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https://issues.apache.org/jira/browse/HADOOP-10357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13908577#comment-13908577
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Larry McCay commented on HADOOP-10357:
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Also, note that this is against the 1.2 codebase.
The UgiInstrumentation class is no longer in use in recent releases.
I have not tried to reproduce the issue on the 2 line yet though.
> Memory Leak in UserGroupInformation.doAs for JDBC Connection to Hive
> --------------------------------------------------------------------
>
> Key: HADOOP-10357
> URL: https://issues.apache.org/jira/browse/HADOOP-10357
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 1.2.0
> Reporter: Larry McCay
>
> When using UGI.doAs in order to make a connection there appears to be a
> memory leak involving the UGI that is used for the doAs and the UGI held by
> TUGIAssumingTransport.
> When using this approach to establishing a JDBC connection in an environment
> that will serve many users and requests client side eventually runs out of
> memory.
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