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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2022/08/03 12:42:05 UTC
[GitHub] [spark] ulysses-you opened a new pull request, #37397: [SPARK-39867][SQL][3.2] Global limit should not inherit OrderPreservingUnaryNode
ulysses-you opened a new pull request, #37397:
URL: https://github.com/apache/spark/pull/37397
backport branch-3.2 for https://github.com/apache/spark/pull/37284
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Make GlobalLimit inherit UnaryNode rather than OrderPreservingUnaryNode
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Global limit can not promise the output ordering is same with child, it actually depend on the certain physical plan.
For all physical plan with gobal limits:
- CollectLimitExec: it does not promise output ordering
- GlobalLimitExec: it required all tuples so it can assume the child is shuffle or child is single partition. Then it can use output ordering of child
- TakeOrderedAndProjectExec: it do sort inside it's implementation
This bug get worse since we pull out v1 write require ordering.
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yes, bug fix
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fix test and add test
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[GitHub] [spark] cloud-fan closed pull request #37397: [SPARK-39867][SQL][3.2] Global limit should not inherit OrderPreservingUnaryNode
Posted by GitBox <gi...@apache.org>.
cloud-fan closed pull request #37397: [SPARK-39867][SQL][3.2] Global limit should not inherit OrderPreservingUnaryNode
URL: https://github.com/apache/spark/pull/37397
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[GitHub] [spark] cloud-fan commented on pull request #37397: [SPARK-39867][SQL][3.2] Global limit should not inherit OrderPreservingUnaryNode
Posted by GitBox <gi...@apache.org>.
cloud-fan commented on PR #37397:
URL: https://github.com/apache/spark/pull/37397#issuecomment-1206290710
The failed python style check is not related to this PR. merging to 3.2, thanks!
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[GitHub] [spark] ulysses-you commented on pull request #37397: [SPARK-39867][SQL][3.2] Global limit should not inherit OrderPreservingUnaryNode
Posted by GitBox <gi...@apache.org>.
ulysses-you commented on PR #37397:
URL: https://github.com/apache/spark/pull/37397#issuecomment-1205941747
cc @viirya @cloud-fan
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