fn test_dv_payload_byte_identical_to_java_small_and_large() { + let golden: &[u8] = include_bytes!(concat!( + env!("CARGO_MANIFEST_DIR"), + "/testdata/puffin/small-and-large-values-position-index.bin" + )); + let mut dv = DeleteVector::default(); + for p in [100u64, 101, 2_147_483_747, 2_147_483_748] { + dv.insert(p); + } + let props = HashMap::from([ + (DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), "4".to_string()), + ( + DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), + "data/test.parquet".to_string(), + ), + ]); + let blob = dv.to_puffin_blob(props).unwrap(); + assert_eq!( + blob.data(), + golden, + "small+large DV payload must be byte-identical to the Java golden fixture" + ); + } } diff --git a/crates/iceberg/testdata/puffin/empty-position-index.bin b/crates/iceberg/testdata/puffin/empty-position-index.bin new file mode 100644 index 0000000000000000000000000000000000000000..8bbc1265dc1dfbce43c8074e8f21fce1f8c8c8db GIT binary patch literal 20 WcmZQzVBooU*)oLz3ieBQ@BjcNUjumn literal 0 HcmV?d00001 diff --git a/crates/iceberg/testdata/puffin/small-and-large-values-position-index.bin b/crates/iceberg/testdata/puffin/small-and-large-values-position-index.bin new file mode 100644 index 0000000000000000000000000000000000000000..989dabf6ad53528a2ffe1a66240dde713653ce30 GIT binary patch literal 56 ucmZQzU@*9N*)oNZ0RgNG7#NtqT%c$JBZCBxEd#_U45 Date: Sat, 20 Jun 2026 00:54:05 +0530 Subject: [PATCH 14/16] style: rustfmt the DV-write changes (CI gate) Apache iceberg-rust CI gates on rustfmt + clippy; both now clean on the changed crates (iceberg, iceberg-catalog-rest). Co-Authored-By: Claude Opus 4.8 (1M context) Signed-off-by: Raghvendra Singh --- crates/iceberg/src/delete_vector.rs | 25 ++++++++++++--- crates/iceberg/src/transaction/row_delta.rs | 35 +++++++++++---------- crates/iceberg/src/transaction/snapshot.rs | 9 ++++-- 3 files changed, 45 insertions(+), 24 deletions(-) diff --git a/crates/iceberg/src/delete_vector.rs b/crates/iceberg/src/delete_vector.rs index 7351e38d52..1ad074a731 100644 --- a/crates/iceberg/src/delete_vector.rs +++ b/crates/iceberg/src/delete_vector.rs @@ -618,7 +618,10 @@ mod tests { dv.insert(p); } let props = HashMap::from([ - (DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), "5".to_string()), + ( + DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), + "5".to_string(), + ), ( DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), "data/test.parquet".to_string(), @@ -638,7 +641,10 @@ mod tests { fn test_dv_empty_roundtrip() { let dv = DeleteVector::default(); let props = HashMap::from([ - (DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), "0".to_string()), + ( + DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), + "0".to_string(), + ), ( DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), "data/empty.parquet".to_string(), @@ -660,7 +666,10 @@ mod tests { dv.insert(p); } let props = HashMap::from([ - (DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), "5".to_string()), + ( + DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), + "5".to_string(), + ), ( DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), "data/boundary.parquet".to_string(), @@ -683,7 +692,10 @@ mod tests { )); let dv = DeleteVector::default(); let props = HashMap::from([ - (DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), "0".to_string()), + ( + DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), + "0".to_string(), + ), ( DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), "data/test.parquet".to_string(), @@ -711,7 +723,10 @@ mod tests { dv.insert(p); } let props = HashMap::from([ - (DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), "4".to_string()), + ( + DELETION_VECTOR_PROPERTY_CARDINALITY.to_string(), + "4".to_string(), + ), ( DELETION_VECTOR_PROPERTY_REFERENCED_DATA_FILE.to_string(), "data/test.parquet".to_string(), diff --git a/crates/iceberg/src/transaction/row_delta.rs b/crates/iceberg/src/transaction/row_delta.rs index 65e1c6b3fe..0cc0503de7 100644 --- a/crates/iceberg/src/transaction/row_delta.rs +++ b/crates/iceberg/src/transaction/row_delta.rs @@ -222,8 +222,7 @@ impl SnapshotProduceOperation for RowDeltaOperation { // Rewrite: deleted files → DELETED (new snapshot_id, original seq nums preserved), // surviving files → EXISTING (all original fields preserved). - let mut writer = - snapshot_produce.new_manifest_writer(ManifestContentType::Data)?; + let mut writer = snapshot_produce.new_manifest_writer(ManifestContentType::Data)?; for entry in manifest.entries() { if deleted_paths.contains(entry.data_file().file_path()) { writer.add_delete_entry((**entry).clone())?; @@ -270,15 +269,13 @@ mod tests { /// Build a table that has `snapshot` as its current snapshot, backed by the same FileIO. async fn table_with_snapshot(base: &Table, snapshot: crate::spec::Snapshot) -> Table { - let updated_metadata = TableMetadataBuilder::new_from_metadata( - base.metadata_ref().as_ref().clone(), - None, - ) - .set_branch_snapshot(snapshot, MAIN_BRANCH) - .unwrap() - .build() - .unwrap() - .metadata; + let updated_metadata = + TableMetadataBuilder::new_from_metadata(base.metadata_ref().as_ref().clone(), None) + .set_branch_snapshot(snapshot, MAIN_BRANCH) + .unwrap() + .build() + .unwrap() + .metadata; Table::builder() .metadata(updated_metadata) @@ -479,11 +476,12 @@ mod tests { let mut commit1 = Arc::new(action1).commit(&base_table).await.unwrap(); let updates1 = commit1.take_updates(); - let snapshot_s1 = if let TableUpdate::AddSnapshot { snapshot } = updates1.into_iter().next().unwrap() { - snapshot - } else { - panic!("expected AddSnapshot"); - }; + let snapshot_s1 = + if let TableUpdate::AddSnapshot { snapshot } = updates1.into_iter().next().unwrap() { + snapshot + } else { + panic!("expected AddSnapshot"); + }; let table_s1 = table_with_snapshot(&base_table, snapshot_s1).await; @@ -570,7 +568,10 @@ mod tests { } assert!(found_deleted_a, "file-A should have a DELETED entry in S2"); - assert!(found_existing_b, "file-B should have an EXISTING entry in S2"); + assert!( + found_existing_b, + "file-B should have an EXISTING entry in S2" + ); assert!(found_added_c, "file-C should have an ADDED entry in S2"); } } diff --git a/crates/iceberg/src/transaction/snapshot.rs b/crates/iceberg/src/transaction/snapshot.rs index 7bcd26d6c5..f887a31e87 100644 --- a/crates/iceberg/src/transaction/snapshot.rs +++ b/crates/iceberg/src/transaction/snapshot.rs @@ -253,7 +253,10 @@ impl<'a> SnapshotProducer<'a> { snapshot_id } - pub(crate) fn new_manifest_writer(&mut self, content: ManifestContentType) -> Result { + pub(crate) fn new_manifest_writer( + &mut self, + content: ManifestContentType, + ) -> Result { let new_manifest_path = format!( "{}/{}/{}-m{}.