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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4479) In branch-1, logSync() may be called with the FSNamesystem lock held in commitBlockSynchronization
Date Fri, 08 Feb 2013 02:21:13 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4479?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao updated HDFS-4479:
----------------------------

    Affects Version/s: 1.2.0
    
> In branch-1, logSync() may be called with the FSNamesystem lock held in commitBlockSynchronization
> --------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-4479
>                 URL: https://issues.apache.org/jira/browse/HDFS-4479
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 1.2.0
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>
> In FSNamesystem#commitBlockSynchronization of branch-1, logSync() may be called when
the FSNamesystem lock is held. Similar with HDFS-4186, this may cause some performance issue.
> Since logSync is called right after the synchronization section, we can simply remove
the logSync call.

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