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https://issues.apache.org/jira/browse/HDFS-2621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13161070#comment-13161070
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Uma Maheswara Rao G commented on HDFS-2621:
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since 'alredy running' check made in NameNodeConnector ctor.
{code}
// Check if there is another balancer running.
// Exit if there is another one running.
out = checkAndMarkRunningBalancer();
if (out == null) {
throw new IOException("Another balancer is running");
}
{code}
simply it is throwing IOException and will not return correct status.
> Balancer is not checking ALREADY_RUNNING state and never returns this state.
> ----------------------------------------------------------------------------
>
> Key: HDFS-2621
> URL: https://issues.apache.org/jira/browse/HDFS-2621
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: balancer
> Affects Versions: 0.24.0, 0.23.1
> Reporter: Uma Maheswara Rao G
>
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