Issues

• [Parquet] ALP expands high-entropy float columns instead of compressing them, with no raw fallback

  apache/arrow-rs#11985 · Filter by author Abdallah-Afifi opened on Oct 29, 2026
  1

• FilterPredicate may compute the mask that is not used by downstream filtering

  enhancement
  Feature

  apache/arrow-rs#11983 · Filter by author mzabaluev opened on Oct 29, 2026

• [Discuss] Mac testing on fork branches keeps failing

  apache/arrow-rs#11976 · Filter by author etseidl opened on Oct 28, 2026
  1

  

• Consolidate Bloom filter parsing

  enhancement
  Feature

  apache/arrow-rs#11974 · Filter by author etseidl opened on Oct 28, 2026
  

• Upgrade to pyo3 0.30.x

  enhancement
  Feature

  apache/arrow-rs#11964 · Filter by author heiseish opened on Oct 28, 2026

• arrow-avro: schema resolution ignores the enclosing namespace when comparing record, enum and fixed names

  apache/arrow-rs#11960 · Filter by author linliu-code opened on Oct 28, 2026
  1

• arrow-avro: schema resolution maps by-name union branches to the first reader branch, misaligning the decode

  apache/arrow-rs#11958 · Filter by author linliu-code opened on Oct 28, 2026

• Remove standalone APIs deprecated before the last three major releases

  api-change
  apache/arrow-rs#11956 · Filter by author Rich-T-kid opened on Oct 28, 2026

• parquet: decode_metadata reserves memory from unvalidated footer counts (row groups, num_children)

  bug
  Bug

  apache/arrow-rs#11954 · Filter by author kandarpck opened on Oct 28, 2026

• [Variant] Move VariantType from parquet-variant-compute to parquet-variant

  enhancement
  apache/arrow-rs#11952 · Filter by author sdf-jkl opened on Oct 27, 2026

• [Variant] Infer a shredding schema from sampled values

  enhancement
  apache/arrow-rs#11951 · Filter by author sdf-jkl opened on Oct 27, 2026

• [Variant] Configure explicit shredding when writing Parquet

  enhancement
  apache/arrow-rs#11950 · Filter by author sdf-jkl opened on Oct 27, 2026

• [Variant] Strict cast_to_variant silently overwrites duplicate object keys

  bug
  apache/arrow-rs#11948 · Filter by author sdf-jkl opened on Oct 27, 2026

• [Variant] cast_to_variant silently drops null struct fields and map entries

  bug
  apache/arrow-rs#11947 · Filter by author sdf-jkl opened on Oct 27, 2026

• [Variant] cast_to_variant accepts unsupported types for empty and all-null arrays

  bug
  apache/arrow-rs#11946 · Filter by author sdf-jkl opened on Oct 27, 2026

• [Variant] Support a time zone when serializing Variant timestamps to JSON

  enhancement
  apache/arrow-rs#11945 · Filter by author sdf-jkl opened on Oct 27, 2026

• ArrayData validation panics on a buffer with trailing bytes that are not a whole number of elements

  apache/arrow-rs#11943 · Filter by author vntoinekaio opened on Oct 27, 2026

• [Variant] cast_to_variant serializes nested Variant storage as ordinary objects

  bug
  apache/arrow-rs#11942 · Filter by author sdf-jkl opened on Oct 27, 2026

• [coalesce] Build dictionary output across value mappings without take or concat

  apache/arrow-rs#11941 · Filter by author Rich-T-kid opened on Oct 27, 2026

• [coalesce] Add specialized DictionaryArray path for push_batch_with_indices

  apache/arrow-rs#11940 · Filter by author Rich-T-kid opened on Oct 27, 2026
  1

  

• [Variant] Safe cast_to_variant failures produce Variant null instead of Arrow null

  bug
  apache/arrow-rs#11939 · Filter by author sdf-jkl opened on Oct 27, 2026

• [Variant] Validate storage fields in VariantType

  bug
  apache/arrow-rs#11938 · Filter by author sdf-jkl opened on Oct 27, 2026

• [Variant] Support UUID conversion in cast_to_variant

  enhancement
  apache/arrow-rs#11937 · Filter by author sdf-jkl opened on Oct 27, 2026

• Avoid materializing dense Boolean filters in BatchCoalescer

  apache/arrow-rs#11921 · Filter by author Rich-T-kid opened on Oct 26, 2026

• Avoid temporary Boolean buffers when filtering in BatchCoalescer

  apache/arrow-rs#11920 · Filter by author Rich-T-kid opened on Oct 26, 2026