Comet 0.15.0 blog post - #170
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mbutrovich
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Apr 20, 2026
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| - **Date/time functions**: `days`, `hours`, `date_from_unix_date` | ||
| - **String/JSON functions**: native `get_json_object` with improved performance over the fallback path | ||
| - **Hash/math functions**: `crc32c`, `bin` |
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Just to clarify: crc32c wasn't an added expression. It's a new checksum algorithm for Spark 4.0 for shuffle files.
mbutrovich
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Apr 20, 2026
Co-authored-by: Matt Butrovich <mbutrovich@users.noreply.github.com>
kevinjqliu
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Apr 20, 2026
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LGTM, great writeup
hyperlinks all work
| Together, these changes reduce CPU and memory overhead for shuffle-heavy, broadcast-heavy, and | ||
| object-storage-bound workloads. | ||
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| ## Native Iceberg Reader Enabled by Default |
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| ## Deprecations and Removals | ||
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| The `SupportsComet` interface has been removed, along with the Java-based Iceberg integration path (which is |
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do you think this is a good place to link to apache/datafusion-comet#2921?
- Remove crc32c from new expressions (it's a shuffle checksum, not an expression) - Add Dynamic Partition Pruning callout for native Iceberg reader - Link to comet#2921 for Iceberg direction context - Fix missing blank lines around SMJ section
kazuyukitanimura
approved these changes
Apr 21, 2026
andygrove
marked this pull request as ready for review
April 22, 2026 13:26
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Merged. Thank you @kazuyukitanimura @mbutrovich @kevinjqliu! |
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Staged version: https://datafusion.staged.apache.org/blog/2026/04/18/datafusion-comet-0.15.0/