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[Python] Expose RecordBatchFileReader::CountRows in Python

Component: Python

Type: enhancement

Status: Open.

#49305 In apache/arrow;

· adrien-grl opened on Feb 17, 2026

[Python][Doc] Incorrect parameter descriptions in SparseCSCMatrix.from_numpy

Component: Documentation

Type: bug

Status: Open.

#49302 In apache/arrow;

· chilin0525 opened on Feb 17, 2026

[C++][Parquet] Integer overflow in Parquet dict decoding

Component: C++

Component: Parquet

Type: bug

Status: Open.

#49299 In apache/arrow;

· pitrou opened on Feb 16, 2026

[Python] test_memory.py fails with <code>-DARROW_MIMALLOC=OFF</code>

Component: Python

Type: enhancement

Status: Open.

#49295 In apache/arrow;

· kou opened on Feb 16, 2026

[Packaging][deb] Update <code>debian/watch</code> for version 5

Component: Packaging

Type: enhancement

Status: Open.

#49293 In apache/arrow;

· kou opened on Feb 16, 2026

[C++] Add support for armv8 and armv9

Component: C++

Type: enhancement

Status: Open.

#49292 In apache/arrow;

· kou opened on Feb 16, 2026

[C++] Change the C Type of HalfFloatType

Component: C++

Type: enhancement

Status: Open.

#49291 In apache/arrow;

· andishgar opened on Feb 16, 2026

[C++][ORC] Add OrcFileFragment with stripe-level subsetting

Component: C++

Type: enhancement

Status: Open.

#49288 In apache/arrow;

· ShreyeshArangath opened on Feb 15, 2026

[C++][R] Clean up macOS C++20 partial compatibility issues

Component: C++

Component: R

Type: bug

Status: Open.

#49287 In apache/arrow;

· jonkeane opened on Feb 14, 2026

[Python] RecordBatch.serialize() should support writing into a pre-allocated buffer

Component: Python

Type: enhancement

Status: Open.

#49285 In apache/arrow;

· rustyconover opened on Feb 14, 2026

[C++][FlightRPC] Add separate release &amp; debug workflows for MacOS ODBC

Component: C++

Component: FlightRPC

Type: enhancement

Status: Open.

#49283 In apache/arrow;

· justing-bq opened on Feb 13, 2026

[C++] Synthetic OOM tests are allocator-sensitive with mimalloc

Component: C++

Type: bug

Status: Open.

#49280 In apache/arrow;

· k8ika0s opened on Feb 13, 2026