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https://issues.apache.org/jira/browse/SPARK-29893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan updated SPARK-29893:
--------------------------------
Parent: (was: SPARK-28560)
Issue Type: Improvement (was: Sub-task)
> Improve the local reader performance by changing the task number from 1 to
> multi
> --------------------------------------------------------------------------------
>
> Key: SPARK-29893
> URL: https://issues.apache.org/jira/browse/SPARK-29893
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Ke Jia
> Assignee: Ke Jia
> Priority: Major
> Fix For: 3.0.0
>
>
> The currently local reader read all the partition of map stage only using 1
> task, which may cause the performance degradation. This PR will improve the
> performance by using multi tasks instead of one task.
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