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[FEA][Story] Support ingest of Parquet VARIANT columns

cuIOcuIO issuecuIO issue

feature requestNew feature or requestNew feature or request

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

PythonAffects Python cuDF API.Affects Python cuDF API.

Status: Open.

#22312 In rapidsai/cudf;

· vuule opened on Apr 27, 2026

[BUG] Root cause and fix flaky failures in Polars CI runs due to the rapidsmpf transition

bugSomething isn't workingSomething isn't working

cudf-polarsIssues specific to cudf-polarsIssues specific to cudf-polars

Status: Open.

#22307 In rapidsai/cudf;

· vyasr opened on Apr 27, 2026

[BUG] Dictionary encoding silently corrupts string columns in Parquet writer at row group boundaries

bugSomething isn't workingSomething isn't working

Status: Open.

#22299 In rapidsai/cudf;

· zhangzixuen opened on Apr 25, 2026

[BUG] Use-after-scope race in contiguous_copy_column_device_views / create_device_view_from_view after switch to pinned staging

Status: Open.

#22284 In rapidsai/cudf;

· thirtiseven opened on Apr 24, 2026

[FEA][Java][JNI] Support multi-input aggregations without requiring a struct-column wrapper

feature requestNew feature or requestNew feature or request

JavaAffects Java cuDF API.Affects Java cuDF API.

SparkFunctionality that helps Spark RAPIDSFunctionality that helps Spark RAPIDS

Status: Open.

Enhancement

#22276 In rapidsai/cudf;

· ttnghia opened on Apr 23, 2026

[FEA] Add Java bindings for the hybrid scan parquet reader

feature requestNew feature or requestNew feature or request

Status: Open.

#22271 In rapidsai/cudf;

· GregoryKimball opened on Apr 23, 2026

[Story] Adopt new streaming engines in cudf-polars and remove legacy cluster API

Status: Open.

Task

#22268 In rapidsai/cudf;

· madsbk opened on Apr 23, 2026

Lower cudf-polars query plan on workers

cudf-polarsIssues specific to cudf-polarsIssues specific to cudf-polars

Status: Open.

#22251 In rapidsai/cudf;

· TomAugspurger opened on Apr 22, 2026

[BUG] Q67 OOMs

bugSomething isn't workingSomething isn't working

Status: Open.

#22235 In rapidsai/cudf;

· Matt711 opened on Apr 21, 2026

[BUG] Q66 Segmentation Fault with 8 GPUs

bugSomething isn't workingSomething isn't working

Status: Open.

#22234 In rapidsai/cudf;

· Matt711 opened on Apr 21, 2026

[BUG] Q26 OOMs with UCX Error then hangs

bugSomething isn't workingSomething isn't working

Status: Open.

#22233 In rapidsai/cudf;

· Matt711 opened on Apr 21, 2026

[BUG]: pyarrow 24 compatibility

bugSomething isn't workingSomething isn't working

PythonAffects Python cuDF API.Affects Python cuDF API.

Status: Open.

#22229 In rapidsai/cudf;

· TomAugspurger opened on Apr 21, 2026