Issues

• [AI-AUDIT] CPU ArrowEvalPythonExec over GpuBringBackToHost closes host batches twice after SPARK-60306

  ? - Needs Triageaudit_5.0.0bug
  NVIDIA/cudf-spark#16760 · Filter by author jihoonson opened on Nov 5, 2026

• [BUG] Crash with GPU execution and DefaultCachedBatchSerializer

  ? - Needs Triagebug
  NVIDIA/cudf-spark#16757 · Filter by author revans2 opened on Nov 5, 2026

• [BUG] A GPU merge count with no GROUP BY returns null when its input is only empty batches

  ? - Needs Triagebug
  Bug

  NVIDIA/cudf-spark#16756 · Filter by author amahussein opened on Nov 5, 2026

• [BUG] submodule-sync build fails: histogram.cu calls cudf::detail::label_segments with outdated signature

  ? - Needs Triagebot_watchbug
  NVIDIA/cudf-spark#16755 · Filter by author revans2 opened on Nov 5, 2026
  1

• Separate driverless join inputs from broadcast exchange control

  ? - Needs Triagefeature request
  NVIDIA/cudf-spark#16754 · Filter by author binmahone opened on Nov 5, 2026

• Evaluate scalable distribution for driverless broadcast builds

  ? - Needs Triagefeature request
  NVIDIA/cudf-spark#16753 · Filter by author binmahone opened on Nov 5, 2026

• Qualify driverless broadcast for broader production use

  ? - Needs Triagefeature request
  NVIDIA/cudf-spark#16752 · Filter by author binmahone opened on Nov 5, 2026

• [BUG] Split policies are not told why a split was requested, so host memory pressure splits GPU-only work

  ? - Needs Triagebug
  NVIDIA/cudf-spark#16751 · Filter by author thirtiseven opened on Nov 5, 2026
  

• [FEA] Release the GPU semaphore while GpuRowToColumnarExec pulls rows from its CPU child

  ? - Needs Triagefeature requestperformance
  NVIDIA/cudf-spark#16746 · Filter by author thirtiseven opened on Nov 5, 2026

• [FEA] Stopgap for #13918: slice scan batches so input_file_name() cannot overflow the 2 GiB string limit

  feature request
  NVIDIA/cudf-spark#16743 · Filter by author gerashegalov opened on Nov 5, 2026
  

• [BUG] Nested loop join fails on the GPU when part of its condition throws on rows Spark never evaluates

  ? - Needs Triagebug
  Bug

  NVIDIA/cudf-spark#16742 · Filter by author amahussein opened on Nov 5, 2026

• [BUG] Existence join with no build-side columns fails the task on a retry OOM

  ? - Needs Triagebug
  NVIDIA/cudf-spark#16741 · Filter by author amahussein opened on Nov 5, 2026

• [FEA] Standardize metric assertions in Python integration tests

  ? - Needs Triagefeature request
  NVIDIA/cudf-spark#16739 · Filter by author revans2 opened on Nov 4, 2026

• [BUG] UCX server sends no reply to a metadata request whose receive failed

  ? - Needs Triagebugshuffle
  Bug

  NVIDIA/cudf-spark#16736 · Filter by author amahussein opened on Nov 4, 2026

• [BUG] Widespread native SIGSEGV during ORC and Parquet reads

  ? - Needs Triagebot_watchbug
  NVIDIA/cudf-spark#16734 · Filter by author pxLi opened on Nov 4, 2026
  8

• [BUG] CORRECTED/EXCEPTION timestamp parsing returns null for signed and extended years on GPU

  ? - Needs Triagebug
  NVIDIA/cudf-spark#16731 · Filter by author thirtiseven opened on Nov 4, 2026

• [BUG] Follow up on shim-source generation and selector coverage after #16595

  NVIDIA/cudf-spark#16730 · Filter by author gerashegalov opened on Nov 4, 2026
  

• [AI-AUDIT] GpuUnionExec does not mirror PartitioningCollection intersection and attribute normalization (SPARK-58317, SPARK-58819)

  audit_4.3.0audit_5.0.0bugSpark 5.0+
  NVIDIA/cudf-spark#16729 · Filter by author firestarman opened on Nov 4, 2026

• [FEA] Allow Parquet dictionary filtering to reuse pluggable positional-read I/O

  ? - Needs Triagefeature request
  NVIDIA/cudf-spark#16725 · Filter by author nvliyuan opened on Nov 3, 2026

• [BUG] CUDA invalid resource handle during GPU Parquet decoding with 26.12 snapshots

  ? - Needs Triagebot_watchbug
  NVIDIA/cudf-spark#16721 · Filter by author yinqingh opened on Nov 3, 2026
  1

  

• [BUG] CORRECTED yyyy/MM/dd accepts single digit month/day on GPU

  ? - Needs Triagebug
  NVIDIA/cudf-spark#16718 · Filter by author res-life opened on Nov 3, 2026
  

• [BUG] RowToColumnarIterator over-reserves host memory from batchSizeBytes and holds it under memory pressure

  ? - Needs Triagebug
  NVIDIA/cudf-spark#16714 · Filter by author thirtiseven opened on Nov 3, 2026
  

• [AI-AUDIT] Support DECIMAL128 output in GpuMakeDecimal (Spark 4.3+/5.0 DecimalAggregates widened-Cast SUM peel falls back to CPU)

  ? - Needs Triageauditaudit_4.3.0audit_5.0.0
  NVIDIA/cudf-spark#16708 · Filter by author tgravescs opened on Nov 2, 2026

• [AI-AUDIT] GPU MERGE MergeSummary row counts overcount on stage retries (SPARK-56743 SQLLastAttemptMetric parity)

  ? - Needs Triageauditaudit_4.2.0audit_5.0.0
  NVIDIA/cudf-spark#16707 · Filter by author tgravescs opened on Nov 2, 2026

• Investigate UCX version for 26-12

  Task

  NVIDIA/cudf-spark#16703 · Filter by author amahussein opened on Nov 2, 2026