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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2923) Namenode IPC handler count uses the wrong configuration key
Date Thu, 09 Feb 2012 05:35:59 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13204278#comment-13204278
] 

Hudson commented on HDFS-2923:
------------------------------

Integrated in Hadoop-Hdfs-0.23-Commit #517 (See [https://builds.apache.org/job/Hadoop-Hdfs-0.23-Commit/517/])
    HDFS-2923. Namenode IPC handler count uses the wrong configuration key. Contributed by
Todd Lipcon.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1242219
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java

                
> Namenode IPC handler count uses the wrong configuration key
> -----------------------------------------------------------
>
>                 Key: HDFS-2923
>                 URL: https://issues.apache.org/jira/browse/HDFS-2923
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.23.0, 0.23.1
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Critical
>             Fix For: 0.24.0, 0.23.2
>
>         Attachments: hdfs-2923.txt
>
>
> In HDFS-1763, there was a typo introduced which causes the namenode to use dfs.datanode.handler.count
to set the number of IPC threads instead of the correct dfs.namenode.handler.count. This results
in bad performance under high load, since there are not nearly enough handlers.

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