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https://issues.apache.org/jira/browse/RANGER-265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alok Lal updated RANGER-265:
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Attachment: 0001-RANGER-265-Changed-TimedEventUtil-so-that-it-would-i.patch
Review created: https://reviews.apache.org/r/31317/
> If Hive repository's connection is setup incorrectly then it can make policy
> manager unresponsive.
> --------------------------------------------------------------------------------------------------
>
> Key: RANGER-265
> URL: https://issues.apache.org/jira/browse/RANGER-265
> Project: Ranger
> Issue Type: Bug
> Affects Versions: 0.4.0
> Reporter: Alok Lal
> Assignee: Alok Lal
> Fix For: 0.4.0, 0.5.0
>
> Attachments:
> 0001-RANGER-265-Changed-TimedEventUtil-so-that-it-would-i.patch
>
>
> [Reporting on behalf of Abhay Kulkarni]
> If the connection of a hive repository is setup incorrectly in such a manner
> that connect call gets blocked, i.e. does not error out then it quickly leads
> to a buildup of connect threads inside policy manager. And eventually it
> stops responding to both the service plugins and to user requests.
> The cause of the problem seems to be the incomplete implementation of the
> deferred/timed execution class. While the problem was reported on Hive it
> could affect any component. This problem could be fixed at several levels:
> - Server could timeout the connection call and then interrupt that thread.
> - Server code that opens client connections to various services could in turn
> change how the critical sections are structured so that this problem does not
> happen and/or connection attempts don't block if someone else is trying to
> get a connection, etc.
> - For not a fix that could have widest impact should be considered.
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