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https://issues.apache.org/jira/browse/HIVE-23294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17095005#comment-17095005
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Rajesh Balamohan commented on HIVE-23294:
-----------------------------------------
Tried out .2 in the cluster. Haven't seen major CPU burn with reflection and
also removes the locking issue.
+1.
> Remove sync bottleneck in TezConfigurationFactory
> -------------------------------------------------
>
> Key: HIVE-23294
> URL: https://issues.apache.org/jira/browse/HIVE-23294
> Project: Hive
> Issue Type: Improvement
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Priority: Major
> Attachments: HIVE-23294.1.patch, HIVE-23294.2.patch, Screenshot
> 2020-04-24 at 1.53.20 PM.png
>
>
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/TezConfigurationFactory.java#L53]
> [https://github.com/apache/hadoop/blob/master/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/Configuration.java#L1628]
> It ends up locking for property names in the config. For short running
> queries with concurrency, this is an issue.
>
> !Screenshot 2020-04-24 at 1.53.20 PM.png|width=1086,height=459!
>
>
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