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Preserve source bounds in widening integer casts with safe interval-bound handling

enhancementNew feature or requestNew feature or request

Status: Open.

Feature

#25407 In apache/datafusion;

· haohuaijin opened on Sep 17, 2026

Release consumed sort input batches after partial output

enhancementNew feature or requestNew feature or request

Status: Open.

#25405 In apache/datafusion;

· Weijun-H opened on Sep 17, 2026

Order-insensitive aggregates with an ORDER BY fail in grouped queries (min/max schema mismatch, avg/bit_*/stddev/var panic)

Status: Open.

#25401 In apache/datafusion;

· hassaanch23 opened on Sep 17, 2026

Duplicate expression in an ordered aggregate's ORDER BY panics (first_last.rs:602 assertion) or fails with an internal Arrow error

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#25398 In apache/datafusion;

· hanke580 opened on Sep 17, 2026

Serialize LazyMemoryExec / GenerateSeries through a generator-level proto hook

Status: Open.

#25395 In apache/datafusion;

· adriangb opened on Sep 17, 2026

Replacing an AggregateExec's aggregate expressions keeps state derived from the old ones

bugSomething isn't workingSomething isn't working

Status: Open.

#25394 In apache/datafusion;

· adriangb opened on Sep 17, 2026

Reject a limit an AggregateExec cannot execute when the plan is built

enhancementNew feature or requestNew feature or request

Status: Open.

#25393 In apache/datafusion;

· adriangb opened on Sep 17, 2026

Reduce generic hash join bucket allocation for low-cardinality build keys

Status: Open.

#25392 In apache/datafusion;

· sunchao opened on Sep 16, 2026

Window sort pushdown below LIMIT/OFFSET prevents early termination

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#25378 In apache/datafusion;

· AdamGS opened on Sep 16, 2026

Spark aggregate functions do not report distinct_handling

Status: Open.

#25375 In apache/datafusion;

· mkleen opened on Sep 16, 2026

ForeignAggregateUDF does not forward distinct handling

Status: Open.

#25374 In apache/datafusion;

· mkleen opened on Sep 16, 2026

Internal error: CSE-extracted __common_expr_1 has mismatched nullability between logical and physical plans when the expression is under an aggregate

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#25369 In apache/datafusion;

· hanke580 opened on Sep 16, 2026