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OpenJul 31, 2026
Due by July 31, 2026
•Last updated 67% complete
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native_cometscan implementationenhancementNew feature or requestNew feature or requestStatus: Closed (completed).#2177 In apache/datafusion-comet;Expressions added via CometExprShim bypass the CometExpressionSerde framework
enhancementNew feature or requestNew feature or requestStatus: Closed (completed).#4077 In apache/datafusion-comet;Create new Comet logo that is consistent with other DataFusion Projects
enhancementNew feature or requestNew feature or requestpriority:lowMinor issues, test failures, tooling, cosmeticMinor issues, test failures, tooling, cosmeticStatus: Closed (completed).#4099 In apache/datafusion-comet;chore: Publish specific documentation for each supported Spark version
enhancementNew feature or requestNew feature or requestStatus: Closed (completed).#510 In apache/datafusion-comet;- Status: Closed (abandoned).apache/datafusion-cometnumber 4201#4201 In apache/datafusion-comet;
Iceberg 1.11 support
priority:highCrashes, panics, segfaults, major functional breakageCrashes, panics, segfaults, major functional breakageStatus: Closed (completed).#4381 In apache/datafusion-comet;- Status: Merged (completed).apache/datafusion-cometnumber 4234#4234 In apache/datafusion-comet;
- Status: Merged (completed).apache/datafusion-cometnumber 4062#4062 In apache/datafusion-comet;
chore: DataFusion 54.0.0
buildBuild environmentBuild environmentdependenciesPull requests that update a dependency filePull requests that update a dependency fileenhancementNew feature or requestNew feature or requestStatus: Closed (completed).#3978 In apache/datafusion-comet;- Status: Closed (abandoned).apache/datafusion-cometnumber 4509#4509 In apache/datafusion-comet;
- Status: Merged (completed).apache/datafusion-cometnumber 4541#4541 In apache/datafusion-comet;
- Status: Merged (completed).apache/datafusion-cometnumber 4637#4637 In apache/datafusion-comet;
- Status: Merged (completed).apache/datafusion-cometnumber 4640#4640 In apache/datafusion-comet;
- Status: Merged (completed).apache/datafusion-cometnumber 4728#4728 In apache/datafusion-comet;
Is it possible to support PyArrow backed UDFs in Comet natively?
enhancementNew feature or requestNew feature or requestStatus: Closed (completed).#957 In apache/datafusion-comet;Eliminate remaining row<->Arrow round-trip in CometPythonMapInArrowExec
enhancementNew feature or requestNew feature or requestpriority:lowMinor issues, test failures, tooling, cosmeticMinor issues, test failures, tooling, cosmeticStatus: Closed (completed).#4240 In apache/datafusion-comet;Math expression audit follow-ups (from #4486)
area:expressionsExpression evaluationExpression evaluationpriority:mediumFunctional bugs, performance regressions, broken featuresFunctional bugs, performance regressions, broken featuresStatus: Closed (completed).#4500 In apache/datafusion-comet;hour/minute/second expressions incorrectly apply timezone conversion to TimestampNTZ inputs
enhancementNew feature or requestNew feature or requestStatus: Closed (completed).#3180 In apache/datafusion-comet;date_trunc incorrect results in non-UTC timezone
enhancementNew feature or requestNew feature or requestStatus: Closed (completed).#2649 In apache/datafusion-comet;[Bug] CAST(BinaryType AS StringType) uses unsafe from_utf8_unchecked (undefined behaviour)
area:expressionsExpression evaluationExpression evaluationbugSomething isn't workingSomething isn't workingpriority:highCrashes, panics, segfaults, major functional breakageCrashes, panics, segfaults, major functional breakageStatus: Closed (completed).#4488 In apache/datafusion-comet;org.apache.spark.sql.catalyst.expressions.BoundReference cannot be cast to class org.apache.spark.sql.ColumnarExpression
bugSomething isn't workingSomething isn't workingpriority:mediumFunctional bugs, performance regressions, broken featuresFunctional bugs, performance regressions, broken featuresStatus: Closed (completed).#1197 In apache/datafusion-comet;- Status: Merged (completed).apache/datafusion-cometnumber 4812#4812 In apache/datafusion-comet;
Distinct-aggregate rewrite can split an incompatible-buffer aggregate across Comet and Spark, causing crash or wrong results
area:aggregationHash aggregates, aggregate expressionsHash aggregates, aggregate expressionsbugSomething isn't workingSomething isn't workingpriority:criticalData corruption, silent wrong results, security issuesData corruption, silent wrong results, security issuesStatus: Closed (completed).#4813 In apache/datafusion-comet;- Status: Merged (completed).apache/datafusion-cometnumber 4720#4720 In apache/datafusion-comet;
- Status: Merged (completed).apache/datafusion-cometnumber 4750#4750 In apache/datafusion-comet;