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From "Eli Collins (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 21:03:56 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12869343#action_12869343
] 

Eli Collins commented on HDFS-1165:
-----------------------------------

Good find Hairong. Assuming HDFS-988 goes into 21 I think we can close this,  unless Todd
do you want to pull out that particular fix to a patch for this jira?

> 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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