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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1681) Federation: support per pool and per node policies in Balancer
Date Tue, 01 Mar 2011 22:05:36 GMT
Federation: support per pool and per node policies in Balancer
--------------------------------------------------------------

                 Key: HDFS-1681
                 URL: https://issues.apache.org/jira/browse/HDFS-1681
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: balancer
    Affects Versions: Federation Branch
            Reporter: Tsz Wo (Nicholas), SZE
            Assignee: Tsz Wo (Nicholas), SZE


Change balancer to support per pool and per node policies.

*per Node*: Cluster is balance if each node is balance.
*per Pool*: Cluster is balance if each pool is balance.

Note that per Pool implies per Node but NOT the other way around.

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