Issues

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

  apache/datafusion#25712 · Filter by author adriangb opened on Sep 24, 2026
  2

  

• Decorrelate subqueries whose grouping sets leave out the correlated column

  enhancement
  apache/datafusion#25708 · Filter by author jayzhan211 opened on Sep 24, 2026
  7

  

• EliminateCrossJoin drops NullEqualsNull from nested inner joins

  bug
  Bug

  apache/datafusion#25704 · Filter by author neilconway opened on Sep 24, 2026
  

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

  apache/datafusion#25702 · Filter by author jonasdedden opened on Sep 24, 2026
  1

  

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

  apache/datafusion#25701 · Filter by author hosseinsha opened on Sep 24, 2026
  2

  

• Null-aware LeftMark joins miss logical NULLs in dictionary keys

  apache/datafusion#25691 · Filter by author viirya opened on Sep 24, 2026

• Aggregate UDF's hard ordering requirement is dropped when it has no reverse_expr

  apache/datafusion#25676 · Filter by author killme2008 opened on Sep 24, 2026

• Session-level SecretsStore extension point and CREATE SECRET / DROP SECRET support

  enhancement
  apache/datafusion#25662 · Filter by author alamb opened on Sep 23, 2026
  4

• Document and enforce compatibility of the intermediate state produced by an AggregateUDFImpl's Accumulator and GroupsAccumulator

  enhancement
  Feature

  apache/datafusion#25660 · Filter by author masonh22 opened on Sep 23, 2026

• Find a solution to prevent processes being OOM killed due to inaccurate memory accounting

  enhancement
  Feature

  apache/datafusion#25650 · Filter by author andygrove opened on Sep 23, 2026
  2

  

• OptimizeProjections does not set projection_beneficial for children of LogicalPlan::Extension

  apache/datafusion#25642 · Filter by author stuhood opened on Sep 23, 2026
  1

  

• [EPIC] Spilling coverage gaps vs Spark and DuckDB: window, cross join, and pool-driven reclaim

  enhancementEPIC
  apache/datafusion#25637 · Filter by author comphead opened on Sep 23, 2026
  1

• Redact credentials in object-store URL diagnostics

  apache/datafusion#25632 · Filter by author Toby1009 opened on Sep 22, 2026
  3

• Estimate equality to a scalar subquery without a blanket 20% fallback

  bug
  Bug

  apache/datafusion#25623 · Filter by author gabotechs opened on Sep 22, 2026
  10

  

• Propagate window ranking statistics into rank filters

  bug
  Bug

  apache/datafusion#25622 · Filter by author gabotechs opened on Sep 22, 2026
  2

• Estimate IN and NOT IN selectivity from the listed values

  bug
  Bug

  apache/datafusion#25621 · Filter by author gabotechs opened on Sep 22, 2026
  1

  

• Use null counts when estimating IS NULL and IS NOT NULL

  bug
  Bug

  apache/datafusion#25620 · Filter by author gabotechs opened on Sep 22, 2026
  

• Improve NDV estimates for sparse join keys

  bug
  Bug

  apache/datafusion#25618 · Filter by author gabotechs opened on Sep 22, 2026

• Avoid inferring full anti-join coverage from range bounds

  bug
  Bug

  apache/datafusion#25617 · Filter by author gabotechs opened on Sep 22, 2026

• Include residual predicates in join estimates

  bug
  Bug

  apache/datafusion#25616 · Filter by author gabotechs opened on Sep 22, 2026

• Propagate aggregate-result statistics into HAVING

  bug
  Bug

  apache/datafusion#25615 · Filter by author gabotechs opened on Sep 22, 2026
  1

  

• Distinguish string equality, LIKE and NOT LIKE estimates

  bug
  Bug

  apache/datafusion#25614 · Filter by author gabotechs opened on Sep 22, 2026

• Estimate Decimal filter selectivity

  bug
  Bug

  apache/datafusion#25613 · Filter by author gabotechs opened on Sep 22, 2026
  1

  

• Retain selectivity from supported AND conjuncts

  bug
  Bug

  apache/datafusion#25612 · Filter by author gabotechs opened on Sep 22, 2026
  1

  

• Estimate group counts without explicit NDVs

  bug
  Bug

  apache/datafusion#25611 · Filter by author gabotechs opened on Sep 22, 2026
  1