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https://issues.apache.org/jira/browse/SPARK-34307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-34307:
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Assignee: (was: Apache Spark)
> TakeOrderedAndProjectExec avoid shuffle if input rdd has single partition
> -------------------------------------------------------------------------
>
> Key: SPARK-34307
> URL: https://issues.apache.org/jira/browse/SPARK-34307
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: zhengruifeng
> Priority: Minor
>
> existing impl collects local topKs to a final partition by a
> ShuffleExchangeExec,
> when the input is small and has only one partition, this shuffle can be
> skipped.
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