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Date: Tue, 12 May 2015 22:20:01 +0000 (UTC)
From: "Allen Wittenauer (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Updated] (HDFS-6300) Prevent multiple balancers from
 running simultaneously
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     [ https://issues.apache.org/jira/browse/HDFS-6300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Allen Wittenauer updated HDFS-6300:
-----------------------------------
    Summary: Prevent multiple balancers from running simultaneously  (was: Shouldn't allows to run multiple balancer simultaneously)

> Prevent multiple balancers from running simultaneously
> ------------------------------------------------------
>
>                 Key: HDFS-6300
>                 URL: https://issues.apache.org/jira/browse/HDFS-6300
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer & mover
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>              Labels: BB2015-05-RFC
>         Attachments: HDFS-6300-001.patch, HDFS-6300-002.patch, HDFS-6300-003.patch, HDFS-6300.patch
>
>
> Javadoc of "Balancer.java" says, it will not allow to run second balancer if the first one is in progress. But I've noticed multiple can run together and balancer.id implementation is not safe guarding.
> {code}
>  * <li>Another balancer is running. Exiting...
> {code}



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