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Revert transition-heavy stages to Spark row-based execution

enhancementNew feature or requestNew feature or request

requires-triage

Status: Open.

#4518 In apache/datafusion-comet;

· karuppayya opened on May 29, 2026

Native divide-by-zero in a dispatched ScalaUDF surfaces CometNativeException instead of SparkArithmeticException

requires-triage

Status: Open.

#4517 In apache/datafusion-comet;

· andygrove opened on May 29, 2026

CometProject and CometHashAggregate do not perform cross-sibling subexpression elimination over ScalaUDF

requires-triage

Status: Open.

#4516 In apache/datafusion-comet;

· andygrove opened on May 29, 2026

DataFusion / DataFusion-Spark functions whose Arrow return type drifts from Spark catalyst's declared type

requires-triage

Status: Open.

#4515 In apache/datafusion-comet;

· mbutrovich opened on May 29, 2026

Enable Scala/Java UDF codegen dispatch by default

enhancementNew feature or requestNew feature or request

requires-triage

Status: Open.

#4513 In apache/datafusion-comet;

· andygrove opened on May 29, 2026

[EPIC] Provide JVM/codegen-dispatch implementations for Incompatible expressions so they never fall back by default

enhancementNew feature or requestNew feature or request

requires-triage

Status: Open.

#4506 In apache/datafusion-comet;

· andygrove opened on May 28, 2026

map expression audit follow-ups (from #4478)

correctness

requires-triage

Status: Open.

#4505 In apache/datafusion-comet;

· andygrove opened on May 28, 2026

collection expression audit follow-ups (from #4473)

correctness

requires-triage

Status: Open.

#4504 In apache/datafusion-comet;

· andygrove opened on May 28, 2026

array expression audit follow-ups (from #4483)

correctness

requires-triage

Status: Open.

#4503 In apache/datafusion-comet;

· andygrove opened on May 28, 2026

date/time expression audit follow-ups (from #4448)

correctness

requires-triage

Status: Open.

#4502 In apache/datafusion-comet;

· andygrove opened on May 28, 2026

cast expression audit follow-ups (from #4493)

correctness

requires-triage

Status: Open.

#4501 In apache/datafusion-comet;

· andygrove opened on May 28, 2026

Math expression audit follow-ups (from #4486)

correctness

requires-triage

Status: Open.

#4500 In apache/datafusion-comet;

· andygrove opened on May 28, 2026

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