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https://issues.apache.org/jira/browse/HBASE-7771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13571932#comment-13571932
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Francis Liu commented on HBASE-7771:
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Though the 3.4.5 upgrade is already part of our tarball distribution.
> 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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