Apache Arrow 26.0.1 (3 November 2026)

This is a patch release covering around 1 month of development.

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Contributors

This release includes 24 commits from 14 distinct contributors.

$ git shortlog -sn apache-arrow-26.0.0..apache-arrow-26.0.1
     7	Raúl Cumplido
     3	Sutou Kouhei
     2	Curt Hagenlocher
     2	Krisztián Szűcs
     1	Abdul Rawoof Khan
     1	Antoine Pitrou
     1	Bryce Mecum
     1	Divjot Arora
     1	Hanayoshi-8744
     1	Nic Crane
     1	Robert Kruszewski
     1	autoCAT
     1	tadeja
     1	water

Patch Committers

The following Apache committers merged contributed patches to the repository.

$ git shortlog -sn --group=trailer:signed-off-by apache-arrow-26.0.0..apache-arrow-26.0.1
     8	Sutou Kouhei
     4	Raúl Cumplido
     2	Antoine Pitrou
     1	Adam Reeve
     1	Nic Crane
     1	Rok Mihevc
     1	Zehua Zou

Changelog

Bug Fixes

GH-51018 - [C++] Fix indices_nonzero segfault on chunkless ChunkedArray (#51021)
GH-51669 - [C++][Parquet] Preserve cipher in plaintext footer metadata (#54884)
GH-51684 - [C++][Parquet][FOLLOWUP] Speed up content-defined chunking with a local gear hash (#51692)
GH-51684 - [C++][Parquet] Keep the CDC chunking state across row groups (#51685)
GH-51690 - [C++] Don't define SSE2 globally with MSVC (#53952)
GH-51751 - [CI][Packaging] Fix formula path for homebrew-cpp job (#51756)
GH-53518 - [Parquet] Reject unsupported compression codecs (#53522)
GH-54489 - [CI][Integration] Install jpype1 from conda-forge in conda-integration image (#54490)
GH-54595 - [Packaging] Revert the unnecessary commit for https://github.com/apache/arrow/issues/54595
GH-54595 - [Packaging][CI] Fix regex on update_deb_package_names to cover the 3 on libarrow_s3 (#54608)
GH-54928 - [Packaging][CI] Change TMPDIR for reproducible builds to avoid out of space (#54943)
GH-54936 - [C++] Ensure reading an invalid map array from IPC doesn't crash (#54939)
GH-55112 - [Packaging][Debian] Add missing opentelemetry-cpp dependency (#55249)
GH-55113 - [CI][R] Install tzdata-legacy if available so tests are able to find required timezones (#55114)
GH-55165 - [C++][Packaging][R] Use Brotli 1.2.1 for bundled, vcpkg and R Windows builds (#55167)
GH-55267 - [C++][R] Arrow 26.0.0 fails to build on CRAN macOS builders: bundled simdjson C++20 concepts don't compile with the macOS 11 SDK (#55273)
GH-55316 - [CI][FlightRPC][ODBC] Apply ports.patch in Windows build (#55317)

New Features and Improvements

GH-50544 - [C++][Gandiva] Fix out-of-bounds read in round with most negative precision (#50545)
GH-51354 - [C++][Parquet] Update bundled Apache Thrift to 0.24.0 (#51559)
GH-51817 - [Dev][Release] Add support for RC curl in download_rc_binaries.py (#51818)
GH-52161 - [C++][Parquet] Add support for string/binary view to content defined chunking writer (#52162)