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https://issues.apache.org/jira/browse/HIVE-11149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14955809#comment-14955809
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Sushanth Sowmyan commented on HIVE-11149:
-----------------------------------------

As an update, I do not think that we should be backporting HIVE-11891, since it 
refactors PerfLogger from hive-exec to hive-common, which is a cross-jar change 
that I don't think we should make on backport maint lines. However, this patch 
is simple enough that we could create a 1.2 version of this patch as well which 
will affect PerfLogger in hive-exec as it used to be in 1.2.

> Fix issue with sometimes HashMap in PerfLogger.java hangs 
> ----------------------------------------------------------
>
>                 Key: HIVE-11149
>                 URL: https://issues.apache.org/jira/browse/HIVE-11149
>             Project: Hive
>          Issue Type: Bug
>          Components: Logging
>    Affects Versions: 1.2.1
>            Reporter: WangMeng
>            Assignee: WangMeng
>             Fix For: 2.0.0
>
>         Attachments: HIVE-11149.01.patch, HIVE-11149.02.patch, 
> HIVE-11149.03.patch, HIVE-11149.04.patch
>
>
> In  Multi-thread environment,  sometimes the  HashMap in PerfLogger.java  
> will  casue massive Java Processes hang  and cost  large amounts of 
> unnecessary CPU and Memory.



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