{}", self.table.metadata().location(), @@ -450,7 +453,9 @@ impl<'a> SnapshotProducer<'a> { // Process delete entries. if has_delete_entries { - let delete_manifest = self.write_manifest_with_deleted_entries(delete_entries).await?; + let delete_manifest = self + .write_manifest_with_deleted_entries(delete_entries) + .await?; manifest_files.push(delete_manifest); } From 207aca3d074b39bd379aa8947b03f2f73c3809f3 Mon Sep 17 00:00:00 2001 From: Raghvendra Singh Date: Sat, 20 Jun 2026 17:04:29 +0530 Subject: [PATCH 15/16] fix(ci): adapt to current main + regenerate CI artifacts - adapt pulse_dv_realdata example to manifest_list_reader (load_manifest_list was removed from Snapshot in current main) - allowlist 'mor' (merge-on-read) in .typos.toml - regenerate crates/iceberg/public-api.txt and DEPENDENCIES.rust.tsv files Co-Authored-By: Claude Opus 4.8 (1M context) --- .typos.toml | 1 + Cargo.toml | 2 +- crates/catalog/rest/Cargo.toml | 2 +- crates/catalog/rest/DEPENDENCIES.rust.tsv | 713 ++++++----- .../rest/examples/pulse_dv_realdata.rs | 15 +- crates/examples/DEPENDENCIES.rust.tsv | 718 ++++++----- crates/iceberg/public-api.txt | 33 + .../playground/DEPENDENCIES.rust.tsv | 1075 +++++++++-------- 8 files changed, 1401 insertions(+), 1158 deletions(-) diff --git a/.typos.toml b/.typos.toml index e9fa0028f5..796e778861 100644 --- a/.typos.toml +++ b/.typos.toml @@ -21,6 +21,7 @@ extend-ignore-identifiers-re = ["^bimap$"] [default.extend-words] AGS = "AGS" ags = "ags" +mor = "mor" [files] extend-exclude = ["**/testdata", "CHANGELOG.md", "**/public-api.txt"] diff --git a/Cargo.toml b/Cargo.toml index a7fa05af70..271b2dbe54 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -73,6 +73,7 @@ bytes = "1.11" cfg-if = "1" chrono = "0.4.41" clap = { version = "4.5.48", features = ["derive", "cargo"] } +crc32fast = "1.5" dashmap = "6" datafusion = "53.1.0" datafusion-cli = "53.0.0" @@ -126,7 +127,6 @@ rand = "0.9.3" regex = "1.11.3" reqwest = { version = "0.12.12", default-features = false, features = ["json"] } roaring = { version = "0.11" } -crc32fast = "1.5" rstest = "0.26" serde = { version = "1.0.219", features = ["rc"] } serde_bytes = "0.11.17" diff --git a/crates/catalog/rest/Cargo.toml b/crates/catalog/rest/Cargo.toml index a4a91926a1..8fed46e42c 100644 --- a/crates/catalog/rest/Cargo.toml +++ b/crates/catalog/rest/Cargo.toml @@ -44,7 +44,7 @@ typed-builder = { workspace = true } uuid = { workspace = true, features = ["v4"] } [dev-dependencies] -iceberg_test_utils = { path = "../../test_utils", features = ["tests"] } iceberg-storage-opendal = { workspace = true } +iceberg_test_utils = { path = "../../test_utils", features = ["tests"] } mockito = { workspace = true } tokio = { workspace = true } diff --git a/crates/catalog/rest/DEPENDENCIES.rust.tsv b/crates/catalog/rest/DEPENDENCIES.rust.tsv index 801170e88c..2e7958872d 100644 --- a/crates/catalog/rest/DEPENDENCIES.rust.tsv +++ b/crates/catalog/rest/DEPENDENCIES.rust.tsv @@ -1,316 +1,397 @@ -crate 0BSD Apache-2.0 Apache-2.0 WITH LLVM-exception BSD-2-Clause BSD-3-Clause BSL-1.0 CC0-1.0 ISC LGPL-2.1-or-later MIT Unicode-3.0 Unlicense Zlib -adler2@2.0.1 X X X -aead@0.5.2 X X -aes@0.8.4 X X -aes-gcm@0.10.3 X X -ahash@0.8.12 X X -aho-corasick@1.1.4 X X -alloc-no-stdlib@2.0.4 X -alloc-stdlib@0.2.2 X -android_system_properties@0.1.5 X X -anyhow@1.0.102 X X -apache-avro@0.21.0 X -array-init@2.1.0 X X -arrow-arith@58.3.0 X -arrow-array@58.3.0 X X -arrow-buffer@58.3.0 X -arrow-cast@58.3.0 X -arrow-data@58.3.0 X -arrow-ipc@58.1.0 X -arrow-ord@58.3.0 X -arrow-schema@58.3.0 X -arrow-select@58.3.0 X -arrow-string@58.3.0 X -as-any@0.3.2 X X -async-lock@3.4.2 X X -async-trait@0.1.89 X X -atoi@2.0.0 X -atomic-waker@1.1.2 X X -autocfg@1.5.0 X X -backon@1.6.0 X -base64@0.22.1 X X -bigdecimal@0.4.10 X X -bimap@0.6.3 X X -bitflags@2.11.0 X X -block-buffer@0.10.4 X X 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+zmij@1.0.21 X +zstd@0.13.3 X +zstd-safe@7.2.4 X X +zstd-sys@2.0.16+zstd.1.5.7 X X diff --git a/crates/catalog/rest/examples/pulse_dv_realdata.rs b/crates/catalog/rest/examples/pulse_dv_realdata.rs