apache/datafusion-comet
View on GitHubApache DataFusion Comet Spark Accelerator
- Stars
- 1.3k
- Forks
- 375
- Open beginner issues
- 0
- Indexed issues
- 542
- Avg merge
- 2d 4h
- Merged PRs (30d)
- 198
- Dominant language
- Scala
- License
- Apache-2.0
- Last GitHub push
- Sep 15, 2026
- Latest indexed
- Sep 14, 2026
- Contributing guide
- Contributing guide
- Code of conduct
- Code of conduct
- Beginner labels
- good first issue help wanted
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area:expressions documentation enhancement
apache/datafusion-comet#5578 · 1 comment · 0 reactions · 1 assignee ·
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Map lookups with float, collated or complex keys fall back to Spark (`map_col[key]`, `element_at`) Openarea:expressions enhancement map expressions
apache/datafusion-comet#5580 · 1 comment · 0 reactions · 1 assignee ·
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Hash functions fall back to Spark for decimal precision > 18, and `sha2` for a non-literal `numBits` Openarea:expressions enhancement performance
apache/datafusion-comet#5581 · 1 comment · 0 reactions · 1 assignee ·
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Array functions fall back to Spark for binary and struct element types (`ArraysBase` type gate) Openarea:expressions array expressions enhancement
apache/datafusion-comet#5582 · 1 comment · 0 reactions · 1 assignee ·
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area:expressions array expressions enhancement
apache/datafusion-comet#5583 · 1 comment · 0 reactions · 1 assignee ·
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area:expressions enhancement good first issue
apache/datafusion-comet#5584 · 1 comment · 0 reactions · 1 assignee ·
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area:expressions enhancement good first issue
apache/datafusion-comet#5585 · 1 comment · 0 reactions · 1 assignee ·
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area:expressions enhancement good first issue
apache/datafusion-comet#5586 · 1 comment · 0 reactions · 1 assignee ·
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area:expressions enhancement temporal expressions
apache/datafusion-comet#5588 · 1 comment · 0 reactions · 1 assignee ·
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`map_from_arrays` falls back to Spark under `mapKeyDedupPolicy=LAST_WIN`, unlike `map_from_entries` Openarea:expressions enhancement map expressions
apache/datafusion-comet#5589 · 1 comment · 0 reactions · 1 assignee ·
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area:expressions enhancement map expressions spark 4.0
apache/datafusion-comet#5590 · 1 comment · 0 reactions · 1 assignee ·
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area:udf enhancement
apache/datafusion-comet#5596 · 0 comments · 0 reactions · 0 assignees ·
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Derive a native UDF's return type from the library instead of requiring the caller to declare it Openarea:udf enhancement
apache/datafusion-comet#5597 · 0 comments · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5601 · 0 comments · 0 reactions · 0 assignees ·
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enhancement performance requires-triage
apache/datafusion-comet#5616 · 0 comments · 0 reactions · 0 assignees ·
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enhancement performance requires-triage
apache/datafusion-comet#5625 · 0 comments · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5633 · 0 comments · 0 reactions · 1 assignee ·
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bug requires-triage
apache/datafusion-comet#5637 · 0 comments · 0 reactions · 0 assignees ·
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apache/datafusion-comet#5639 · 6 comments · 0 reactions · 1 assignee ·
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area:Iceberg area:writer enhancement requires-triage
apache/datafusion-comet#5643 · 1 comment · 1 reaction · 0 assignees ·
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area:ci area:Iceberg area:writer enhancement requires-triage
apache/datafusion-comet#5644 · 0 comments · 0 reactions · 0 assignees ·
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area:Iceberg enhancement requires-triage
apache/datafusion-comet#5645 · 0 comments · 0 reactions · 0 assignees ·
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area:Iceberg area:writer enhancement requires-triage
apache/datafusion-comet#5646 · 0 comments · 0 reactions · 0 assignees ·
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area:Iceberg area:writer enhancement requires-triage
apache/datafusion-comet#5647 · 0 comments · 0 reactions · 0 assignees ·
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area:Iceberg area:writer enhancement requires-triage
apache/datafusion-comet#5648 · 0 comments · 0 reactions · 0 assignees ·
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area:Iceberg area:writer EPIC requires-triage
apache/datafusion-comet#5649 · 2 comments · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5655 · 1 comment · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5656 · 1 comment · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5657 · 0 comments · 0 reactions · 0 assignees ·
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Move cloud compatibility gating into a shared helper beside the object store configuration code Openrequires-triage
apache/datafusion-comet#5658 · 0 comments · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5659 · 0 comments · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5660 · 0 comments · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5661 · 0 comments · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5662 · 0 comments · 0 reactions · 0 assignees ·
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enhancement requires-triage
apache/datafusion-comet#5678 · 0 comments · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5686 · 2 comments · 0 reactions · 1 assignee ·
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array_distinct and array_union diverge from Spark on -0.0 for Spark versions without SPARK-54918 Openarea:expressions bug correctness priority:high requires-triage
apache/datafusion-comet#5701 · 2 comments · 0 reactions · 1 assignee ·
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area:expressions priority:low requires-triage test
apache/datafusion-comet#5702 · 1 comment · 0 reactions · 0 assignees ·
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area:aggregation priority:medium requires-triage test
apache/datafusion-comet#5703 · 2 comments · 0 reactions · 0 assignees ·
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area:expressions enhancement priority:medium requires-triage
apache/datafusion-comet#5708 · 1 comment · 0 reactions · 0 assignees ·
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enhancement EPIC requires-triage
apache/datafusion-comet#5709 · 3 comments · 0 reactions · 0 assignees ·
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area:expressions enhancement performance requires-triage
apache/datafusion-comet#5710 · 0 comments · 0 reactions · 1 assignee ·
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area:ci good first issue
apache/datafusion-comet#5711 · 4 comments · 0 reactions · 1 assignee ·
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area:expressions documentation performance priority:medium requires-triage test
apache/datafusion-comet#5712 · 0 comments · 1 reaction · 0 assignees ·
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bug requires-triage
apache/datafusion-comet#5719 · 1 comment · 0 reactions · 1 assignee ·
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requires-triage
apache/datafusion-comet#5731 · 0 comments · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5739 · 1 comment · 0 reactions · 1 assignee ·
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requires-triage
apache/datafusion-comet#5741 · 1 comment · 0 reactions · 1 assignee ·
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perf: skip calendar reconstruction in datetime extraction (hour/minute/second, dayofweek/weekday) Openrequires-triage
apache/datafusion-comet#5770 · 1 comment · 0 reactions · 0 assignees ·
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requires-triage
apache/datafusion-comet#5774 · 4 comments · 0 reactions · 1 assignee ·