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Consistent debug logging levels and messages

enhancementNew feature or requestNew feature or request

Status: Open.

#3445 In apache/datafusion-comet;

· mbutrovich opened on Feb 8, 2026

Comet 1.0.0 Release

enhancementNew feature or requestNew feature or request

Status: Open.

#4082 In apache/datafusion-comet;

· andygrove opened on Apr 25, 2026

Audit Spark SQL configs that affect query semantics and ensure Comet honors them (or falls back)

area:expressionsExpression evaluationExpression evaluation

area:scanParquet scan / data readingParquet scan / data reading

enhancementNew feature or requestNew feature or request

priority:mediumFunctional bugs, performance regressions, broken featuresFunctional bugs, performance regressions, broken features

Status: Open.

#4180 In apache/datafusion-comet;

· andygrove opened on May 1, 2026

Set up process for auditing all Spark commits to assess impact on Comet

enhancementNew feature or requestNew feature or request

priority:lowMinor issues, test failures, tooling, cosmeticMinor issues, test failures, tooling, cosmetic

Status: Open.

#4188 In apache/datafusion-comet;

· andygrove opened on May 3, 2026

chore: Publish specific documentation for each supported Spark version

enhancementNew feature or requestNew feature or request

Status: Open.

#510 In apache/datafusion-comet;

· andygrove opened on Jun 3, 2024

Enable spark.comet.exec.localTableScan.enabled when running Spark SQL tests

priority:lowMinor issues, test failures, tooling, cosmeticMinor issues, test failures, tooling, cosmetic

spark sql testsSpark SQL test failuresSpark SQL test failures

Status: Open.

#4347 In apache/datafusion-comet;

· mbutrovich opened on May 15, 2026

Enable spark.comet.sparkToColumnar.enabled when running Spark SQL tests

enhancementNew feature or requestNew feature or request

Status: Open.

#2723 In apache/datafusion-comet;

· andygrove opened on Nov 6, 2025

Iceberg 1.11 support

area:Iceberg

priority:highCrashes, panics, segfaults, major functional breakageCrashes, panics, segfaults, major functional breakage

Status: Open.

Feature

#4381 In apache/datafusion-comet;

· mbutrovich opened on May 21, 2026

Investigate adopting DataFusion's allocator-level memory accounting to replace manual memory tuning

enhancementNew feature or requestNew feature or request

priority:mediumFunctional bugs, performance regressions, broken featuresFunctional bugs, performance regressions, broken features

Status: Open.

#4576 In apache/datafusion-comet;

· andygrove opened on Jun 2, 2026

feat: add Comet CachedBatchSerializer for native in-memory cache

Status: Draft (not ready).

apache/datafusion-cometnumber 4569

#4569 In apache/datafusion-comet;

· andygrove opened on Jun 2, 2026

feat: Add Native Support for In-Memory Cache

Status: Open (in progress).

apache/datafusion-cometnumber 4591

#4591 In apache/datafusion-comet;

· pchintar opened on Jun 4, 2026

feat: Add experimental support for accelerated PyArrow UDFs

Status: Open (in progress).

apache/datafusion-cometnumber 4234

#4234 In apache/datafusion-comet;

· andygrove opened on May 6, 2026

feat: enable CometLocalTableScanExec by default

Status: Draft (not ready).

apache/datafusion-cometnumber 4393

#4393 In apache/datafusion-comet;

· mbutrovich opened on May 21, 2026

feat: re-enable COUNT for mixed Spark partial / Comet final aggregates

Status: Open (in progress).

apache/datafusion-cometnumber 4374

#4374 In apache/datafusion-comet;

· andygrove opened on May 20, 2026

feat: support interval types and make_ym_interval / make_dt_interval

Status: Open (in progress).

apache/datafusion-cometnumber 4541

#4541 In apache/datafusion-comet;

· andygrove opened on May 30, 2026