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https://issues.apache.org/jira/browse/HBASE-14401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14745256#comment-14745256
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ramkrishna.s.vasudevan commented on HBASE-14401:
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I think this was a set up issue.  Not able to reproduce.  Let me get back to 
this if I can reproduce this.

> Stamp failed appends with sequenceid too.... Cleans up latches
> --------------------------------------------------------------
>
>                 Key: HBASE-14401
>                 URL: https://issues.apache.org/jira/browse/HBASE-14401
>             Project: HBase
>          Issue Type: Sub-task
>          Components: test, wal
>            Reporter: stack
>            Assignee: stack
>             Fix For: 2.0.0, 1.2.0, 1.3.0
>
>         Attachments: 14401.txt, 14401.v7.txt, 14401.v7.txt, 14401.v7.txt, 
> 14401v3.txt, 14401v3.txt, 14401v3.txt, 14401v6.txt
>
>
> Looking in test output I see we can sometimes get stuck waiting on 
> sequenceid... The parent issues redo of our semantic makes it so we encounter 
> failed append more often around damaged WAL.
> This patch makes it so we stamp sequenceid always, even if the append fails. 
> This way all sequenceids are accounted for but more important, the latch on 
> sequenceid down in WALKey will be cleared.. where before it was not being 
> cleared (there is no global list of outstanding WALKeys waiting on 
> sequenceids so no way to clean them up... we don't need such a list if we 
> ALWAYS stamp the sequenceid).



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