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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4387) Error while syncing: DFSOutputStream is closed
Date Wed, 21 Sep 2011 17:51:14 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13109705#comment-13109705
] 

Lars Hofhansl commented on HBASE-4387:
--------------------------------------

Until then... anybody opposed to this change?

J-D diagnosed the problem correct, I think. And my change should fix it. As this is a race
there is no proof of course.

The only question is whether the first attempt should be logged if it failed, maybe even at
info level so that we can see these cases even without debug logging.


> Error while syncing: DFSOutputStream is closed
> ----------------------------------------------
>
>                 Key: HBASE-4387
>                 URL: https://issues.apache.org/jira/browse/HBASE-4387
>             Project: HBase
>          Issue Type: Bug
>          Components: wal
>    Affects Versions: 0.92.0
>            Reporter: Todd Lipcon
>            Assignee: Lars Hofhansl
>            Priority: Critical
>             Fix For: 0.92.0
>
>         Attachments: 4387.txt, errors-with-context.txt
>
>
> In a billion-row load on ~25 servers, I see "error while syncing" reasonable often with
the error "DFSOutputStream is closed" around a roll. We have some race where a roll at the
same time as heavy inserts causes a problem.

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