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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7052) Archival Storage: Add Mover into hdfs script
Date Wed, 17 Sep 2014 05:39:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14136804#comment-14136804

Allen Wittenauer commented on HDFS-7052:

bq. Yes, the Mover scans the whole namespace or specific files/directories to detect block
replicas that need migration, and thus may require much more memory than balancer.

I basically want folks to think twice before adding Yet Another Environment Variable for their
special project because most of the time it just adds friction to the admin side. Balancer
is a great example of a superfluous var.  In this case, I suspect HADOOP_CLIENT_OPTS would
have been more than sufficient.  :(

> Archival Storage: Add Mover into hdfs script
> --------------------------------------------
>                 Key: HDFS-7052
>                 URL: https://issues.apache.org/jira/browse/HDFS-7052
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: scripts
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>            Priority: Minor
>             Fix For: 3.0.0
>         Attachments: HDFS-7052.000.patch, HDFS-7052.001.patch
> Similar with Balancer, we should add Mover into the hdfs script.

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