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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8818) Allow Balancer to run faster
Date Fri, 24 Jul 2015 06:54:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo Nicholas Sze updated HDFS-8818:
--------------------------------------
    Attachment: h8818_20150723.patch

h8818_20150723.patch: changes the global moveExecutor to per datanode moveExecutor(s) and
changes MAX_SIZE_TO_MOVE to be configurable. 

> Allow Balancer to run faster
> ----------------------------
>
>                 Key: HDFS-8818
>                 URL: https://issues.apache.org/jira/browse/HDFS-8818
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: balancer & mover
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>         Attachments: h8818_20150723.patch
>
>
> The original design of Balancer is intentionally to make it run slowly so that the balancing
activities won't affect the normal cluster activities and the running jobs.
> There are new use case that cluster admin may choose to balance the cluster when the
cluster load is low, or in a maintain window.  So that we should have an option to allow Balancer
to run faster.



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