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https://issues.apache.org/jira/browse/HIVE-10006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14371009#comment-14371009
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Xuefu Zhang commented on HIVE-10006:
------------------------------------

Re: Besides, is this ThreadLocal MapWork/ReduceWork cache new introduced 
optimization?

Yes, it's introduced in HIVE-9127. Looks like we need to be careful about this 
threadlocal map, indeed.

> RSC has memory leak while execute multi queries.[Spark Branch]
> --------------------------------------------------------------
>
>                 Key: HIVE-10006
>                 URL: https://issues.apache.org/jira/browse/HIVE-10006
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>    Affects Versions: 1.1.0
>            Reporter: Chengxiang Li
>            Assignee: Chengxiang Li
>            Priority: Critical
>              Labels: Spark-M5
>         Attachments: HIVE-10006.1-spark.patch, HIVE-10006.2-spark.patch, 
> HIVE-10006.2-spark.patch, HIVE-10006.3-spark.patch, HIVE-10006.4-spark.patch, 
> HIVE-10006.5-spark.patch, HIVE-10006.6-spark.patch, HIVE-10006.7-spark.patch
>
>
> While execute query with RSC, MapWork/ReduceWork number is increased all the 
> time, and lead to OOM at the end.



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