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https://issues.apache.org/jira/browse/HIVE-1959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13001085#comment-13001085
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Ning Zhang commented on HIVE-1959:
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+1 on WeakHashMap. HiveHistory.endQuery() is called at the finally clause of
Driver.execute(). There are some early exits (should be changed in my opinion.
I will file another JIRA to fix this) in the loop of execute() which will
bypass the finally clause. Using WeakHashMap can prevent leaks in this case.
> Potential memory leak when same connection used for long time. TaskInfo and
> QueryInfo objects are getting accumulated on executing more queries on the
> same connection.
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-1959
> URL: https://issues.apache.org/jira/browse/HIVE-1959
> Project: Hive
> Issue Type: Bug
> Components: Server Infrastructure
> Affects Versions: 0.8.0
> Environment: Hadoop 0.20.1, Hive0.5.0 and SUSE Linux Enterprise
> Server 10 SP2 (i586) - Kernel 2.6.16.60-0.21-smp (5).
> Reporter: Chinna Rao Lalam
> Assignee: Chinna Rao Lalam
> Attachments: HIVE-1959.patch
>
>
> *org.apache.hadoop.hive.ql.history.HiveHistory$TaskInfo* and
> *org.apache.hadoop.hive.ql.history.HiveHistory$QueryInfo* these two objects
> are getting accumulated on executing more number of queries on the same
> connection. These objects are getting released only when the connection is
> closed.
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