Issues

• Reuse hash_list_primitive! for string/binary list elements and factor out map-entry hashing loops

  area:expressionsenhancementgood first issuehelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6984 · Filter by author andygrove opened on Oct 14, 2026

• Extract shared list-array construction from the split_* functions in split.rs

  area:expressionsenhancementgood first issuehelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6983 · Filter by author andygrove opened on Oct 14, 2026

• Replace duplicated scalar/array broadcast match in math_funcs with a shared helper

  area:expressionsenhancementgood first issuehelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6982 · Filter by author andygrove opened on Oct 14, 2026

• Extract a variable-length slot writer from TypedElements::write_elements_slow in columnar_to_row.rs

  enhancementgood first issuehelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6981 · Filter by author andygrove opened on Oct 14, 2026

• Deduplicate ASCII and char paths in levenshtein_distance_with_threshold

  area:expressionsenhancementgood first issuehelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6980 · Filter by author andygrove opened on Oct 14, 2026

• [EPIC] Finish moving PhysicalPlanner::create_plan and create_expr onto the operator and expression registries

  enhancementEPIChelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6979 · Filter by author andygrove opened on Oct 14, 2026

• Share Parquet field-ID and name resolution between remap_physical_schema and match_struct_fields

  area:scanenhancementhelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6978 · Filter by author andygrove opened on Oct 14, 2026 · 1.2.0
  

• Deduplicate field-major struct append paths in shuffle spark_unsafe/row.rs

  area:shuffleenhancementhelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6977 · Filter by author andygrove opened on Oct 14, 2026

• Deduplicate Legacy/Ansi/Try integer SUM accumulators in sum_int.rs

  area:aggregationenhancementhelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6976 · Filter by author andygrove opened on Oct 14, 2026

• Extract a shared metrics-preserving exec wrapper from CometFilterExec and CometProjectionExec

  enhancementhelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6975 · Filter by author andygrove opened on Oct 14, 2026

• Deduplicate spark_ceil and spark_floor and port floor's decimal boundary tests to ceil

  area:expressionsenhancementhelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6974 · Filter by author andygrove opened on Oct 14, 2026

• Planner panics instead of returning errors for out-of-range Decimal128 list literals and unsupported ANSI binary operators

  bughelp wantedrequires-triagerusttech debt
  apache/datafusion-comet#6973 · Filter by author andygrove opened on Oct 14, 2026

• Native null short-circuit evaluates shared arguments eagerly when subexpression elimination is off

  requires-triage
  apache/datafusion-comet#6972 · Filter by author dwsmith1983 opened on Oct 14, 2026
  1

  

• JVM codegen dispatch skips a shared subexpression on NULL rows under ANSI

  requires-triage
  apache/datafusion-comet#6971 · Filter by author dwsmith1983 opened on Oct 14, 2026
  1

  

• Native element_at and map_from_arrays skip a shared subexpression on NULL rows under ANSI

  requires-triage
  apache/datafusion-comet#6970 · Filter by author dwsmith1983 opened on Oct 14, 2026
  2

  

• Pass a scan's Hadoop options to libhdfs

  requires-triage
  apache/datafusion-comet#6967 · Filter by author dwsmith1983 opened on Oct 14, 2026

• Native string to decimal cast returns zero or NULL where Spark's rescale throws ArithmeticException

  requires-triage
  apache/datafusion-comet#6966 · Filter by author viirya opened on Oct 14, 2026

• Label Delta pull requests with an area label

  requires-triage
  apache/datafusion-comet#6964 · Filter by author dwsmith1983 opened on Oct 14, 2026
  1

  

• Native Iceberg writes succeed for gzip with a numeric compression level and for brotli, where iceberg-java fails

  area:Icebergarea:writerbugpriority:mediumrequires-triage
  apache/datafusion-comet#6960 · Filter by author andygrove opened on Oct 14, 2026

• Native Iceberg writes: support uuid and unknown columns

  area:Icebergarea:writerenhancementrequires-triage
  apache/datafusion-comet#6959 · Filter by author andygrove opened on Oct 14, 2026

• Native Iceberg writes: support Azure and oss data locations, S3-compatible scheme aliases, and gs through HadoopFileIO

  area:Icebergarea:writerenhancementrequires-triage
  apache/datafusion-comet#6958 · Filter by author andygrove opened on Oct 14, 2026

• Native Iceberg writes: admit S3 settings that cannot change the written object, and translate S3 credential providers and encryption settings

  area:Icebergarea:writerenhancementrequires-triage
  apache/datafusion-comet#6957 · Filter by author andygrove opened on Oct 14, 2026

• Native Iceberg writes: support the object-storage layout (write.object-storage.enabled=true)

  area:Icebergarea:writerenhancementrequires-triage
  apache/datafusion-comet#6956 · Filter by author andygrove opened on Oct 14, 2026

• Native Iceberg writes: stop falling back on settings iceberg-java's writer ignores

  area:Icebergarea:writerenhancementrequires-triage
  apache/datafusion-comet#6955 · Filter by author andygrove opened on Oct 14, 2026

• Native Iceberg writes: translate the Parquet settings that have a parquet-rs equivalent

  area:Icebergarea:writerenhancementrequires-triage
  apache/datafusion-comet#6954 · Filter by author andygrove opened on Oct 14, 2026