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https://issues.apache.org/jira/browse/HDFS-6300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinayakumar B updated HDFS-6300:
--------------------------------
Resolution: Fixed
Fix Version/s: 2.7.1
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Committed to trunk, branch-2 and branch-2.7 as well. ( as this was critical )
Thanks [~rakeshr] for the contribution.
Thanks [~aw] and [~szetszwo] for reviews.
> 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
> Priority: Critical
> Fix For: 2.7.1
>
> Attachments: HDFS-6300-001.patch, HDFS-6300-002.patch,
> HDFS-6300-003.patch, HDFS-6300-004.patch, HDFS-6300-005.patch,
> HDFS-6300-006.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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