index cb017439e4..3ed6fb3054 100644 --- a/crates/catalog/rest/examples/pulse_dv_realdata.rs +++ b/crates/catalog/rest/examples/pulse_dv_realdata.rs @@ -89,9 +89,7 @@ async fn main() -> Result<(), Box> { .metadata() .current_snapshot() .ok_or("table has no current snapshot")?; - let manifest_list = snapshot - .load_manifest_list(table.file_io(), table.metadata()) - .await?; + let manifest_list = table.manifest_list_reader(snapshot).load().await?; let mut chosen = None; for manifest_file in manifest_list.entries() { let manifest = manifest_file.load_manifest(table.file_io()).await?; @@ -125,6 +123,7 @@ async fn main() -> Result<(), Box> { table.metadata().location().trim_end_matches('/'), Uuid::now_v7() ); + let t_write_start = std::time::Instant::now(); let dv_data_file = dv .write_to_puffin_file( table.file_io(), @@ -134,13 +133,21 @@ async fn main() -> Result<(), Box> { table.metadata().default_partition_spec_id(), ) .await?; - println!("wrote deletion vector puffin: {dv_location}"); + let t_write = t_write_start.elapsed(); // --- commit via RowDelta -> content=Deletes manifest + Operation::Delete --- + let t_commit_start = std::time::Instant::now(); let tx = Transaction::new(&table); let action = tx.row_delta().add_delete_files(vec![dv_data_file]); let tx = action.apply(tx)?; let updated = tx.commit(&catalog).await?; + let t_commit = t_commit_start.elapsed(); + println!( + "BENCH K={delete_count} write_to_puffin={:.3}s commit={:.3}s total={:.3}s", + t_write.as_secs_f64(), + t_commit.as_secs_f64(), + (t_write + t_commit).as_secs_f64() + ); println!( "COMMITTED. new snapshot_id={:?}. Now verify with an independent engine \ diff --git a/crates/examples/DEPENDENCIES.rust.tsv b/crates/examples/DEPENDENCIES.rust.tsv index a6c67ad6cc..5ab17eb6f9 100644 --- a/crates/examples/DEPENDENCIES.rust.tsv +++ b/crates/examples/DEPENDENCIES.rust.tsv @@ -1,319 +1,399 @@ -crate 0BSD Apache-2.0 Apache-2.0 WITH LLVM-exception BSD-2-Clause BSD-3-Clause BSL-1.0 CC0-1.0 ISC LGPL-2.1-or-later MIT Unicode-3.0 Unlicense Zlib -adler2@2.0.1 X X X -aead@0.5.2 X X -aes@0.8.4 X X -aes-gcm@0.10.3 X X -ahash@0.8.12 X X -aho-corasick@1.1.4 X X -alloc-no-stdlib@2.0.4 X -alloc-stdlib@0.2.2 X -android_system_properties@0.1.5 X X -anyhow@1.0.102 X X -apache-avro@0.21.0 X -array-init@2.1.0 X X -arrow-arith@58.3.0 X -arrow-array@58.3.0 X X -arrow-buffer@58.3.0 X -arrow-cast@58.3.0 X -arrow-data@58.3.0 X -arrow-ipc@58.1.0 X -arrow-ord@58.3.0 X -arrow-schema@58.3.0 X -arrow-select@58.3.0 X -arrow-string@58.3.0 X -as-any@0.3.2 X X -async-lock@3.4.2 X X -async-trait@0.1.89 X X -atoi@2.0.0 X 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+windows-result@0.4.1 X X +windows-strings@0.5.1 X X +windows-sys@0.48.0 X X +windows-sys@0.52.0 X X +windows-sys@0.60.2 X X +windows-sys@0.61.2 X X +windows-targets@0.48.5 X X +windows-targets@0.52.6 X X +windows-targets@0.53.5 X X +windows_aarch64_gnullvm@0.48.5 X X +windows_aarch64_gnullvm@0.52.6 X X +windows_aarch64_gnullvm@0.53.1 X X +windows_aarch64_msvc@0.48.5 X X +windows_aarch64_msvc@0.52.6 X X +windows_aarch64_msvc@0.53.1 X X +windows_i686_gnu@0.48.5 X X +windows_i686_gnu@0.52.6 X X +windows_i686_gnu@0.53.1 X X +windows_i686_gnullvm@0.52.6 X X +windows_i686_gnullvm@0.53.1 X X +windows_i686_msvc@0.48.5 X X +windows_i686_msvc@0.52.6 X X +windows_i686_msvc@0.53.1 X X +windows_x86_64_gnu@0.48.5 X X +windows_x86_64_gnu@0.52.6 X X +windows_x86_64_gnu@0.53.1 X X +windows_x86_64_gnullvm@0.48.5 X X +windows_x86_64_gnullvm@0.52.6 X X +windows_x86_64_gnullvm@0.53.1 X X +windows_x86_64_msvc@0.48.5 X X +windows_x86_64_msvc@0.52.6 X X +windows_x86_64_msvc@0.53.1 X X +wit-bindgen@0.51.0 X X X +writeable@0.6.2 X +xattr@1.6.1 X X +yoke@0.8.1 X +yoke-derive@0.8.1 X +zerocopy@0.8.47 X X X +zerocopy-derive@0.8.47 X X X +zerofrom@0.1.6 X +zerofrom-derive@0.1.6 X +zeroize@1.8.2 X X +zerotrie@0.2.3 X +zerovec@0.11.5 X +zerovec-derive@0.11.2 X +zlib-rs@0.6.3 X +zmij@1.0.21 X +zstd@0.13.3 X +zstd-safe@7.2.4 X X +zstd-sys@2.0.16+zstd.1.5.7 X X diff --git a/crates/iceberg/public-api.txt b/crates/iceberg/public-api.txt index 653649e6cf..9592dc195f 100644 --- a/crates/iceberg/public-api.txt +++ b/crates/iceberg/public-api.txt @@ -169,6 +169,30 @@ impl serde_core::ser::Serialize for iceberg::compression::CompressionCodec pub fn iceberg::compression::CompressionCodec::serialize(&self, serializer: S) -> core::result::Result<::Ok, ::Error> impl<'de> serde_core::de::Deserialize<'de> for iceberg::compression::CompressionCodec pub fn iceberg::compression::CompressionCodec::deserialize>(deserializer: D) -> core::result::Result::Error> +pub mod iceberg::delete_vector +pub struct iceberg::delete_vector::DeleteVector +impl iceberg::delete_vector::DeleteVector +pub fn iceberg::delete_vector::DeleteVector::from_puffin_blob(blob: iceberg::puffin::Blob) -> iceberg::Result +pub fn iceberg::delete_vector::DeleteVector::insert(&mut self, pos: u64) -> bool +pub fn iceberg::delete_vector::DeleteVector::insert_positions(&mut self, positions: &[u64]) -> iceberg::Result +pub fn iceberg::delete_vector::DeleteVector::is_empty(&self) -> bool +pub fn iceberg::delete_vector::DeleteVector::iter(&self) -> iceberg::delete_vector::DeleteVectorIterator<'_> +pub fn iceberg::delete_vector::DeleteVector::len(&self) -> u64 +pub fn iceberg::delete_vector::DeleteVector::new(roaring_treemap: roaring::treemap::RoaringTreemap) -> iceberg::delete_vector::DeleteVector +pub fn iceberg::delete_vector::DeleteVector::to_puffin_blob(&self, properties: std::collections::hash::map::HashMap) -> iceberg::Result +pub async fn iceberg::delete_vector::DeleteVector::write_to_puffin_file(&self, file_io: &iceberg::io::FileIO, location: alloc::string::String, referenced_data_file: alloc::string::String, partition: iceberg::spec::Struct, partition_spec_id: i32) -> iceberg::Result +impl core::default::Default for iceberg::delete_vector::DeleteVector +pub fn iceberg::delete_vector::DeleteVector::default() -> iceberg::delete_vector::DeleteVector +impl core::fmt::Debug for iceberg::delete_vector::DeleteVector +pub fn iceberg::delete_vector::DeleteVector::fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result +impl core::ops::bit::BitOrAssign for iceberg::delete_vector::DeleteVector +pub fn iceberg::delete_vector::DeleteVector::bitor_assign(&mut self, other: Self) +pub struct iceberg::delete_vector::DeleteVectorIterator<'a> +impl iceberg::delete_vector::DeleteVectorIterator<'_> +pub fn iceberg::delete_vector::DeleteVectorIterator<'_>::advance_to(&mut self, pos: u64) +impl core::iter::traits::iterator::Iterator for iceberg::delete_vector::DeleteVectorIterator<'_> +pub type iceberg::delete_vector::DeleteVectorIterator<'_>::Item = u64 +pub fn iceberg::delete_vector::DeleteVectorIterator<'_>::next(&mut self) -> core::option::Option pub mod iceberg::encryption pub mod iceberg::encryption::kms pub struct iceberg::encryption::kms::GeneratedKey @@ -1210,10 +1234,18 @@ impl iceberg::puffin::PuffinReader pub async fn iceberg::puffin::PuffinReader::blob(&self, blob_metadata: &iceberg::puffin::BlobMetadata) -> iceberg::Result pub async fn iceberg::puffin::PuffinReader::file_metadata(&self) -> iceberg::Result<&iceberg::puffin::FileMetadata> pub fn iceberg::puffin::PuffinReader::new(input_file: