Issues

• [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

• [Variant] Parquet writer omits specification_version on the VARIANT logical type

  apache/arrow-rs#11917 · Filter by author raghuvanshraj opened on Oct 26, 2026

• Speed up reading FIXED_LEN_BYTE_ARRAY decimals in the parquet arrow reader

  apache/arrow-rs#11908 · Filter by author yihua opened on Oct 25, 2026
  2

• data: MutableArrayData::try_with_capacities should avoid allocating a null bitmap when possible

  bug
  Bug

  apache/arrow-rs#11902 · Filter by author Jefffrey opened on Oct 25, 2026

• RowConverter encodes every dictionary value for each batch, not just the values its rows reference

  enhancement
  apache/arrow-rs#11901 · Filter by author jayzhan211 opened on Oct 25, 2026

• replace more mutablebuffer callsites with fallible methods

  enhancement
  Feature

  apache/arrow-rs#11900 · Filter by author Jefffrey opened on Oct 25, 2026
  3

  

• Specialize BatchCoalescer for ListArray and LargeListArray

  apache/arrow-rs#11898 · Filter by author Rich-T-kid opened on Oct 25, 2026

• Parquet: Allow disabling Bloom filter folding for parquet-java compatibility

  apache/arrow-rs#11891 · Filter by author NikitaMatskevich opened on Oct 24, 2026

• Release process: should we have both sha256 and sha512?

  development-process
  apache/arrow-rs#11890 · Filter by author Jefffrey opened on Oct 24, 2026

• Release arrow-rs / parquet Major version 62.0.0 (March 2027)

  apache/arrow-rs#11888 · Filter by author Jefffrey opened on Oct 24, 2026