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Investigate possibility of returning Pending after each batch inserted into "holding" streams.

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19680 In apache/datafusion;

· EmilyMatt opened on Jan 7, 2026

Consider spilling batch in chunks in ExternalSorter.

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19679 In apache/datafusion;

· EmilyMatt opened on Jan 7, 2026

Optimize <code>required_columns</code> from <code>BTreeSet&lt;usize&gt;</code> to <code>Vec&lt;usize&gt;</code> in struct PushdownChecker&lt;'schema&gt;

Status: Open.

#19673 In apache/datafusion;

· kosiew opened on Jan 7, 2026

bump sqlparser from 0.59.0 to 0.60.0

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19671 In apache/datafusion;

· Jefffrey opened on Jan 7, 2026

Track <code>elapsed_compute</code> for <code>AsyncFuncExec</code>

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19658 In apache/datafusion;

· 2010YOUY01 opened on Jan 6, 2026

Use pipeline aggregation when data is implicitly sorted by group-by keys

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19655 In apache/datafusion;

· NGA-TRAN opened on Jan 5, 2026

Poor performance of parquet pushdown with offset

enhancementNew feature or requestNew feature or request

performanceMake DataFusion fasterMake DataFusion faster

Status: Open.

Feature

#19654 In apache/datafusion;

· AntoinePrv opened on Jan 5, 2026

Andrew Lamb Weekly-ish Open Source plan - 2026-01-05

Status: Open.

#19652 In apache/datafusion;

· alamb opened on Jan 5, 2026

Partition values are not URL-decoded when extracted from Hive-style paths

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#19650 In apache/datafusion;

· greedAuguria opened on Jan 5, 2026

Fixed blocks in aggregation state for better memory management

Status: Open.

#19649 In apache/datafusion;

· alchemist51 opened on Jan 5, 2026

DynamicFilterPhysicalExpr violates Hash/Eq contract

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#19641 In apache/datafusion;

· adriangb opened on Jan 5, 2026

Support DISTINCT ORDER BY LIMIT query use GroupedTopKAggregateStream

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#19638 In apache/datafusion;

· haohuaijin opened on Jan 4, 2026