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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6861) Separate Balancer specific logic form Dispatcher
Date Tue, 28 Jul 2015 00:46:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo Nicholas Sze updated HDFS-6861:
--------------------------------------
    Issue Type: Sub-task  (was: Improvement)
        Parent: HDFS-8825

> Separate Balancer specific logic form Dispatcher
> ------------------------------------------------
>
>                 Key: HDFS-6861
>                 URL: https://issues.apache.org/jira/browse/HDFS-6861
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: balancer & mover
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>              Labels: BB2015-05-TBR
>         Attachments: h6861_20140818.patch, h6861_20140819.patch
>
>
> In order to balance datanode storage utilization of a cluster, Balancer (1) classifies
datanodes into different groups (overUtilized, aboveAvgUtilized, belowAvgUtilized and underUtilized),
(2) chooses source and target datanode pairs and (3) chooses blocks to move.  Some of these
logic are in Dispatcher.  It is better to separate them out.  This JIRA is a further work
of HDFS-6828.



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