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https://issues.apache.org/jira/browse/HDFS-5807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13947920#comment-13947920
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Chen He commented on HDFS-5807:
-------------------------------

The new bug is filed as HDFS-6159

> TestBalancerWithNodeGroup.testBalancerWithNodeGroup fails intermittently on 
> Branch-2
> ------------------------------------------------------------------------------------
>
>                 Key: HDFS-5807
>                 URL: https://issues.apache.org/jira/browse/HDFS-5807
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 2.3.0
>            Reporter: Mit Desai
>            Assignee: Chen He
>             Fix For: 3.0.0, 2.4.0
>
>         Attachments: HDFS-5807.patch
>
>
> The test times out after some time.
> {noformat}
> java.util.concurrent.TimeoutException: Rebalancing expected avg utilization 
> to become 0.16, but on datanode 127.0.0.1:42451 it remains at 0.3 after more 
> than 20000 msec.
>       at 
> org.apache.hadoop.hdfs.server.balancer.TestBalancerWithNodeGroup.waitForBalancer(TestBalancerWithNodeGroup.java:151)
>       at 
> org.apache.hadoop.hdfs.server.balancer.TestBalancerWithNodeGroup.runBalancer(TestBalancerWithNodeGroup.java:178)
>       at 
> org.apache.hadoop.hdfs.server.balancer.TestBalancerWithNodeGroup.testBalancerWithNodeGroup(TestBalancerWithNodeGroup.java:302)
> {noformat}



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