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https://issues.apache.org/jira/browse/HDFS-9871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15214116#comment-15214116
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Tsz Wo Nicholas Sze commented on HDFS-9871:
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The value -1 means that it is not applicable (or not calculated). For SUCCESS,
it is fine to put 0 to bytesBeingMoved. However, for the exception cases, we
should put -1 for both bytesLeftToMove and bytesBeingMoved. I.e. the first
patch is better than the second patch. Thanks.
> "Bytes Being Moved" -ve(-1 B) when cluster was already balanced.
> ----------------------------------------------------------------
>
> Key: HDFS-9871
> URL: https://issues.apache.org/jira/browse/HDFS-9871
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Brahma Reddy Battula
> Assignee: Brahma Reddy Battula
> Attachments: HDFS-9871-002.patch, HDFS-9871.patch
>
>
> Run balancer when there is no {{over}} and {{under}} utlized nodes.
> {noformat}
> 16/02/29 02:39:40 INFO net.NetworkTopology: Adding a new node:
> /default-rack/**.120:50076
> 16/02/29 02:39:40 INFO net.NetworkTopology: Adding a new node:
> /default-rack/**.121:50076
> 16/02/29 02:39:40 INFO net.NetworkTopology: Adding a new node:
> /default-rack/**.122:50076
> 16/02/29 02:39:41 INFO balancer.Balancer: 0 over-utilized: []
> 16/02/29 02:39:41 INFO balancer.Balancer: 0 underutilized: []
> The cluster is balanced. Exiting...
> Feb 29, 2016 2:40:57 AM 0 0 B 0 B
> -1 B
> {noformat}
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