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https://issues.apache.org/jira/browse/HDFS-10765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Wang resolved HDFS-10765.
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Resolution: Fixed
> Log a messages if finalize metadata hasn't been done, but customer kicked off
> HDFS Balancer
> -------------------------------------------------------------------------------------------
>
> Key: HDFS-10765
> URL: https://issues.apache.org/jira/browse/HDFS-10765
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer & mover
> Reporter: David Wang
>
> -- The finalize metadata hasn't been done yet, but there is no obvious
> message to inform that if started Balancer. Currently its just responding -7.
> Below is the logs.
> --------------------------------------------------------------------------------------
> 2016-06-21 13:57:26,130 INFO [main] balancer.Balancer
> (Balancer.java:logUtilizationCollection(362)) - 1 over-utilized:
> [10.10.120.32:50010:DISK]
> 2016-06-21 13:57:26,131 INFO [main] balancer.Balancer
> (Balancer.java:logUtilizationCollection(362)) - 5 underutilized:
> [10.10.120.93:50010:DISK, 10.10.120.97:50010:DISK, 10.10.120.95:50010:DISK,
> 10.10.120.96:50010:DISK, 10.10.120.94:50010:DISK]
> 2016-06-21 13:57:26,133 INFO [main] balancer.Balancer
> (Balancer.java:runOneIteration(526)) - Need to move 1.09 TB to make the
> cluster balanced.
> Jun 21, 2016 1:57:26 PM 0 0 B 1.09 TB -1 B
> Jun 21, 2016 1:57:26 PM Balancing took 1.519 seconds
> -- Copied the comments here.
> // Should not run the balancer during an unfinalized upgrade, since moved
> // blocks are not deleted on the source datanode.
> http://opengrok.sjc.cloudera.com:8080/source/xref/CDH-5.5.1/hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java#530
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