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Posted to issues@spark.apache.org by "Yifan Xing (Jira)" <ji...@apache.org> on 2019/09/23 21:14:00 UTC
[jira] [Commented] (SPARK-28845) Enable
spark.sql.execution.sortBeforeRepartition only for retried stages
[ https://issues.apache.org/jira/browse/SPARK-28845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16936194#comment-16936194 ]
Yifan Xing commented on SPARK-28845:
------------------------------------
Can you please clarify what do you mean by "before repartition config"?
> Enable spark.sql.execution.sortBeforeRepartition only for retried stages
> ------------------------------------------------------------------------
>
> Key: SPARK-28845
> URL: https://issues.apache.org/jira/browse/SPARK-28845
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core, SQL
> Affects Versions: 3.0.0
> Reporter: Yuanjian Li
> Priority: Major
>
> For fixing the correctness bug of SPARK-28699, we disable radix sort for the scenario of repartition in Spark SQL. This will cause a performance regression.
> So for limiting the performance overhead, we'll do the optimizing work by only enable sort before repartition config for the retried stage. This work depends on SPARK-25341.
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