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Arrow ipc format supports deduplication of dictionaries with dict_id, but there is no way to exercise it

Component: C++

Type: enhancement

Status: Open.

#49646 In apache/arrow;

· cooldome opened on Apr 2, 2026

[Python] Support converting list of multi-dimensional arrays to FixedShapeTensor

Component: Python

Type: enhancement

Status: Open.

#49644 In apache/arrow;

· jorisvandenbossche opened on Apr 2, 2026

[Python] S3FileSystem ignores AWS_ENDPOINT_URL / AWS_ENDPOINT_URL_S3 environment variables

Component: Python

Type: bug

Status: Open.

#49643 In apache/arrow;

· mohan-armada opened on Apr 2, 2026

[C++] Lz4HadoopCodec::Compress writes single oversized block incompatible with Hadoop Lz4Decompressor

Component: C++

Status: Open.

#49641 In apache/arrow;

· clee704 opened on Apr 2, 2026

[Python][C++] pyarrow._compute Contains AVX Instructions During Import

CI: Extra: C++Run extra C++ CIRun extra C++ CI

Component: Python

Type: bug

Status: Open.

#49640 In apache/arrow;

· Alvaro-Kothe opened on Apr 1, 2026

[Python] Environment variables for PyArrow not needed anymore

Component: Python

Type: enhancement

Status: Open.

#49636 In apache/arrow;

· AlenkaF opened on Apr 1, 2026

[Python][Interchange protocol] Deprecate the dataframe interchange protocol on PyArrow

Component: Python

Type: enhancement

Status: Open.

#49629 In apache/arrow;

· AlenkaF opened on Apr 1, 2026

[Python][Interchange protocol] Suppress warnings for pandas 4.0.0 and update docs

Component: Python

Type: enhancement

Status: Open.

#49628 In apache/arrow;

· AlenkaF opened on Apr 1, 2026

·  

24.0.0

[C++] arrow::util::base64_decode silently truncates on invalid characters instead of reporting an error

Component: C++

Type: bug

Status: Open.

#49614 In apache/arrow;

· dmitry-chirkov-dremio opened on Mar 28, 2026

[Python] DataFrame row-wise .loc assignment is much slower with string_storage="pyarrow" than "python"

Component: Python

Type: bug

Status: Open.

#49612 In apache/arrow;

· aoli-al opened on Mar 28, 2026

[MATLAB][CI] MATLAB workflow failing due to action permission error

Component: Continuous Integration

Component: MATLAB

Type: bug

Status: Open.

#49611 In apache/arrow;

· sgilmore10 opened on Mar 27, 2026

[R] Add AGENTS.md file to R package

Component: R

Type: enhancement

Status: Open.

#49607 In apache/arrow;

· thisisnic opened on Mar 27, 2026