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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1165) createSymlink should not hold the fsnamesytem lock when sync its edit log to disk
Date Wed, 19 May 2010 18:27:55 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12869249#action_12869249
] 

Todd Lipcon commented on HDFS-1165:
-----------------------------------

This is fixed in HDFS-988 (which generally cleans up synchronization and safemode checks throughout
FSN). I need to do a unit test over there, then it should be good to commit.

> createSymlink should not hold the fsnamesytem lock when sync its edit log to disk
> ---------------------------------------------------------------------------------
>
>                 Key: HDFS-1165
>                 URL: https://issues.apache.org/jira/browse/HDFS-1165
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.21.0
>            Reporter: Hairong Kuang
>            Assignee: Eli Collins
>            Priority: Blocker
>             Fix For: 0.21.0, 0.22.0
>
>
> Holding the fsnamesytem lock while calling logSync is unnecessary and decrease NameNode
performance.

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