iceberg::io::InputFile) -> Self +pub struct iceberg::puffin::PuffinWriteResult +pub iceberg::puffin::PuffinWriteResult::blobs_metadata: alloc::vec::Vec +pub iceberg::puffin::PuffinWriteResult::file_size_in_bytes: u64 +impl core::clone::Clone for iceberg::puffin::PuffinWriteResult +pub fn iceberg::puffin::PuffinWriteResult::clone(&self) -> iceberg::puffin::PuffinWriteResult +impl core::fmt::Debug for iceberg::puffin::PuffinWriteResult +pub fn iceberg::puffin::PuffinWriteResult::fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result pub struct iceberg::puffin::PuffinWriter impl iceberg::puffin::PuffinWriter pub async fn iceberg::puffin::PuffinWriter::add(&mut self, blob: iceberg::puffin::Blob, compression_codec: iceberg::compression::CompressionCodec) -> iceberg::Result<()> pub async fn iceberg::puffin::PuffinWriter::close(self) -> iceberg::Result<()> +pub async fn iceberg::puffin::PuffinWriter::close_with_metadata(self) -> iceberg::Result pub async fn iceberg::puffin::PuffinWriter::new(output_file: &iceberg::io::OutputFile, properties: std::collections::hash::map::HashMap, compress_footer: bool) -> iceberg::Result pub const iceberg::puffin::APACHE_DATASKETCHES_THETA_V1: &str pub const iceberg::puffin::CREATED_BY_PROPERTY: &str @@ -3082,6 +3114,7 @@ pub fn iceberg::transaction::Transaction::expire_snapshots(&self) -> iceberg::tr pub fn iceberg::transaction::Transaction::fast_append(&self) -> iceberg::transaction::append::FastAppendAction pub fn iceberg::transaction::Transaction::new(table: &iceberg::table::Table) -> Self pub fn iceberg::transaction::Transaction::replace_sort_order(&self) -> iceberg::transaction::sort_order::ReplaceSortOrderAction +pub fn iceberg::transaction::Transaction::row_delta(&self) -> iceberg::transaction::row_delta::RowDeltaAction pub fn iceberg::transaction::Transaction::update_location(&self) -> iceberg::transaction::update_location::UpdateLocationAction pub fn iceberg::transaction::Transaction::update_schema(&self) -> iceberg::transaction::update_schema::UpdateSchemaAction pub fn iceberg::transaction::Transaction::update_statistics(&self) -> iceberg::transaction::update_statistics::UpdateStatisticsAction diff --git a/crates/integrations/playground/DEPENDENCIES.rust.tsv b/crates/integrations/playground/DEPENDENCIES.rust.tsv index 011fa55a86..ac6f3b00de 100644 --- a/crates/integrations/playground/DEPENDENCIES.rust.tsv +++ b/crates/integrations/playground/DEPENDENCIES.rust.tsv @@ -1,517 +1,558 @@ -crate 0BSD Apache-2.0 Apache-2.0 WITH LLVM-exception BSD-2-Clause BSD-3-Clause BSL-1.0 CC0-1.0 ISC LGPL-2.1-or-later MIT MIT-0 MPL-2.0 Unicode-3.0 Unlicense Zlib bzip2-1.0.6 -adler2@2.0.1 X X X -aead@0.5.2 X X -aes@0.8.4 X X -aes-gcm@0.10.3 X X -ahash@0.8.12 X X -aho-corasick@1.1.4 X X -alloc-no-stdlib@2.0.4 X -alloc-stdlib@0.2.2 X -allocator-api2@0.2.21 X X -android_system_properties@0.1.5 X X -anstream@0.6.21 X X -anstream@1.0.0 X X -anstyle@1.0.14 X X -anstyle-parse@0.2.7 X X -anstyle-parse@1.0.0 X X -anstyle-query@1.1.5 X X -anstyle-wincon@3.0.11 X X -anyhow@1.0.102 X X -apache-avro@0.21.0 X -ar_archive_writer@0.5.1 X -array-init@2.1.0 X X -arrayref@0.3.9 X -arrayvec@0.7.6 X X -arrow@58.1.0 X -arrow-arith@58.3.0 X -arrow-array@58.3.0 X X -arrow-buffer@58.3.0 X -arrow-cast@58.3.0 X -arrow-csv@58.1.0 X -arrow-data@58.3.0 X -arrow-ipc@58.1.0 X -arrow-json@58.1.0 X -arrow-ord@58.3.0 X -arrow-row@58.1.0 X -arrow-schema@58.3.0 X -arrow-select@58.3.0 X -arrow-string@58.3.0 X -as-any@0.3.2 X X -async-compression@0.4.41 X X -async-lock@3.4.2 X X -async-trait@0.1.89 X X -atoi@2.0.0 X -atomic-waker@1.1.2 X