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From "John Zhuge (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-10294) Balancer configures DN properties
Date Thu, 14 Apr 2016 23:52:25 GMT
John Zhuge created HDFS-10294:
---------------------------------

             Summary: Balancer configures DN properties
                 Key: HDFS-10294
                 URL: https://issues.apache.org/jira/browse/HDFS-10294
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: balancer & mover
    Affects Versions: 2.6.0
            Reporter: John Zhuge
            Assignee: John Zhuge
            Priority: Critical


Balancer configures the 2 balance-related properties (bandwidthPerSec and concurrentMoves)
using NN API {{get/setBalancerBandwidth}} and the new {{get/setBalancerConcurrentMoves}}.

Details:
* Upon the start of the balancer, set the DN properties.
* Use NN API to query and set the 2 properties. There might be a slight delay for the property
changes to be propagated to all DNs.
* The DN property changes will not survive restart.
* Balancer gets the property values from command line or its config file.
* No need to edit the config file on each DN or run {{hdfs dfsadmin -setBalancerBandwidth}}
to configure every DN in the cluster.



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