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https://issues.apache.org/jira/browse/HDFS-9279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15085445#comment-15085445
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Rajat Jain commented on HDFS-9279:
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While it makes sense to not include decommissioning nodes in configured
capacity, but they should still be used for calculating used capacity. Because
the data present in the decommissioning nodes would eventually be transferred
over to the live nodes. Is this understanding correct?
> 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
> Fix For: 3.0.0, 2.8.0
>
> 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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