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From "Suresh Srinivas (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2987) DNA_SHUTDOWN command is never sent by the NN
Date Thu, 23 Feb 2012 21:15:54 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13215059#comment-13215059
] 

Suresh Srinivas commented on HDFS-2987:
---------------------------------------

It is fairly simple code and should work. Datanode calls shutdown(), on receiving this command,
which is how DN is shutdown in many places. 
                
> DNA_SHUTDOWN command is never sent by the NN
> --------------------------------------------
>
>                 Key: HDFS-2987
>                 URL: https://issues.apache.org/jira/browse/HDFS-2987
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: data-node
>            Reporter: Todd Lipcon
>            Priority: Trivial
>              Labels: newbie
>
> The DataNode has a code path to handle a DNA_SHUTDOWN command, but in fact this command
has never been sent by the NN (it was introduced by HADOOP-641 in 0.8.0!)

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