Issues

• [BUG] DBR 17.3 managed saveAsTable leaves the V1 append wrapper on CPU

  ? - Needs Triagebug
  NVIDIA/cudf-spark#16358 · Filter by author wjxiz1992 opened on Oct 15, 2026
  

• [FEA] Update AGENTS.md to encourage reusing datagen framework when writing integration test.

  feature request
  NVIDIA/cudf-spark#16355 · Filter by author liurenjie1024 opened on Oct 15, 2026
  

• [FEA] Support GPU Parquet execution for Delta server-side planned scans

  feature request
  NVIDIA/cudf-spark#16349 · Filter by author sdrp713 opened on Oct 14, 2026
  

• [FEA][DBR 18.3] Enable and validate Java 21 builds

  feature request
  NVIDIA/cudf-spark#16347 · Filter by author nartal1 opened on Oct 14, 2026

• [BUG] Spark 4.1+ shuffle checksums never cover GPU shuffles, despite a logged fallback that never happens

  ? - Needs Triagebugshuffle
  Bug

  NVIDIA/cudf-spark#16345 · Filter by author amahussein opened on Oct 14, 2026

• [FEA] Make the shuffle smoke tests check which shuffle code ran

  feature requestshuffletest
  NVIDIA/cudf-spark#16343 · Filter by author amahussein opened on Oct 14, 2026

• [FEA] Add deterministic path-character tests across data formats and storage backends

  ? - Needs Triagefeature requesttest
  NVIDIA/cudf-spark#16340 · Filter by author gerashegalov opened on Oct 14, 2026

• [FEA] Remove the CACHE_ONLY shuffle mode

  ? - Needs Triagefeature requestshuffletech debt
  NVIDIA/cudf-spark#16339 · Filter by author amahussein opened on Oct 14, 2026

• [BUG] SpillFramework disk-spill tests ignore compression, encryption, and path parameters

  ? - Needs TriageAI Reportedbugtest
  NVIDIA/cudf-spark#16334 · Filter by author thirtiseven opened on Oct 14, 2026

• [BUG] Closing a handle during a failed spill can leak its resource and poison future spill plans

  ? - Needs TriageAI Reportedbugreliability
  NVIDIA/cudf-spark#16333 · Filter by author thirtiseven opened on Oct 14, 2026

• [BUG] Match Spark CORRECTED CSV DateType parsing on GPU

  ? - Needs Triagebug
  NVIDIA/cudf-spark#16332 · Filter by author res-life opened on Oct 14, 2026

• [FEA] Support low shuffle discovery row indexes in all DBR 17.3 native DV readers

  ? - Needs Triagedeltafeature request
  NVIDIA/cudf-spark#16323 · Filter by author liurenjie1024 opened on Oct 14, 2026

• How should CuDF-Spark executor native-memory overhead be attributed and sized?

  ? - Needs Triagequestion
  NVIDIA/cudf-spark#16321 · Filter by author WangGuangxin opened on Oct 14, 2026

• [BUG] Iceberg S3Tables test_iceberg_read_metadata_columns_with_partition_evolution[MULTITHREADED] exceeds 3600s Spark job timeout, cascading to stopped SparkContext failures

  ? - Needs Triagebot_watchbug
  NVIDIA/cudf-spark#16320 · Filter by author pxLi opened on Oct 14, 2026

• [FEA] Support of databricks unity catalog.

  ? - Needs Triagefeature request
  NVIDIA/cudf-spark#16318 · Filter by author liurenjie1024 opened on Oct 14, 2026

• [FEA][DBR 18.3] Enable pre-merge integration tests and remove temporary CI guards

  NVIDIA/cudf-spark#16317 · Filter by author nartal1 opened on Oct 14, 2026

• [BUG][DBR 18.3] Delta array schema-evolution write omits canMergeSchema in commitInfo

  bug
  NVIDIA/cudf-spark#16315 · Filter by author nartal1 opened on Oct 13, 2026

• [BUG][DBR 18.3] Delta MERGE schema evolution fails with a cuDF concatenate type mismatch

  bug
  NVIDIA/cudf-spark#16314 · Filter by author nartal1 opened on Oct 13, 2026

• [BUG][DBR 18.3] Clustered Delta OPTIMIZE log comparison fails on LIQUID_METADATA_ID

  bug
  NVIDIA/cudf-spark#16313 · Filter by author nartal1 opened on Oct 13, 2026

• [BUG][DBR 18.3] Delta writes fail GPU overrides on non-columnar plan nodes

  ? - Needs Triagebug
  NVIDIA/cudf-spark#16312 · Filter by author nartal1 opened on Oct 13, 2026

• [FEA] Make collect_plan_nodes descend into AQE stages so plan-checking tests can run with AQE on

  ? - Needs Triagefeature request
  NVIDIA/cudf-spark#16310 · Filter by author amahussein opened on Oct 13, 2026
  

• [TASK] A failed UCX shuffle transfer surfaces as a timeout

  shuffletask
  Task

  NVIDIA/cudf-spark#16308 · Filter by author amahussein opened on Oct 13, 2026
  1

  

• [BUG] PCBS throws NPE on null elements in nested types

  bug
  NVIDIA/cudf-spark#16307 · Filter by author amahussein opened on Oct 13, 2026
  

• [BUG] UCX nightly (Spark 3.3.0 standalone): 14 integration tests fail - 'thread not a dedicated task thread', 'ColumnVectors can't be null or empty', kudo dump path missing

  bot_watchbug
  NVIDIA/cudf-spark#16300 · Filter by author amahussein opened on Oct 13, 2026
  1

  

• [FEA][DBR 18.3] Benchmark RAPIDS performance on Databricks Runtime 18.3

  performance
  NVIDIA/cudf-spark#16290 · Filter by author nartal1 opened on Oct 13, 2026