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Larry McCay commented on HADOOP-10357: -------------------------------------- This has been verified with loginUserFromKeytabAndReturnUGI as well as with a patch for getUGIFromSubject from HADOOP-10342. Using VisualVM we can identify UgiInstrumentation as a source of some of this leak - we end up with an instance for every connection established and subsequently closed. > 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. -- This message was sent by Atlassian JIRA (v6.1.5#6160)