All issues

Search results

Bug: unexpected behavior with special characters in input

Status: Open.

#24847 In apache/datafusion;

· ismael-saavedra opened on Sep 1, 2026

ComposedPhysicalExtensionCodec::encode_protobuf claims by-name encodes and breaks UDF round-trips

Status: Open.

#24830 In apache/datafusion;

· timsaucer opened on Aug 31, 2026

ComposedPhysicalExtensionCodec implements only 6 of the 12 PhysicalExtensionCodec methods

Status: Open.

#24829 In apache/datafusion;

· timsaucer opened on Aug 31, 2026

Dictionary-encoded group keys pay 27-37% aggregation tax vs Utf8View in TPC-H (Q2/Q19/Q20), DF 54 & 55 both

Status: Open.

#24822 In apache/datafusion;

· lxc512157407 opened on Aug 31, 2026

NestedLoopJoin buffers the build side into a single concat_batches allocation: 2x transient peak, invisible to the memory pool

Status: Open.

#24819 In apache/datafusion;

· ranflarion opened on Aug 31, 2026

Aggregate dynamic filter can prune rows required by unsupported expressions

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#24816 In apache/datafusion;

· lyne7-sc opened on Aug 31, 2026

Remove enforce_batch_size_in_joins in symmetric hash join, and deprecate the config

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#24812 In apache/datafusion;

· 2010YOUY01 opened on Aug 31, 2026

EnsureRequirements can silently drop fetch during distribution reoptimization

bugSomething isn't workingSomething isn't working

optimizerOptimizer rulesOptimizer rules

Status: Open.

#24807 In apache/datafusion;

· xudong963 opened on Aug 31, 2026

Add a section on writing effective tests to the contributor guide

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#24797 In apache/datafusion;

· 2010YOUY01 opened on Aug 30, 2026

refactor: split regular and existence join in hash join

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#24791 In apache/datafusion;

· 2010YOUY01 opened on Aug 30, 2026

Int96Coercer drops the metadata of struct, list and map fields.

Status: Open.

#24786 In apache/datafusion;

· ryzhyk opened on Aug 30, 2026

datafusion-proto: logical plan decode re-normalizes already-normalized plans, superlinear on wide plans

Status: Open.

#24777 In apache/datafusion;

· JoeryH opened on Aug 29, 2026