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https://issues.apache.org/jira/browse/HDFS-4234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13509039#comment-13509039
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Tsz Wo (Nicholas), SZE commented on HDFS-4234:
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When I manually ran TestBalancerWithNodeGroup with or without the patch, it
always timed out in my machine. Looking at the previous Jerkins report [build
#3573|https://builds.apache.org/job/PreCommit-HDFS-Build/3573//testReport/org.apache.hadoop.hdfs.server.balancer/],
TestBalancerWithNodeGroup somehow was skipped so that the problem was not
detected. I filed HDFS-4261.
> Use the generic code for choosing datanode in Balancer
> ------------------------------------------------------
>
> Key: HDFS-4234
> URL: https://issues.apache.org/jira/browse/HDFS-4234
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h4234_20121128.patch, h4234_20121128.patch
>
>
> HDFS-3495 added some generic code for choosing datanodes with NodeGroup
> topology in Balancer. We should reuse the code for choosing datanodes with
> racks.
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