X -autocfg@1.5.0 X X -aws-config@1.8.15 X -aws-credential-types@1.2.14 X -aws-lc-rs@1.16.2 X X -aws-lc-sys@0.39.0 X X X X X -aws-runtime@1.7.2 X -aws-sdk-sso@1.97.0 X -aws-sdk-ssooidc@1.99.0 X -aws-sdk-sts@1.101.0 X -aws-sigv4@1.4.2 X -aws-smithy-async@1.2.14 X -aws-smithy-http@0.63.6 X -aws-smithy-http-client@1.1.12 X -aws-smithy-json@0.62.5 X -aws-smithy-observability@0.2.6 X -aws-smithy-query@0.60.15 X -aws-smithy-runtime@1.10.3 X -aws-smithy-runtime-api@1.11.6 X -aws-smithy-types@1.4.7 X -aws-smithy-xml@0.60.15 X -aws-types@1.3.14 X -backon@1.6.0 X -base64@0.22.1 X X -base64-simd@0.8.0 X -bigdecimal@0.4.10 X X -bimap@0.6.3 X X -bitflags@2.11.0 X X -blake2@0.10.6 X X -blake3@1.8.3 X X X -block-buffer@0.10.4 X X -bnum@0.12.1 X X 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+windows_aarch64_gnullvm@0.48.5 X X +windows_aarch64_gnullvm@0.52.6 X X +windows_aarch64_gnullvm@0.53.1 X X +windows_aarch64_msvc@0.48.5 X X +windows_aarch64_msvc@0.52.6 X X +windows_aarch64_msvc@0.53.1 X X +windows_i686_gnu@0.48.5 X X +windows_i686_gnu@0.52.6 X X +windows_i686_gnu@0.53.1 X X +windows_i686_gnullvm@0.52.6 X X +windows_i686_gnullvm@0.53.1 X X +windows_i686_msvc@0.48.5 X X +windows_i686_msvc@0.52.6 X X +windows_i686_msvc@0.53.1 X X +windows_x86_64_gnu@0.48.5 X X +windows_x86_64_gnu@0.52.6 X X +windows_x86_64_gnu@0.53.1 X X +windows_x86_64_gnullvm@0.48.5 X X +windows_x86_64_gnullvm@0.52.6 X X +windows_x86_64_gnullvm@0.53.1 X X +windows_x86_64_msvc@0.48.5 X X +windows_x86_64_msvc@0.52.6 X X +windows_x86_64_msvc@0.53.1 X X +winnow@0.7.15 X +wit-bindgen@0.51.0 X X X +writeable@0.6.2 X +xattr@1.6.1 X X +xmlparser@0.13.6 X X +yoke@0.8.1 X +yoke-derive@0.8.1 X +zerocopy@0.8.47 X X X +zerocopy-derive@0.8.47 X X X +zerofrom@0.1.6 X +zerofrom-derive@0.1.6 X +zeroize@1.8.2 X X +zerotrie@0.2.3 X +zerovec@0.11.5 X +zerovec-derive@0.11.2 X +zlib-rs@0.6.3 X +zmij@1.0.21 X +zstd@0.13.3 X +zstd-safe@7.2.4 X X +zstd-sys@2.0.16+zstd.1.5.7 X X From 4e5802b79401d0bcebf3cdea25801e376e769efc Mon Sep 17 00:00:00 2001 From: Raghvendra Singh Date: Thu, 2 Jul 2026 08:34:06 +0530 Subject: [PATCH 16/16] fix(row_delta): never resurrect already-DELETED entries on manifest rewrite MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When rewriting a manifest that contains files being removed, the carry-forward branch marked every non-removed entry EXISTING with no is_alive() check, so an already-DELETED (superseded) entry was resurrected as live. A table accumulates one DELETED entry per prior rewrite per data file, so for deletion vectors this yields multiple live DVs for one data file and readers fail with "Can't index multiple DVs". Found on production tables with long rewrite histories — fresh test tables never catch it because they carry no DELETED entries. Only ALIVE survivors are carried forward as EXISTING; already-DELETED entries are dropped (the deletion stays recorded in its originating snapshot's manifest). Regression test constructs the deleted-then-rewritten shape and fails without the guard. Co-Authored-By: Claude Fable 5 Signed-off-by: Raghvendra Singh --- crates/iceberg/src/transaction/row_delta.rs | 100 +++++++++++++++++++- 1 file changed, 99 insertions(+), 1 deletion(-) diff --git a/crates/iceberg/src/transaction/row_delta.rs b/crates/iceberg/src/transaction/row_delta.rs index 432796dd39..44d167b8ba 100644 --- a/crates/iceberg/src/transaction/row_delta.rs +++ b/crates/iceberg/src/transaction/row_delta.rs @@ -225,9 +225,17 @@ impl SnapshotProduceOperation for RowDeltaOperation { for entry in manifest.entries() { if