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[BUG] read_json: nested struct type mismatch keeps parent struct populated; Spark expects parent NULL

bugSomething isn't workingSomething isn't working

Status: Open.

#22423 In rapidsai/cudf;

· wjxiz1992 opened on May 8, 2026

[BUG] to_numpy(dtype=object) coerces None -> pandas.NA

bugSomething isn't workingSomething isn't working

Status: Open.

#22419 In rapidsai/cudf;

· jcrist opened on May 7, 2026

[FEA] Extend SUM_WITH_OVERFLOW reduction to signed integers and decimals

feature requestNew feature or requestNew feature or request

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

Status: Open.

#22413 In rapidsai/cudf;

· PointKernel opened on May 7, 2026

[FEA] cudf-polars test suite CLI arguments for NUM_RANKS and allow_gpu_sharing

feature requestNew feature or requestNew feature or request

Status: Open.

#22407 In rapidsai/cudf;

· madsbk opened on May 7, 2026

[BUG] over(...) inside .filter() fallback reorders rows on multi-rank streaming engines

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#22405 In rapidsai/cudf;

· madsbk opened on May 7, 2026

[FEA] [Java] Deprecate the use of Aggregation64Utils in favour of cudf::SUM_WITH_OVERFLOW

feature requestNew feature or requestNew feature or request

Status: Open.

#22403 In rapidsai/cudf;

· mythrocks opened on May 6, 2026

[FEA] Rename build/probe to right/left across join APIs

feature requestNew feature or requestNew feature or request

Status: Open.

#22400 In rapidsai/cudf;

· PointKernel opened on May 6, 2026

[FEA] JNI bindings for SUM_WITH_OVERFLOW aggregation

feature requestNew feature or requestNew feature or request

JavaAffects Java cuDF API.Affects Java cuDF API.

Status: Open.

#22398 In rapidsai/cudf;

· mythrocks opened on May 6, 2026

MERGE_M2 returns NaN when first partial has an extreme finite mean

bugSomething isn't workingSomething isn't working

libcudfAffects libcudf (C++/CUDA) code.Affects libcudf (C++/CUDA) code.

Needs TriageNeed team to review and classifyNeed team to review and classify

Status: Open.

#22391 In rapidsai/cudf;

· wjxiz1992 opened on May 6, 2026

[BUG] cudf-polars error in a MIG sandbox

bugSomething isn't workingSomething isn't working

Status: Open.

#22388 In rapidsai/cudf;

· mlubin opened on May 6, 2026

[BUG] cudf-polars thread-offload uses hardware-determined number of threads

bugSomething isn't workingSomething isn't working

Status: Open.

#22379 In rapidsai/cudf;

· wence- opened on May 5, 2026

[BUG][cudf-polars] Multi-rank Union (and pl.concat) interleaves child outputs across ranks, breaking row order

bugSomething isn't workingSomething isn't working

Status: Open.

#22376 In rapidsai/cudf;

· madsbk opened on May 5, 2026