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From "John Zhuge (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-10297) Increase default balance bandwidth and concurrent moves
Date Fri, 15 Apr 2016 05:25:25 GMT
John Zhuge created HDFS-10297:
---------------------------------

             Summary: Increase default balance bandwidth and concurrent moves
                 Key: HDFS-10297
                 URL: https://issues.apache.org/jira/browse/HDFS-10297
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: balancer & mover
    Affects Versions: 2.6.0
            Reporter: John Zhuge
            Assignee: John Zhuge
            Priority: Minor


Adjust the default values to better support the current level of customer host and network
configurations.

Increase the default for property {{dfs.datanode.balance.bandwidthPerSec}} from 1 to 10 MB.
Apply to DN. 10 MB/s is about 10% of the GbE network.

Increase the default for property {{dfs.datanode.balance.max.concurrent.moves}} from 5 to
50. Apply to DN and Balancer. The default number of DN receiver threads is 4096. The default
number of balancer mover threads is 1000.



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