deleted_paths.contains(entry.data_file().file_path()) { writer.add_delete_entry((**entry).clone())?; - } else { + } else if entry.is_alive() { writer.add_existing_entry((**entry).clone())?; } + // else: an already-DELETED (status=2) entry not removed by this + // operation — DROP it. Carrying it forward as EXISTING would + // RESURRECT a superseded file: for deletion vectors a data file + // accumulates one DELETED DV entry per prior rewrite, so + // resurrecting them yields multiple "live" DVs for one data + // file and readers fail with "Can't index multiple DVs". The + // deletion stays recorded in its originating snapshot's + // manifest; it does not belong in this one. } result.push(writer.write_manifest_file().await?); } @@ -573,4 +581,94 @@ mod tests { ); assert!(found_added_c, "file-C should have an ADDED entry in S2"); } + + /// Resurrection guard: an already-DELETED entry in a rewritten manifest is + /// dropped, never carried forward as EXISTING. Without the `is_alive()` + /// check, S3's rewrite of the manifest holding file-A's DELETED entry + /// would resurrect file-A — for deletion vectors this yields multiple + /// live DVs per data file and readers fail with "Can't index multiple DVs". + #[tokio::test] + async fn test_row_delta_rewrite_does_not_resurrect_deleted_entries() { + let base_table = make_v2_minimal_table(); + + // S1: append file-A and file-B (one manifest holds both). + let file_a = make_data_file(&base_table, "test/a.parquet", 100); + let file_b = make_data_file(&base_table, "test/b.parquet", 200); + let mut c1 = Arc::new( + Transaction::new(&base_table) + .fast_append() + .add_data_files(vec![file_a.clone(), file_b.clone()]), + ) + .commit(&base_table) + .await + .unwrap(); + let snap1 = if let TableUpdate::AddSnapshot { snapshot } = + c1.take_updates().into_iter().next().unwrap() + { + snapshot + } else { + panic!("expected AddSnapshot"); + }; + let table_s1 = table_with_snapshot(&base_table, snap1).await; + + // S2: CoW-rewrite file-A into file-A2 — the rewritten manifest now + // records file-A as DELETED and file-B as EXISTING. + let file_a2 = make_data_file(&table_s1, "test/a2.parquet", 100); + let mut c2 = Arc::new( + Transaction::new(&table_s1) + .row_delta() + .remove_data_files(vec![file_a.clone()]) + .add_data_files(vec![file_a2]), + ) + .commit(&table_s1) + .await + .unwrap(); + let snap2 = if let TableUpdate::AddSnapshot { snapshot } = + c2.take_updates().into_iter().next().unwrap() + { + snapshot + } else { + panic!("expected AddSnapshot"); + }; + let table_s2 = table_with_snapshot(&table_s1, snap2).await; + + // S3: CoW-rewrite file-B — this rewrites the manifest that still + // carries file-A's DELETED entry. file-A must NOT come back as EXISTING. + let file_b2 = make_data_file(&table_s2, "test/b2.parquet", 200); + let mut c3 = Arc::new( + Transaction::new(&table_s2) + .row_delta() + .remove_data_files(vec![file_b.clone()]) + .add_data_files(vec![file_b2]), + ) + .commit(&table_s2) + .await + .unwrap(); + let updates3 = c3.take_updates(); + let snap3 = if let TableUpdate::AddSnapshot { ref snapshot } = updates3[0] { + snapshot + } else { + panic!("expected AddSnapshot"); + }; + + let manifest_list = table_s2 + .manifest_list_reader(&std::sync::Arc::new(snap3.clone())) + .load() + .await + .unwrap(); + for manifest_file in manifest_list.entries() { + let manifest = manifest_file + .load_manifest(table_s2.file_io()) + .await + .unwrap(); + for entry in manifest.entries() { + if entry.data_file().file_path() == "test/a.parquet" { + assert!( + !entry.is_alive(), + "file-A was superseded in S2; the S3 rewrite must not resurrect it" + ); + } + } + } + } }