Repository navigation

Issues

[DISCUSSION] 2026 Q3-Q4 Roadmap Discussion
#22882 · alamb opened on Jun 10, 2026
9

Use zizmor to harden actions workflows
Feature
apache/datafusion#26408 · opened on Oct 16, 2026
Migrate workflows away from pull_request_target
apache/datafusion#26406 · opened on Oct 16, 2026
ProjectionPushdown fails on a nested-loop join whose lambda captures a column from the other input
apache/datafusion#26396 · opened on Oct 16, 2026
coerce_int96 does not coerce INT96 inside legacy Parquet list layouts (bag/array, two-level lists)
apache/datafusion#26393 · opened on Oct 15, 2026
SanityCheckPlan error: a constant sort key is lost when a projection reads a duplicate alias
apache/datafusion#26391 · opened on Oct 15, 2026
1
translate panics when output would exceed 2GB
Bug
apache/datafusion#26388 · opened on Oct 15, 2026
CrossJoinExec buffers the entire left input without spilling (OOM under memory pressure)
apache/datafusion#26383 · opened on Oct 15, 2026
1
PartitionedTopKExec keeps whole Utf8View input buffers alive for the rows it retains
Bug
apache/datafusion#26381 · opened on Oct 15, 2026
Substrait producer does not support LogicalPlan::Unnest
apache/datafusion#26372 · opened on Oct 15, 2026
Extend fully ordered aggregation to temporal, decimal, and fixed-size binary keys
apache/datafusion#26369 · opened on Oct 15, 2026
Window referencing a named window with an added frame, OVER (w ROWS ...), silently drops PARTITION BY and ORDER BY
apache/datafusion#26364 · opened on Oct 15, 2026
Piecewise merge join: semi/anti joins fail with an internal error on RunEndEncoded keys
Bug
apache/datafusion#26363 · opened on Oct 15, 2026
Validate Parquet INT96 timezone values when configuration is assigned
apache/datafusion#26362 · opened on Oct 15, 2026
1
Refactor HashJoinExec by splitting regular/existence join into dedicated streams
Feature
apache/datafusion#26361 · opened on Oct 15, 2026
Physical CastExpr display hides nullability changes, so union coercion casts look like no-ops
apache/datafusion#26358 · opened on Oct 15, 2026
Memory limit test smj_with_mem_limit_1 is flaky
apache/datafusion#26354 · opened on Oct 15, 2026
Optimize inner joins with a proven single constant row into Filter/Projection
apache/datafusion#26349 · opened on Oct 15, 2026
Add a GroupsAccumulator for array_agg(DISTINCT)
apache/datafusion#26347 · opened on Oct 15, 2026
Planning fails with "Conflicting types" when one placeholder is inferred with two types
apache/datafusion#26343 · opened on Oct 15, 2026
2
array_repeat fails for array inputs with nonnullable elements
Bug
apache/datafusion#26342 · opened on Oct 14, 2026
[Bug] parse_url raises on a malformed URL when ANSI mode is off, Spark returns NULL
apache/datafusion#26341 · opened on Oct 14, 2026
[Bug] unbase64 rejects input that Spark's MIME decoder accepts
apache/datafusion#26340 · opened on Oct 14, 2026
[Bug] last_day, monthname, weekday, round and unbase64 reject arguments that Spark implicitly casts
apache/datafusion#26339 · opened on Oct 14, 2026
[Bug] trunc and date_trunc handle unsupported, NULL and non-literal formats differently from Spark
apache/datafusion#26338 · opened on Oct 14, 2026
[Bug] format_string prints the unscaled value for %s of a DECIMAL and strips trailing zeros for %g
apache/datafusion#26337 · opened on Oct 14, 2026