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Posted to issues@spark.apache.org by "Dongjoon Hyun (JIRA)" <ji...@apache.org> on 2019/01/05 15:06:00 UTC
[jira] [Closed] (SPARK-26542) Support the coordinator to demerminte
post-shuffle partitions more reasonably
[ https://issues.apache.org/jira/browse/SPARK-26542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dongjoon Hyun closed SPARK-26542.
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> Support the coordinator to demerminte post-shuffle partitions more reasonably
> -----------------------------------------------------------------------------
>
> Key: SPARK-26542
> URL: https://issues.apache.org/jira/browse/SPARK-26542
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.3.2
> Reporter: chenliang
> Priority: Major
> Fix For: 2.3.0
>
>
> For SparkSQL ,when we open AE by 'set spark.sql.adapative.enable=true'，the ExchangeCoordinator will introduced to determine the number of post-shuffle partitions. But in some certain conditions,the coordinator performed not very well, there are always some tasks retained and they worked with Shuffle Read Size / Records 0.0B/0 ,We could increase the spark.sql.adaptive.shuffle.targetPostShuffleInputSize to solve this,but this action is unreasonable as targetPostShuffleInputSize Should not be set too large.
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