[SPARK-55535][SPARK-55092][SQL] Refactor `KeyGroupedPartitioning` and Storage Partition Join#54330

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peter-toth wants to merge 30 commits intoapache:masterfrom

peter-toth:SPARK-55535-refactor-kgp-and-spj

Commits on Feb 20, 2026

Replace `KeyGroupedPartitioning` with `KeyedPartitioning`, add new `GroupPartitionsExec` operator, remove old code
peter-toth
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Commits on Feb 21, 2026

Commits on Feb 25, 2026

Commits on Feb 26, 2026

partially clustered distribution no longer requires `canApplyPartialClusteredDistribution()` check as partition grouping happens right under the join, add granular grouping test
peter-toth
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more code cleanup and comments
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Commits on Feb 27, 2026

BatchScanExec code cleanup
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Commits on Mar 3, 2026

Commits on Mar 4, 2026

Commits on Mar 6, 2026

fix BroadcastDistribution in EnsureRequirements
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