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Avoid <code>CometColumnarExchange</code> when next query stage requires <code>CometColumnarToRow</code>

enhancementNew feature or requestNew feature or request

Status: Open.

#2880 In apache/datafusion-comet;

· andygrove opened on Dec 11, 2025

Optimize native shuffle to write schema once per output partition instead of once per batch

enhancementNew feature or requestNew feature or request

performance

Status: Open.

#2928 In apache/datafusion-comet;

· andygrove opened on Dec 17, 2025

Standardize microbenchmarks

enhancementNew feature or requestNew feature or request

Status: Open.

#2955 In apache/datafusion-comet;

· andygrove opened on Dec 22, 2025

Improve performance of <code>contains</code> expression

enhancementNew feature or requestNew feature or request

good first issueGood for newcomersGood for newcomers

performance

Status: Open.

#2972 In apache/datafusion-comet;

· andygrove opened on Dec 23, 2025

Improve performance of <code>startsWith</code> and <code>endsWith</code> expressions

enhancementNew feature or requestNew feature or request

good first issueGood for newcomersGood for newcomers

performance

Status: Open.

#2973 In apache/datafusion-comet;

· andygrove opened on Dec 23, 2025

Improve performance of <code>repeat</code> expression

enhancementNew feature or requestNew feature or request

good first issueGood for newcomersGood for newcomers

performance

Status: Open.

#2974 In apache/datafusion-comet;

· andygrove opened on Dec 23, 2025

Improve performance of <code>reverse</code> expression

enhancementNew feature or requestNew feature or request

good first issueGood for newcomersGood for newcomers

performance

Status: Open.

#2975 In apache/datafusion-comet;

· andygrove opened on Dec 23, 2025

Improve performance of <code>translate</code> expression

enhancementNew feature or requestNew feature or request

good first issueGood for newcomersGood for newcomers

performance

Status: Open.

#2976 In apache/datafusion-comet;

· andygrove opened on Dec 23, 2025

Improve performance of <code>trim</code> expressions

enhancementNew feature or requestNew feature or request

good first issueGood for newcomersGood for newcomers

performance

Status: Open.

#2977 In apache/datafusion-comet;

· andygrove opened on Dec 23, 2025

[EPIC] Optimize performance for slow expressions

enhancementNew feature or requestNew feature or request

good first issueGood for newcomersGood for newcomers

performance

Status: Open.

#2986 In apache/datafusion-comet;

· andygrove opened on Dec 24, 2025

Improve performance of first/last aggregates

enhancementNew feature or requestNew feature or request

performance

Status: Open.

#3022 In apache/datafusion-comet;

· andygrove opened on Jan 2, 2026

Improve performance of conditional expressions

enhancementNew feature or requestNew feature or request

performance

Status: Open.

#3025 In apache/datafusion-comet;

· andygrove opened on Jan 2, 2026

Improve performance of <code>in_list</code> expressions

enhancementNew feature or requestNew feature or request

performance

Status: Open.

#3027 In apache/datafusion-comet;

· andygrove opened on Jan 2, 2026

Improve performance of <code>sha</code> hashing expressions

enhancementNew feature or requestNew feature or request

performance

Status: Open.

#3029 In apache/datafusion-comet;

· andygrove opened on Jan 2, 2026