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https://issues.apache.org/jira/browse/HIVE-14239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15378410#comment-15378410
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Aihua Xu commented on HIVE-14239:
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Attached patch-1: changed OperationManager to serve one session rather than for
the whole HS2, so we can remove opHandles from SessionImpl and keep operations
info in one place. Also added SessionHandle in OperationHandle so we can get
session info from Operation directly.
> Change OperationManager to serve each session and make it threadsafe
> --------------------------------------------------------------------
>
> Key: HIVE-14239
> URL: https://issues.apache.org/jira/browse/HIVE-14239
> Project: Hive
> Issue Type: Sub-task
> Components: HiveServer2
> Affects Versions: 2.0.1
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Attachments: HIVE-14239.1.patch
>
>
> Currently OperationManager is designed to hold all the operations from all
> the sessions. It will cause the functions to unnecessarily sync between the
> operations across the sessions. And also there are some functions are not
> threadsafe which could be the cause for invalid OperationHandle.
> Plan to change OperationManager to just serve one session and make it a
> helper class for HiveSession rather than a service which doesn't seem to be
> needed.
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