Issues

• Partial aggregate over fully sorted input fails with ResourcesExhausted instead of emitting completed groups

  bug
  apache/datafusion#26575 · Filter by author comphead opened on Oct 21, 2026

• = ANY (subquery) in a JOIN ... ON over an aliased table fails: "No field named x.a"

  bug
  Bug

  apache/datafusion#26573 · Filter by author alpaylan opened on Oct 21, 2026

• Regression: ORDER BY col, (scalar subquery) LIMIT over a RIGHT JOIN fails in SanityCheckPlan

  bug
  Bug

  apache/datafusion#26572 · Filter by author alpaylan opened on Oct 21, 2026

• Multi-key null-aware join silently defaults to one NOT IN value key

  bug
  apache/datafusion#26569 · Filter by author jayzhan211 opened on Oct 21, 2026

• Null-aware anti join keeps rows whose dictionary build key points at a NULL value

  bug
  apache/datafusion#26568 · Filter by author jayzhan211 opened on Oct 21, 2026
  1

  

• Identify the plan node that owns each MemoryConsumer

  enhancement
  apache/datafusion#26566 · Filter by author adriangb opened on Oct 21, 2026

• Allow coerce_primitives in JsonSource

  enhancement
  Feature

  apache/datafusion#26560 · Filter by author ion-elgreco opened on Oct 21, 2026

• Make datafusion-ffi a plain rlib by moving the cdylib integration tests into their own crate

  enhancement
  Feature

  apache/datafusion#26559 · Filter by author jprochazk opened on Oct 21, 2026

• Security audit CI failing: RUSTSEC-2026-0382 (rustls-webpki) and RUSTSEC-2026-0383 (webpki-root-certs)

  apache/datafusion#26549 · Filter by author yashaggarwal85d opened on Oct 21, 2026
  1

  

• Wrong results: a filter on a constant column keeps the row of an aggregate without GROUP BY

  apache/datafusion#26545 · Filter by author ameyypawar opened on Oct 20, 2026
  1

• Simplify IN lists containing NULL literals under filter semantics in EliminateFilter

  enhancement
  apache/datafusion#26542 · Filter by author alamb opened on Oct 20, 2026
  1

  

• BoundedWindowAggExec has a high fixed cost per partition when partitions are small

  enhancementperformance
  apache/datafusion#26541 · Filter by author comphead opened on Oct 20, 2026
  

• FIRST_VALUE, LAST_VALUE and NTH_VALUE build a ScalarValue for every row

  enhancementperformance
  apache/datafusion#26540 · Filter by author comphead opened on Oct 20, 2026
  

• LAST_VALUE and NTH_VALUE with IGNORE NULLS keep the whole partition buffered

  performance
  apache/datafusion#26539 · Filter by author comphead opened on Oct 20, 2026
  

• NTH_VALUE(expr, -n) IGNORE NULLS is quadratic in the partition size

  performance
  apache/datafusion#26538 · Filter by author comphead opened on Oct 20, 2026
  

• Memoize LAST_VALUE and NTH_VALUE with IGNORE NULLS so BoundedWindowAggExec can prune its buffer

  apache/datafusion#26537 · Filter by author comphead opened on Oct 20, 2026
  

• LAST_VALUE ... IGNORE NULLS is quadratic in the partition size

  performance
  apache/datafusion#26532 · Filter by author comphead opened on Oct 20, 2026

• Parquet binary_as_string expands RLE dictionaries before rebuilding them

  apache/datafusion#26530 · Filter by author Rich-T-kid opened on Oct 20, 2026

• TRY_CAST rejects valid struct casts at planning time

  bug
  Bug

  apache/datafusion#26528 · Filter by author ahlag opened on Oct 20, 2026
  1

  

• [EPIC] Variant on DataFusion

  enhancement
  Feature

  apache/datafusion#26517 · Filter by author raghuvanshraj opened on Oct 20, 2026
  3

• optimize_projections fails with "No field named ..." after propagate_empty_relation removes the first branch of a UNION

  apache/datafusion#26516 · Filter by author moraistejerina opened on Oct 20, 2026

• CSV ESCAPE option is used when reading but ignored when writing: INSERT/COPY files cannot be read back with the same options (rows merged, backslashes dropped)

  bug
  Bug

  apache/datafusion#26514 · Filter by author hanke580 opened on Oct 20, 2026
  1

• Amortize state compaction in DistinctArrayAggGroupsAccumulator on EmitTo::First

  apache/datafusion#26512 · Filter by author zhuqi-lucas opened on Oct 20, 2026
  

• SQLite parser dialect returns different rows for bitwise filter than SQLite

  apache/datafusion#26511 · Filter by author pbottine opened on Oct 20, 2026

• partitioning: store start and end bounds in Partitioning::Range

  enhancement
  Feature

  apache/datafusion#26509 · Filter by author jayshrivastava opened on Oct 19, 2026
  1