[jira] [Commented] (HIVE-17853) RetryingMetaStoreClient loses UGI impersonation-context when reconnecting after timeout

["Mithun Radhakrishnan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-17853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16275017#comment-16275017 ] 

Mithun Radhakrishnan commented on HIVE-17853:
---------------------------------------------

I'll check this version of the fix in. I have raised HIVE-18199 to track the addition of the unit-test.

> RetryingMetaStoreClient loses UGI impersonation-context when reconnecting after timeout
> ---------------------------------------------------------------------------------------
>
>                 Key: HIVE-17853
>                 URL: https://issues.apache.org/jira/browse/HIVE-17853
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore
>    Affects Versions: 3.0.0, 2.4.0, 2.2.1
>            Reporter: Mithun Radhakrishnan
>            Assignee: Chris Drome
>            Priority: Critical
>         Attachments: HIVE-17853.01-branch-2.patch, HIVE-17853.01.patch
>
>
> The {{RetryingMetaStoreClient}} is used to automatically reconnect to the Hive metastore, after client timeout, transparently to the user.
> In case of user impersonation (e.g. Oozie super-user {{oozie}} impersonating a Hadoop user {{mithun}}, to run a workflow), in case of timeout, we find that the reconnect causes the {{UGI.doAs()}} context to be lost. Any further metastore operations will be attempted as the login-user ({{oozie}}), as opposed to the effective user ({{mithun}}).
> We should have a fix for this shortly.



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