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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7310) Mover can give first priority to local DN if it has target storage type available in local DN
Date Wed, 06 May 2015 11:25:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14530370#comment-14530370
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Uma Maheswara Rao G commented on HDFS-7310:
-------------------------------------------

Thank you Nicholas for helping Surendra on fix and review. Nice finding Surendra! .- Thanks

> Mover can give first priority to local DN if it has target storage type available in
local DN
> ---------------------------------------------------------------------------------------------
>
>                 Key: HDFS-7310
>                 URL: https://issues.apache.org/jira/browse/HDFS-7310
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: balancer & mover
>    Affects Versions: 3.0.0
>            Reporter: Uma Maheswara Rao G
>            Assignee: Vinayakumar B
>             Fix For: 2.7.0
>
>         Attachments: HDFS-7310-001.patch, HDFS-7310-002.patch, HDFS-7310-003.patch, HDFS-7310-004.patch
>
>
> Currently Mover logic may move blocks to any DN which had target storage type. But if
the src DN has target storage type then mover can give highest priority to local DN. If local
DN does not contains target storage type, then it can assign to any DN as the current logic
does.
>   This is a thought, have not go through the code fully yet.
> Thoughts?



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