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[C++] GZipCodec::Init does deflateInit and immediately throws it away

Status: Open.

#51308 In apache/arrow;

· lorenzhs opened

on Sep 11, 2026

[Python][JSON] Leading null list elements produce invalid list offsets during type inference

Status: Open.

#51305 In apache/arrow;

· behroozazarkhalili opened

on Sep 11, 2026

[C++][Parquet] Update parquet.thrift to sync with 2.14.0

Component: Parquet

Type: enhancement

Status: Open.

#51303 In apache/arrow;

· HuaHuaY opened

on Sep 11, 2026

[Python] Update pandas->pyarrow conversion for the .values deprecation in pandas

Component: Python

Status: Open.

#51302 In apache/arrow;

· jorisvandenbossche opened

on Sep 11, 2026

·

[Python] Fix deprecation warnings in the tests with numpy/pandas nightly

Component: Continuous Integration

Component: Python

Status: Open.

#51301 In apache/arrow;

· jorisvandenbossche opened

on Sep 11, 2026

·

[Python] Fix deprecation warnings for RankOptions null_placement in our own tests

Component: Python

Status: Open.

#51300 In apache/arrow;

· jorisvandenbossche opened

on Sep 11, 2026

[Dev] Fix SC2035 shellcheck errors in the cpp/src/arrow/vendored directory.

Component: Developer Tools

Type: enhancement

Status: Open.

#51297 In apache/arrow;

· hiroyuki-sato opened

on Sep 11, 2026

[Python] get_partition_keys segfaults when the partition expression is None

Component: Python

Status: Open.

#51293 In apache/arrow;

· 1fanwang opened

on Sep 10, 2026

[C++] Add iterator-based variants of bit-run visitors

good-second-issue

Type: enhancement

Status: Open.

#51289 In apache/arrow;

· pitrou opened

on Sep 10, 2026

[C++] Allow the CSV Reader to accept multi-character delimiters

Type: enhancement

Status: Open.

#51275 In apache/arrow;

· HuaHuaY opened

on Sep 10, 2026

[Ruby] Add `ArrowFormat::FixedSizeListArray.new(type, values)`

Component: Ruby

Status: Open.

#51273 In apache/arrow;

· emecii opened

on Sep 10, 2026

[C++][Parquet] Speed up DELTA_BINARY_PACKED decoding

Type: enhancement

Status: Open.

#51268 In apache/arrow;

· prtkgaur opened

on Sep 9, 2026