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https://issues.apache.org/jira/browse/HDFS-9279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14978708#comment-14978708
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Kihwal Lee commented on HDFS-9279:
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Actually, I think this makes more sense. Assuming roughly even distribution of
data, excluding everything from dicomm'ing nodes makes the used/total unchanged
initially. As blocks are replicated used/total will increase. I think this
tracks the reality better.
> Decomissioned capacity should not be considered for configured/used capacity
> ----------------------------------------------------------------------------
>
> Key: HDFS-9279
> URL: https://issues.apache.org/jira/browse/HDFS-9279
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.6.1
> Reporter: Kuhu Shukla
> Assignee: Kuhu Shukla
> Attachments: HDFS-9279-v1.patch, HDFS-9279-v2.patch,
> HDFS-9279-v3.patch, HDFS-9279-v4.patch
>
>
> Capacity of a decommissioned node is being accounted as configured and used
> capacity metrics. This gives incorrect perception of cluster usage.
> Once a node is decommissioned, its capacity should be considered similar to a
> dead node.
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