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Use <code>u32</code> or <code>i32</code> consistently for ByteView length

Status: Open.

#9371 In apache/arrow-rs;

· alamb opened on Feb 6, 2026

Error "Not all children array length are the same!" when decoding <code>MapArray</code> from parquet file when using <code>RowSelection</code>

bug

Status: Open.

#9370 In apache/arrow-rs;

· jonded94 opened on Feb 6, 2026

Panic when concatenating some dictionary arrays with u8 keys and 256 total values

bug

Status: Open.

#9366 In apache/arrow-rs;

· JakeDern opened on Feb 5, 2026

Optimize <code>from_bitwise_unary_op</code>

enhancementAny new improvement worthy of a entry in the changelogAny new improvement worthy of a entry in the changelog

Status: Open.

#9364 In apache/arrow-rs;

· Dandandan opened on Feb 5, 2026

Support <code>RunEndEncoded</code> in ord comparator

enhancementAny new improvement worthy of a entry in the changelogAny new improvement worthy of a entry in the changelog

Status: Open.

#9360 In apache/arrow-rs;

· Jefffrey opened on Feb 5, 2026

Support <code>RunEndEncoded</code> arrays in <code>arrow-json</code>

enhancementAny new improvement worthy of a entry in the changelogAny new improvement worthy of a entry in the changelog

Status: Open.

#9359 In apache/arrow-rs;

· Jefffrey opened on Feb 5, 2026

Add fuzz regression testing to parquet/arrow/csv readers

enhancementAny new improvement worthy of a entry in the changelogAny new improvement worthy of a entry in the changelog

Status: Open.

#9358 In apache/arrow-rs;

· alamb opened on Feb 5, 2026

Split up Parquet async reader tests

enhancementAny new improvement worthy of a entry in the changelogAny new improvement worthy of a entry in the changelog

Status: Open.

#9348 In apache/arrow-rs;

· sdf-jkl opened on Feb 3, 2026

Support roundtrip <code>ListView</code> in parquet arrow writer

enhancementAny new improvement worthy of a entry in the changelogAny new improvement worthy of a entry in the changelog

Status: Open.

#9344 In apache/arrow-rs;

· Jefffrey opened on Feb 3, 2026

Add native <code>ListView</code> support for <code>interleave</code> kernel

enhancementAny new improvement worthy of a entry in the changelogAny new improvement worthy of a entry in the changelog

Status: Open.

#9342 In apache/arrow-rs;

· Jefffrey opened on Feb 3, 2026

Support <code>ListView</code> in arrow-json

enhancementAny new improvement worthy of a entry in the changelogAny new improvement worthy of a entry in the changelog

Status: Open.

#9340 In apache/arrow-rs;

· Jefffrey opened on Feb 3, 2026

Refactor list -&gt; fixedsizelist cast to use <code>take</code> instead of <code>MutableArraydata</code>

enhancementAny new improvement worthy of a entry in the changelogAny new improvement worthy of a entry in the changelog

performance

Status: Open.

#9339 In apache/arrow-rs;

· Jefffrey opened on Feb 3, 2026