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Enable windowed aggregates and fix correctness issues

enhancementNew feature or requestNew feature or request

requires-triage

Status: Open.

#4007 In apache/datafusion-comet;

· andygrove opened on Apr 20, 2026

Add distinction between "info" and "fallback" messages

enhancementNew feature or requestNew feature or request

requires-triage

Status: Open.

#4006 In apache/datafusion-comet;

· andygrove opened on Apr 20, 2026

[EPIC] Improve Comet planning

enhancementNew feature or requestNew feature or request

requires-triage

Status: Open.

#4005 In apache/datafusion-comet;

· andygrove opened on Apr 20, 2026

Avoid JVM shuffle when parent stage will just convert back to rows

enhancementNew feature or requestNew feature or request

performance

requires-triage

Status: Open.

#4004 In apache/datafusion-comet;

· andygrove opened on Apr 20, 2026

·  

0.16.0

Task metrics (bytes read) for CometIcebergNativeScan

area:scanParquet scan / data readingParquet scan / data reading

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#4002 In apache/datafusion-comet;

· mbutrovich opened on Apr 20, 2026

[EPIC] Improve Comet metrics

enhancementNew feature or requestNew feature or request

EPIC

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

Status: Open.

#3996 In apache/datafusion-comet;

· comphead opened on Apr 18, 2026

Short-circuit serde compatibility checks when a node is already tagged as falling back

enhancementNew feature or requestNew feature or request

performance

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

Status: Open.

#3990 In apache/datafusion-comet;

· andygrove opened on Apr 18, 2026

·  

0.16.0

Add SMJ support for Timestamp join keys

enhancementNew feature or requestNew feature or request

Status: Open.

#3985 In apache/datafusion-comet;

· andygrove opened on Apr 17, 2026

[FEATURE] Shredded Parquet Reader/Writer support for Variant type

area:scanParquet scan / data readingParquet scan / data reading

area:writerNative Parquet writerNative Parquet writer

enhancementNew feature or requestNew feature or request

Status: Open.

#3983 In apache/datafusion-comet;

· Shekharrajak opened on Apr 17, 2026

Comet 0.14.2 Release

enhancementNew feature or requestNew feature or request

Status: Open.

#3980 In apache/datafusion-comet;

· andygrove opened on Apr 17, 2026

chore: DataFusion 54.0.0

buildBuild environmentBuild environment

dependenciesPull requests that update a dependency filePull requests that update a dependency file

enhancementNew feature or requestNew feature or request

Status: Open.

#3978 In apache/datafusion-comet;

· comphead opened on Apr 17, 2026

Add AGENTS.md

documentationImprovements or additions to documentationImprovements or additions to documentation

enhancementNew feature or requestNew feature or request

Status: Open.

#3973 In apache/datafusion-comet;

· andygrove opened on Apr 17, 2026