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Support multi-column (tuple) NOT IN subqueries with null-aware semantics

enhancementNew feature or requestNew feature or request

Status: Open.

#25737 In apache/datafusion;

· viirya opened on Sep 25, 2026

Use Exact Hash-Table Allocation Accounting in GroupValuesColumn

Status: Open.

#25736 In apache/datafusion;

· kosiew opened on Sep 25, 2026

Use Exact Hash-Table Allocation Accounting in GroupValuesRows

Status: Open.

#25735 In apache/datafusion;

· kosiew opened on Sep 25, 2026

Use Exact Hash-Table Allocation Accounting in GroupValuesPrimitive

Status: Open.

#25734 In apache/datafusion;

· kosiew opened on Sep 25, 2026

Substrait consumer rejects multi-needle InPredicate for row-valued IN subqueries

Status: Open.

#25720 In apache/datafusion;

· benbellick opened on Sep 24, 2026

FFI_ExecutionPlan::new silently discards transparent wrapper nodes

bugSomething isn't workingSomething isn't working

ffiChanges to the ffi crateChanges to the ffi crate

Status: Open.

#25717 In apache/datafusion;

· timsaucer opened on Sep 24, 2026

Chained CollectLeft hash joins multiply StringView buffer references (TPC-DS Q64: 8.5 GB, ~10x slower with pushdown_filters)

Status: Open.

#25712 In apache/datafusion;

· adriangb opened on Sep 24, 2026

Decorrelate subqueries whose grouping sets leave out the correlated column

enhancementNew feature or requestNew feature or request

Status: Open.

#25708 In apache/datafusion;

· jayzhan211 opened on Sep 24, 2026

EliminateCrossJoin drops NullEqualsNull from nested inner joins

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#25704 In apache/datafusion;

· neilconway opened on Sep 24, 2026

trunc(x) on a column turns -0.0 into 0.0

Status: Open.

#25702 In apache/datafusion;

· jonasdedden opened on Sep 24, 2026

NestedLoopJoinExec memory-limited fallback returns an empty result (wrong count = 0) instead of spilling or erroring

Status: Open.

#25701 In apache/datafusion;

· hosseinsha opened on Sep 24, 2026

Improve documentation for StatisticsRegistry, ExtendedStatistics, and StatisticsContext::compute_extended

Status: Open.

#25698 In apache/datafusion;

· asolimando opened on Sep 24, 2026