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From "Jeff Hammerbacher (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6915) Add daemon restart option
Date Fri, 13 Aug 2010 00:46:16 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12898025#action_12898025

Jeff Hammerbacher commented on HADOOP-6915:

In a magical world where ponies run free under rainbows, adding restart() as a method to HDFS-326
would be another way to tackle this sort of problem.

> Add daemon restart option
> -------------------------
>                 Key: HADOOP-6915
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6915
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: scripts
>            Reporter: Nicolas Spiegelberg
>            Priority: Minor
>             Fix For: 0.22.0, 0.20-append
>         Attachments: HADOOP-6915_0.20-append.patch, HADOOP-6915_0.22.patch
> With the addition of AvatarNode, we are working on a rolling restart option for upgrading
a cluster.  It seems that a generic restart option would be useful for this purpose and perhaps
other administrative tasks.  Add a 'restart' option to hadoop-daemon.sh and also modify 'slaves.sh'
to run operations in parallel or serially.  

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