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OpenJul 17, 2026
Due by July 31, 2026
•Last updated 48% complete
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Consistent debug logging levels and messages
enhancementNew feature or requestNew feature or requestStatus: Open.#3445 In apache/datafusion-comet;Comet 1.0.0 Release
enhancementNew feature or requestNew feature or requestStatus: Open.#4082 In apache/datafusion-comet;Audit Spark SQL configs that affect query semantics and ensure Comet honors them (or falls back)
area:expressionsExpression evaluationExpression evaluationarea:scanParquet scan / data readingParquet scan / data readingenhancementNew feature or requestNew feature or requestpriority:mediumFunctional bugs, performance regressions, broken featuresFunctional bugs, performance regressions, broken featuresStatus: Open.#4180 In apache/datafusion-comet;Enable spark.comet.exec.localTableScan.enabled when running Spark SQL tests
priority:lowMinor issues, test failures, tooling, cosmeticMinor issues, test failures, tooling, cosmeticspark sql testsSpark SQL test failuresSpark SQL test failuresStatus: Open.#4347 In apache/datafusion-comet;- Status: Draft (not ready).apache/datafusion-cometnumber 4393#4393 In apache/datafusion-comet;
- Status: Draft (not ready).apache/datafusion-cometnumber 4374#4374 In apache/datafusion-comet;
Register CometArrowAllocator as a Spark MemoryConsumer for JVM-UDF dispatch
area:expressionsExpression evaluationExpression evaluationarea:ffiArrow FFI / JNI boundaryArrow FFI / JNI boundarypriority:mediumFunctional bugs, performance regressions, broken featuresFunctional bugs, performance regressions, broken featuresStatus: Open.#4174 In apache/datafusion-comet;Re-enable COUNT for mixed Spark partial / Comet final aggregate execution
area:aggregationHash aggregates, aggregate expressionsHash aggregates, aggregate expressionspriority:mediumFunctional bugs, performance regressions, broken featuresFunctional bugs, performance regressions, broken featuresStatus: Open.#4242 In apache/datafusion-comet;[hdfs-opendal] Got an
reader got too little dataerror on hdfs-opendalarea:scanParquet scan / data readingParquet scan / data readingbugSomething isn't workingSomething isn't workingnative_datafusionSpecific to native_datafusion scan typeSpecific to native_datafusion scan typepriority:mediumFunctional bugs, performance regressions, broken featuresFunctional bugs, performance regressions, broken featuresStatus: Open.#2400 In apache/datafusion-comet;ExecutionMemoryPool errors releasing more memory than allocated
bugSomething isn't workingSomething isn't workingpriority:highCrashes, panics, segfaults, major functional breakageCrashes, panics, segfaults, major functional breakageStatus: Open.#2453 In apache/datafusion-comet;Dropping a GlobalRef in a detached thread
area:ffiArrow FFI / JNI boundaryArrow FFI / JNI boundarybugSomething isn't workingSomething isn't workingpriority:highCrashes, panics, segfaults, major functional breakageCrashes, panics, segfaults, major functional breakageStatus: Open.#2470 In apache/datafusion-comet;[native_datafusion] Add support for reading row index metadata columns
enhancementNew feature or requestNew feature or requestnative_datafusionSpecific to native_datafusion scan typeSpecific to native_datafusion scan typeStatus: Open.#3432 In apache/datafusion-comet;Implement JVM UDFs for all date/time expressions
area:expressionsExpression evaluationExpression evaluationenhancementNew feature or requestNew feature or requestpriority:mediumFunctional bugs, performance regressions, broken featuresFunctional bugs, performance regressions, broken featuresStatus: Open.#4311 In apache/datafusion-comet;native_datafusion: ParquetSchemaConvert error does not include the file path
native_datafusionSpecific to native_datafusion scan typeSpecific to native_datafusion scan typeStatus: Open.#4316 In apache/datafusion-comet;FIRST/LAST returns wrong result with
PartialMergebugSomething isn't workingSomething isn't workingpriority:mediumFunctional bugs, performance regressions, broken featuresFunctional bugs, performance regressions, broken featuresStatus: Open.#4131 In apache/datafusion-comet;Establish nomenclature style guide and audit operator names for clarity
documentationImprovements or additions to documentationImprovements or additions to documentationpriority:lowMinor issues, test failures, tooling, cosmeticMinor issues, test failures, tooling, cosmeticStatus: Open.#4419 In apache/datafusion-comet;Add a docs-review Claude skill to enforce style guide and documentation quality
documentationImprovements or additions to documentationImprovements or additions to documentationpriority:lowMinor issues, test failures, tooling, cosmeticMinor issues, test failures, tooling, cosmeticStatus: Open.#4420 In apache/datafusion-comet;- Status: Open (in progress).apache/datafusion-cometnumber 4565#4565 In apache/datafusion-comet;
- Status: Open (in progress).apache/datafusion-cometnumber 4720#4720 In apache/datafusion-comet;
- Status: Open (in progress).apache/datafusion-cometnumber 4775#4775 In apache/datafusion-comet;
- Status: Open (in progress).apache/datafusion-cometnumber 4782#4782 In apache/datafusion-comet;
- Status: Open (in progress).apache/datafusion-cometnumber 4798#4798 In apache/datafusion-comet;
- Status: Open (in progress).apache/datafusion-cometnumber 4802#4802 In apache/datafusion-comet;
- Status: Open (in progress).apache/datafusion-cometnumber 4816#4816 In apache/datafusion-comet;
- Status: Open (in progress).apache/datafusion-cometnumber 4817#4817 In apache/datafusion-comet;