Issues

• Custom DataSourceExec Observability

  apache/datafusion#27169 · Filter by author alexanderbianchi opened on Nov 6, 2026

• DELETE fails to resolve columns qualified by the target table alias

  apache/datafusion#27164 · Filter by author QuakeWang opened on Nov 6, 2026

• ORDER BY can return wrong results across individually sorted Parquet row groups

  apache/datafusion#27162 · Filter by author rank-p opened on Nov 6, 2026

• APPROX_MEDIAN with ORDER BY incorrectly treats the sort key as a percentile argument

  bug
  Bug

  apache/datafusion#27157 · Filter by author Phoenix500526 opened on Nov 6, 2026
  1

• Alias metadata may be lost when the physical expression is created

  bug
  Bug

  apache/datafusion#27156 · Filter by author paleolimbot opened on Nov 6, 2026
  1

  

• Expr::Not and PhysicalExpr::NotExpr have different metadata propagation rules

  bug
  Bug

  apache/datafusion#27155 · Filter by author paleolimbot opened on Nov 6, 2026

• Support GroupsAccumulator for unordered first_value

  enhancement
  Feature

  apache/datafusion#27149 · Filter by author rkrishn7 opened on Nov 6, 2026
  1

  

• Re-land Decimal filter selectivity estimation (#25790) without the TPC-H Q18 regression

  apache/datafusion#27146 · Filter by author asolimando opened on Nov 5, 2026
  3

  

• ListingTable reads a file name as a partition value when a partition directory level is missing

  bug
  Bug

  apache/datafusion#27134 · Filter by author mbutrovich opened on Nov 5, 2026
  2

  

• file_row_index()/input_file_name() error and get_field() loses pruning when their projection also contains a KeepInPlace expression

  apache/datafusion#27131 · Filter by author cool9850311 opened on Nov 5, 2026
  1

  

• Regression: short floating-point IN lists mishandle signed zero

  bug
  Bug

  apache/datafusion#27121 · Filter by author lonless9 opened on Nov 5, 2026
  1

  

• Incorrect regex-to-LIKE simplification for literal backslashes

  bug
  Bug

  apache/datafusion#27120 · Filter by author lonless9 opened on Nov 5, 2026
  4

  

• Aggregates with FILTER (WHERE ...) copy every input column once per aggregate

  enhancementperformance
  apache/datafusion#27114 · Filter by author xudong963 opened on Nov 5, 2026
  

• Wrong results: an aggregate over a primary key and another column is treated as unique on the key

  apache/datafusion#27112 · Filter by author asolimando opened on Nov 4, 2026
  1

  

• Support disabling output batch coalescing in HashJoinExec (and LimitedBatchCoalescer)

  apache/datafusion#27109 · Filter by author stuhood opened on Nov 4, 2026
  3

• ensure ranges with different bounds can satisfy each other

  apache/datafusion#27106 · Filter by author jayshrivastava opened on Nov 4, 2026

• [DISCUSSION] How should we test datafusion-spark against Spark?

  spark
  apache/datafusion#27103 · Filter by author andygrove opened on Nov 4, 2026
  13

• Poor parallel scaling for window queries over timestamps with time zones

  apache/datafusion#27101 · Filter by author akupchinskiy opened on Nov 4, 2026

• UPDATE accepts more than one assignment to the same column

  bug
  apache/datafusion#27096 · Filter by author kumarUjjawal opened on Nov 4, 2026
  1

• Comparison of an integer with a wide decimal fails: common decimal type caps precision but keeps scale

  bug
  apache/datafusion#27095 · Filter by author kumarUjjawal opened on Nov 4, 2026
  1

  

• PostgreSQL dialect: unary minus binds more loosely than ^, so -1 ^ 0 returns -1

  bug
  apache/datafusion#27094 · Filter by author kumarUjjawal opened on Nov 4, 2026
  1

• Reading a Variant column from Parquet files with different shredding layouts null-fills typed_value; every shredded field then reads as NULL, with no error

  apache/datafusion#27089 · Filter by author raghuvanshraj opened on Nov 4, 2026
  10

• SQL planner doesn't resolve dotted field access on lambda parameters

  apache/datafusion#27088 · Filter by author LiaCastaneda opened on Nov 4, 2026

• Reduce repeated work across filtered aggregates

  enhancement
  Feature

  apache/datafusion#27085 · Filter by author yashrb24 opened on Nov 4, 2026
  1

  

• Recursive CTEs over Utf8View columns overcount shared buffers and exhaust the memory pool

  apache/datafusion#27083 · Filter by author akupchinskiy opened on Nov 4, 2026