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From "Francis Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7771) Secure HBase Client in MR job causes tasks to wait forever
Date Tue, 05 Feb 2013 23:37:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13571917#comment-13571917
] 

Francis Liu commented on HBASE-7771:
------------------------------------

[~ekoontz] Thanks for that contribution

[~lhofhansl] Just reiterating what Eugene said. No upgrade of servers are necessary. The only
change is users running with secure zookeeper will have to upgrade their _clients_ to 3.4.5
with this patch.
                
> Secure HBase Client in MR job causes tasks to wait forever
> ----------------------------------------------------------
>
>                 Key: HBASE-7771
>                 URL: https://issues.apache.org/jira/browse/HBASE-7771
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Francis Liu
>            Assignee: Francis Liu
>             Fix For: 0.96.0, 0.94.5
>
>         Attachments: 7771-0.94-combined.txt, 7771-combined.txt, HBASE-7771_94.patch,
HBASE-7771-addendum-v0.patch, HBASE-7771.patch
>
>
> This seems to be a regression caused by HBASE-4791 wherein we check if secure zookeeper
is enabled and if so we make use of saslLatch to verify security handshake is completed. But
in the case of MR, we won't be negotiating a secure connection thus we end up waiting forever
for the saslLatch.
> Since the bug the saslLatch workaround is trying to fix (ZOOKEEPER-1437) is already fixed
in zookeeper-3.4.5. Removal of the workaround fixes the problem.

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