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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1205) The open method of FSNamesystem should be synchronized
Date Fri, 11 May 2007 22:41:15 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12495190
] 

Owen O'Malley commented on HADOOP-1205:
---------------------------------------

I think this needs to be fixed for 0.13. I would propose fixing it as Raghu suggests by locking
the FSNameSystem for open.

> The open method of FSNamesystem should be synchronized
> ------------------------------------------------------
>
>                 Key: HADOOP-1205
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1205
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.12.2
>            Reporter: Hairong Kuang
>             Fix For: 0.13.0
>
>         Attachments: open.patch
>
>
> Method open accesses a shared data structure blockMap. If synchronization access is not
enforced, open might return inconsistent results.

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