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Rebalance deep associative binary expression chains (Add, Multiply, bitwise) to avoid protobuf recursion limit

area:expressionsExpression evaluationExpression evaluation

requires-triage

Status: Open.

#4577 In apache/datafusion-comet;

· andygrove opened on Jun 2, 2026

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

enhancementNew feature or requestNew feature or request

requires-triage

Status: Open.

#4576 In apache/datafusion-comet;

· andygrove opened on Jun 2, 2026

CometFromUnixTime reports unsupported format patterns as Incompatible instead of Unsupported

bugSomething isn't workingSomething isn't working

df compatibilityAny issue related to DF & Spark compatibilityAny issue related to DF & Spark compatibility

requires-triage

Status: Open.

#4575 In apache/datafusion-comet;

· andygrove opened on Jun 2, 2026

String expression (collation) audit followup

bugSomething isn't workingSomething isn't working

requires-triage

Status: Open.

#4573 In apache/datafusion-comet;

· parthchandra opened on Jun 2, 2026

Comet 0.17.0 Release

enhancementNew feature or requestNew feature or request

requires-triage

Status: Open.

#4564 In apache/datafusion-comet;

· andygrove opened on Jun 2, 2026

Support StringSplitSQL to enable split_part

enhancementNew feature or requestNew feature or request

expressionSpark expression relatedSpark expression related

requires-triage

Status: Open.

#4561 In apache/datafusion-comet;

· andygrove opened on Jun 1, 2026

array_size returns -1 instead of NULL for NULL input

bugSomething isn't workingSomething isn't working

expressionSpark expression relatedSpark expression related

requires-triage

Status: Open.

#4560 In apache/datafusion-comet;

· andygrove opened on Jun 1, 2026

Support aes_encrypt / aes_decrypt / try_aes_decrypt natively

enhancementNew feature or requestNew feature or request

expressionSpark expression relatedSpark expression related

requires-triage

Status: Open.

#4558 In apache/datafusion-comet;

· andygrove opened on Jun 1, 2026

try_to_date / try_to_timestamp fall back to Spark even though to_date / to_timestamp are accelerated

enhancementNew feature or requestNew feature or request

expressionSpark expression relatedSpark expression related

requires-triage

temporal expressions

Status: Open.

#4556 In apache/datafusion-comet;

· andygrove opened on Jun 1, 2026

try_make_timestamp returns wrong values for invalid inputs instead of NULL

bugSomething isn't workingSomething isn't working

requires-triage

Status: Open.

#4554 In apache/datafusion-comet;

· andygrove opened on Jun 1, 2026

Natively support time-window grouping expressions: window, session_window, window_time

enhancementNew feature or requestNew feature or request

expressionSpark expression relatedSpark expression related

requires-triage

temporal expressions

Status: Open.

#4553 In apache/datafusion-comet;

· andygrove opened on Jun 1, 2026

Natively support regr_sxx, regr_syy, regr_sxy, regr_slope, regr_intercept, regr_r2 aggregates

area:aggregationHash aggregates, aggregate expressionsHash aggregates, aggregate expressions

enhancementNew feature or requestNew feature or request

expressionSpark expression relatedSpark expression related

requires-triage

Status: Open.

#4552 In apache/datafusion-comet;

· andygrove opened on Jun 1, 2026