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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8923) Add -source flag to balancer usage message
Date Fri, 19 Feb 2016 02:45:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15153600#comment-15153600
] 

Tsz Wo Nicholas Sze commented on HDFS-8923:
-------------------------------------------

I have committed this.  Thanks, Chris!

> Add -source flag to balancer usage message
> ------------------------------------------
>
>                 Key: HDFS-8923
>                 URL: https://issues.apache.org/jira/browse/HDFS-8923
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer & mover, documentation
>            Reporter: Chris Trezzo
>            Assignee: Chris Trezzo
>            Priority: Trivial
>             Fix For: 2.8.0
>
>         Attachments: HDFS-8923-trunk-v1.patch, HDFS-8923-trunk-v2.patch, HDFS-8923-trunk-v3.patch,
HDFS-8923-trunk-v4.patch
>
>
> HDFS-8826 added a -source flag to the balancer, but the usage message still needs to
be updated. See current usage message in trunk:
> {code}
>    private static final String USAGE = "Usage: hdfs balancer"
>        + "\n\t[-policy <policy>]\tthe balancing policy: "
>        + BalancingPolicy.Node.INSTANCE.getName() + " or "
>        + BalancingPolicy.Pool.INSTANCE.getName()
>        + "\n\t[-threshold <threshold>]\tPercentage of disk capacity"
>        + "\n\t[-exclude [-f <hosts-file> | <comma-separated list of hosts>]]"
>        + "\tExcludes the specified datanodes."
>        + "\n\t[-include [-f <hosts-file> | <comma-separated list of hosts>]]"
>        + "\tIncludes only the specified datanodes."
>        + "\n\t[-idleiterations <idleiterations>]"
>        + "\tNumber of consecutive idle iterations (-1 for Infinite) before "
>        + "exit."
>        + "\n\t[-runDuringUpgrade]"
>        + "\tWhether to run the balancer during an ongoing HDFS upgrade."
>        + "This is usually not desired since it will not affect used space "
>        + "on over-utilized machines.";
> {code}



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