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Optimize CometBroadcastHashJoin: use CollectLeft partition mode and cache deserialized broadcast batches

Status: Open.

#3692 In apache/datafusion-comet;

· andygrove opened on Mar 13, 2026

[blog post] Spark compatibility testing

enhancementNew feature or requestNew feature or request

Status: Open.

#3679 In apache/datafusion-comet;

· andygrove opened on Mar 12, 2026

[blog post] Using Arrow/DataFusion across JVM/Rust boundary

enhancementNew feature or requestNew feature or request

Status: Open.

#3678 In apache/datafusion-comet;

· andygrove opened on Mar 12, 2026

[blog post] Complex type support

enhancementNew feature or requestNew feature or request

Status: Open.

#3677 In apache/datafusion-comet;

· andygrove opened on Mar 12, 2026

[blog post] ANSI support

enhancementNew feature or requestNew feature or request

Status: Open.

#3676 In apache/datafusion-comet;

· andygrove opened on Mar 12, 2026

ci: use ubuntu-slim where applicable

Status: Open.

#3665 In apache/datafusion-comet;

· mbutrovich opened on Mar 11, 2026

arrays_except type mismatch

bugSomething isn't workingSomething isn't working

good first issueGood for newcomersGood for newcomers

Status: Open.

#3646 In apache/datafusion-comet;

· comphead opened on Mar 7, 2026

array_overlap correctness issue

bugSomething isn't workingSomething isn't working

correctness

good first issueGood for newcomersGood for newcomers

Status: Open.

#3645 In apache/datafusion-comet;

· comphead opened on Mar 7, 2026

array_union correctness issue

bugSomething isn't workingSomething isn't working

correctness

good first issueGood for newcomersGood for newcomers

Status: Open.

#3644 In apache/datafusion-comet;

· comphead opened on Mar 7, 2026

Native writer doesn't report written bytes

Status: Open.

#3608 In apache/datafusion-comet;

· comphead opened on Feb 26, 2026

Arrow Flight Shuffle for Comet

enhancementNew feature or requestNew feature or request

Status: Open.

#3596 In apache/datafusion-comet;

· Shekharrajak opened on Feb 25, 2026

Native Sort-Merge Writer for Iceberg ClusteredWriter Path

enhancementNew feature or requestNew feature or request

Status: Open.

#3595 In apache/datafusion-comet;

· Shekharrajak opened on Feb 25, 2026