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https://issues.apache.org/jira/browse/HIVE-15543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15800594#comment-15800594
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Rui Li commented on HIVE-15543:
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+1
> Don't try to get memory/cores to decide parallelism when Spark dynamic
> allocation is enabled
> --------------------------------------------------------------------------------------------
>
> Key: HIVE-15543
> URL: https://issues.apache.org/jira/browse/HIVE-15543
> Project: Hive
> Issue Type: Improvement
> Components: Spark
> Affects Versions: 2.2.0
> Reporter: Xuefu Zhang
> Assignee: Xuefu Zhang
> Attachments: HIVE-15543.patch
>
>
> Presently Hive tries to get numbers for memory and cores from the Spark
> application and use them to determine RS parallelism. However, this doesn't
> make sense when Spark dynamic allocation is enabled because the current
> numbers doesn't represent available computing resources, especially when
> SparkContext is initially launched.
> Thus, it makes send not to do that when dynamic allocation is enabled.
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