[jira] [Commented] (HBASE-15436) BufferedMutatorImpl.flush() appears to get stuck

["Sangjin Lee (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-15436?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15188261#comment-15188261 ] 

Sangjin Lee commented on HBASE-15436:
-------------------------------------

See YARN-4736 for more details.

> BufferedMutatorImpl.flush() appears to get stuck
> ------------------------------------------------
>
>                 Key: HBASE-15436
>                 URL: https://issues.apache.org/jira/browse/HBASE-15436
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 1.0.2
>            Reporter: Sangjin Lee
>         Attachments: hbaseException.log, threaddump.log
>
>
> We noticed an instance where the thread that was executing a flush ({{BufferedMutatorImpl.flush()}}) got stuck when the (local one-node) cluster shut down and was unable to get out of that stuck state.
> The setup is a single node HBase cluster, and apparently the cluster went away when the client was executing flush. The flush eventually logged a failure after 30+ minutes of retrying. That is understandable.
> What is unexpected is that thread is stuck in this state (i.e. in the {{flush()}} call). I would have expected the {{flush()}} call to return after the complete failure.



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