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https://issues.apache.org/jira/browse/HADOOP-10357?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13949406#comment-13949406
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Daryn Sharp commented on HADOOP-10357:
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That's rather bad behavior. It's universally changing the auth type which will
affect all connections. RPCv9 should be able to work due to negotiation, but
earlier RPC versions like 1.x will likely fail if thrift enables security and
the client attempts a kerberized connection to an insecure NN/JT/etc.
> 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
> Attachments: visualvm-hive.png
>
>
> 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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