Issues

• Add an EXPLAIN option that shows each physical plan node's orderings, equal expressions and constants

  enhancement
  apache/datafusion#27429 · Filter by author jayzhan211 opened on Nov 14, 2026
  3

• FFI_ExecutionPlan loses input distribution and ordering requirements, so optimizer rules across FFI produce invalid plans

  bugregression
  apache/datafusion#27427 · Filter by author andygrove opened on Nov 14, 2026
  1

  

• SQL unparser emits empty filtered-count SELECT lists and out-of-scope qualifiers for filtered LIMIT

  apache/datafusion#27426 · Filter by author geoHeil opened on Nov 14, 2026

• Comparing or adding an integer to a Decimal32/Decimal64 value casts the decimal to Int64 and drops its fraction

  bug
  apache/datafusion#27424 · Filter by author jayzhan211 opened on Nov 14, 2026
  1

  

• Wrong results: ORDER BY on MAX/MIN over a sliding window frame is skipped

  bug
  apache/datafusion#27422 · Filter by author jayzhan211 opened on Nov 14, 2026
  1

  

• EquivalenceGroup::exprs_equal ignores operators on BinaryExpr

  bug
  Bug

  apache/datafusion#27419 · Filter by author galaxytemple opened on Nov 14, 2026
  1

  

• Projecting the same volatile expression twice creates a false equivalence and breaks ORDER BY

  bug
  Bug

  apache/datafusion#27418 · Filter by author galaxytemple opened on Nov 14, 2026

• Row group pruning with collect_statistics = true is still lost when the predicate has a non-prunable term (follow-up to #24769)

  apache/datafusion#27415 · Filter by author jensholdgaard opened on Nov 14, 2026

• CaseExpr::nullable evaluates WHEN conditions: volatile ones make nullability random, ones with columns build an error per batch

  apache/datafusion#27411 · Filter by author ranflarion opened on Nov 13, 2026

• bench.sh cannot generate TPC-H data with tpchgen-cli 4.0

  bug
  Bug

  apache/datafusion#27406 · Filter by author mbutrovich opened on Nov 13, 2026
  2

• Internal error when two aggregates share an IS TRUE / IS FALSE / IS UNKNOWN argument on a nullable column

  bug
  Bug

  apache/datafusion#27404 · Filter by author leoyvens opened on Nov 13, 2026
  1

• Window functions: bulk evaluation of frames and of runs of small partitions in BoundedWindowAggExec (measured prototype)

  apache/datafusion#27400 · Filter by author Sunninsky opened on Nov 13, 2026

• Implement contiguous match storage for Hash Join indexing

  apache/datafusion#27398 · Filter by author 2010YOUY01 opened on Nov 13, 2026

• first_value / last_value of a struct with a Utf8View field is quadratic in the number of groups

  apache/datafusion#27390 · Filter by author cetra3 opened on Nov 13, 2026

• A FULL or LEFT hash join whose probe side gives no row emits its unmatched build rows as one batch, ignoring batch_size

  bug
  Bug

  apache/datafusion#27379 · Filter by author ndscoder opened on Nov 12, 2026
  1

  

• Avoid casting run-end encoded Utf8 columns in LIKE / ILIKE

  apache/datafusion#27376 · Filter by author asubiotto opened on Nov 12, 2026

• simplify_expressions misoptimizes +0.0 vs -0.0 literal equality/inequality conjunctions via ScalarValue::PartialEq

  apache/datafusion#27365 · Filter by author xgbtxy opened on Nov 12, 2026
  2

• Remove deprecated aggregate_functional_dependencies

  apache/datafusion#27364 · Filter by author asolimando opened on Nov 12, 2026
  1

  

• Partial aggregation stops skipping after early emits under memory pressure

  bug
  apache/datafusion#27350 · Filter by author comphead opened on Nov 12, 2026
  

• Move SparkOptions and enable_ansi_mode from datafusion-common to datafusion-spark

  enhancementspark
  apache/datafusion#27342 · Filter by author andygrove opened on Nov 11, 2026
  4

• Comparing a DOUBLE with a DECIMAL casts the DOUBLE to Decimal128(30, 15), which fails on large values and NaN and truncates small ones

  bug
  apache/datafusion#27335 · Filter by author andygrove opened on Nov 11, 2026

• Unparser emits empty SELECT list for empty Projection nodes, ignoring supports_empty_select_list

  apache/datafusion#27332 · Filter by author dreverri opened on Nov 11, 2026

• Call for real world benchmarks / use cases

  apache/datafusion#27330 · Filter by author alamb opened on Nov 11, 2026
  1

• Scalar subquery in a VALUES row fails with "Internal error: ScalarSubqueryExpr evaluated before the subquery was executed"

  bug
  Bug

  apache/datafusion#27328 · Filter by author v28k opened on Nov 11, 2026

• Parquet protobuf decoder panics on an out-of-bounds projection index

  apache/datafusion#27327 · Filter by author geoHeil opened on Nov 11, 2026
  1