[SPARK-35853][SQL] Remark the shuffle origin to ENSURE_REQUIREMENTS as far as possible #33015
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What changes were proposed in this pull request?
Add a rule
RemarkShuffleOrigin
in AQE queryStagePreparationRules after EnsureRequirements.Why are the changes needed?
In some queries, we might repartition by some columns with a large partition number manually to make parallelism big enough. However if its output partitioning satisfies some other node (e.g. join/aggregate), this shuffle can not be optimized by AQE due to the shuffle origin.
So, this new rule aims to remark the shuffle origin to
ENSURE_REQUIREMENTS
as far as possible if it's safe.Does this PR introduce any user-facing change?
yes, the plan may be changed
How was this patch tested?
Add test.