[opt](filescan) Reuse external scan tasks within a statement - #66530

Merged

924060929 merged 19 commits into

apache:masterfrom

924060929:fix/cir-21262-typed-scan-reuse-key

Sep 21, 2026

Commits on Sep 20, 2026

[improvement](fe) Use typed keys with structural equals for scan reuse
924060929
committed
721d33e
[improvement](fe) Keep scan plan reuse keys backward compatible
924060929
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854378f
[fix](filescan) Preserve zero-pruned scan identity
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296287b
[test](filescan) Cover statement scan reuse behavior
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7443e98
[test](filescan) Cover structural filter reuse
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3c8bcb2
[fix](fe) Release job task statement contexts
924060929
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7ef7db2
[fix](fe) Close every MTMV execution context
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7dcaf72
[fix](fe) Preserve MTMV refresh snapshot consistency
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9240b31
[fix](filescan) Add external split reuse switch
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bec6c88
[fix](filescan) Fix scan reuse compatibility and cleanup
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9b9d499
[fix](filescan) Guard scan reuse namespaces
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36c6898
[fix](filescan) Quiesce asynchronous split producers
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5169757
[fix](filescan) Bound asynchronous split cancellation
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429f6f6
[fix](filescan) Keep scan reuse changes scoped
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6db239b
[fix](filescan) Close task scan resources
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f2cf559
[refactor](fe) Centralize external scan reuse session policy
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1f4109d
[fix](filescan) Fence scan reuse to one table generation
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705054b
[fix](filescan) Avoid caching degraded external scan plans
924060929
committed
98f451d
[fix](paimon) Reuse fixed scan identities without live probes
924060929
committed
616b309

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[opt](filescan) Reuse external scan tasks within a statement - #66530

[opt](filescan) Reuse external scan tasks within a statement#66530
924060929 merged 19 commits into
apache:masterfrom
924060929:fix/cir-21262-typed-scan-reuse-key

Commits on Sep 20, 2026

[improvement](fe) Use typed keys with structural equals for scan reuse

[improvement](fe) Keep scan plan reuse keys backward compatible

[fix](filescan) Preserve zero-pruned scan identity

[test](filescan) Cover statement scan reuse behavior

[test](filescan) Cover structural filter reuse

[fix](fe) Release job task statement contexts

[fix](fe) Close every MTMV execution context

[fix](fe) Preserve MTMV refresh snapshot consistency

[fix](filescan) Add external split reuse switch

[fix](filescan) Fix scan reuse compatibility and cleanup

[fix](filescan) Guard scan reuse namespaces

[fix](filescan) Quiesce asynchronous split producers

[fix](filescan) Bound asynchronous split cancellation

[fix](filescan) Keep scan reuse changes scoped

[fix](filescan) Close task scan resources

[refactor](fe) Centralize external scan reuse session policy

[fix](filescan) Fence scan reuse to one table generation

[fix](filescan) Avoid caching degraded external scan plans

[fix](paimon) Reuse fixed scan identities without live probes