Issues

• Redesign column and column view APIs to use cuda::device_buffer<T> and cudf::device_span<T>

  Enhancement

  NVIDIA/cudf#24431 · Filter by author KyleFromNVIDIA opened on Oct 2, 2026
  1

• [BUG] read_parquet_footers rejects valid mixed-schema Parquet files

  NVIDIA/cudf#24423 · Filter by author praateekmahajan opened on Oct 2, 2026

• [FEA] Support LazyFrame.sink_batches in cudf-polars

  cudf-polarsfeature request
  NVIDIA/cudf#24412 · Filter by author rjzamora opened on Oct 1, 2026

• [FEA]: Improve observability of spilling in cudf-polars

  cudf-polars
  NVIDIA/cudf#24403 · Filter by author TomAugspurger opened on Oct 1, 2026

• [FEA]: Improve observability of memory reservations in cudf-polars

  cudf-polars
  NVIDIA/cudf#24402 · Filter by author TomAugspurger opened on Oct 1, 2026

• [FEA]: Track inter-rank transfers for cudf-polars with Quent

  cudf-polars
  NVIDIA/cudf#24401 · Filter by author TomAugspurger opened on Oct 1, 2026

• [Story]: cudf-polars observability improvements

  cudf-polars
  NVIDIA/cudf#24400 · Filter by author TomAugspurger opened on Oct 1, 2026
  

• [BUG] Comparison operators keep nulls while str predicates fill them, on the same string dtype

  NVIDIA/cudf#24393 · Filter by author a-hirota opened on Oct 1, 2026

• [BUG] Series.str.cat(sep=...) emits a trailing separator when trailing elements are null

  buglibcudf
  NVIDIA/cudf#24392 · Filter by author a-hirota opened on Oct 1, 2026
  2

  

• [BUG] Parquet reader returns NUL-filled DELTA_BYTE_ARRAY strings when the file has a page index

  ? - Needs Triagebug
  NVIDIA/cudf#24389 · Filter by author qbacpey opened on Oct 1, 2026

• [FEA] Lift benchmark context capturing out of runner scripts

  cudf.pandascudf-polarsfeature request
  NVIDIA/cudf#24381 · Filter by author mroeschke opened on Sep 30, 2026

• [FEA] Move internal integer utilities from cudf::util to cudf::detail

  improvement
  NVIDIA/cudf#24373 · Filter by author PointKernel opened on Sep 30, 2026
  1

• [FEA] Replace custom cuDF utilities with CCCL equivalents

  improvementlibcudf
  NVIDIA/cudf#24371 · Filter by author PointKernel opened on Sep 30, 2026

• Reenable IWYU

  NVIDIA/cudf#24369 · Filter by author vyasr opened on Sep 30, 2026

• [BUG] pylibcudf ParquetReaderOptions.set_filter does not keep the filter expression alive

  ? - Needs Triagebug
  NVIDIA/cudf#24354 · Filter by author mhaseeb123 opened on Sep 30, 2026 · Parquet continuous improvement

• [FEA] Replace SFINAE in libcudf with C++20 concepts

  ? - Needs Triagefeature requestlibcudf
  NVIDIA/cudf#24341 · Filter by author vuule opened on Sep 29, 2026
  4

• [BUG] ORC reader applies the first stripe's writer timezone to every stripe

  ? - Needs Triagebuglibcudf
  NVIDIA/cudf#24315 · Filter by author vuule opened on Sep 29, 2026

• [BUG] read_parquet ignores prefetch_options={"method": "parquet"} for remote files

  NVIDIA/cudf#24313 · Filter by author Arthur031221 opened on Sep 28, 2026

• [BUG] Negative timedeltas: astype(str) output and string parsing disagree with pandas

  NVIDIA/cudf#24298 · Filter by author Arthur031221 opened on Sep 27, 2026

• [BUG] Parquet Snappy decompression can consume uninitialized padded input bytes after RMM pool reuse

  ? - Needs Triagebug
  NVIDIA/cudf#24274 · Filter by author matal-nvidia opened on Sep 23, 2026

• [FEA] Top-down migration plan: cudf::memory_resources in every public API, in dependency order

  improvementlibcudf
  NVIDIA/cudf#24268 · Filter by author devin-ai-integration opened on Sep 23, 2026

• [FEA] Support polars.scan_delta/iceberg in cudf-polars

  cudf-polars
  NVIDIA/cudf#24247 · Filter by author mroeschke opened on Sep 21, 2026

• [BUG] CUDA compiler warning for CUDF_HOST_DEVICE on constexpr variables

  ? - Needs Triagebug
  NVIDIA/cudf#24238 · Filter by author bdice opened on Sep 20, 2026
  4

• [FEA] Support outer null checks for Array columns in cudf-polars

  ? - Needs Triagefeature request
  NVIDIA/cudf#24235 · Filter by author 0guban0v opened on Sep 19, 2026

• [BUG] Ambiguous union_member::get overloads with GCC 16 break ORC/Parquet writer builds

  NVIDIA/cudf#24233 · Filter by author karthikeyann opened on Sep 18, 2026