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Posted to issues@spark.apache.org by "ulysses you (Jira)" <ji...@apache.org> on 2021/04/08 14:24:00 UTC

[jira] [Created] (SPARK-34991) Mark GlobalLimit outputPartitioning as SinglePartition

ulysses you created SPARK-34991:
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             Summary: Mark GlobalLimit outputPartitioning as SinglePartition
                 Key: SPARK-34991
                 URL: https://issues.apache.org/jira/browse/SPARK-34991
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.2.0
            Reporter: ulysses you


Accroding to the semantics of `GlobalLimitExec`,  the outputPartitioning should always be `SinglePartition`.  And we can avoid unnecessary shuffle.



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