[SPARK-38124][SS][FOLLOWUP] Add test to harden assumption of SS partitioning requirement #35529
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c21
commented
Feb 15, 2022
| case x => fail(s"Unexpected partitionIdExpression $x for $hashPartitioning") | ||
| } | ||
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| // Validate only HashPartitioning (and HashPartitioning in PartitioningCollection) can satisfy |
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Covered all subclasses of Partitioning here, except DataSourcePartitioning, because DataSourcePartitioning is not accessible from this unit test.
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cc @cloud-fan, @sunchao, @viirya, @HyukjinKwon and @HeartSaVioR, thanks. |
HeartSaVioR
approved these changes
Feb 15, 2022
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Thanks! Merging to master. |
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Thank you all for review! |
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What changes were proposed in this pull request?
This is a followup of #35419 (comment), to add unit test to harden the assumption of SS partitioning and distribution requirement:
HashPartitioning.partitionIdExpressionto be exactly expected formatPartitioningagainstStatefulOpClusteredDistribution.Also add a minor comment for
StatefulOpClusteredDistribution, asSinglePartitioncan also satisfy the distribution.Why are the changes needed?
Document our assumption of SS in code as unit test.
So next time when we introduce intrusive code change, the unit test can save us by failing loudly.
Does this PR introduce any user-facing change?
No.
How was this patch tested?
The added unit test itself.