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https://issues.apache.org/jira/browse/HDFS-13219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16383388#comment-16383388
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Yiqun Lin commented on HDFS-13219:
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To fix this under shared datanodes case, we may additionally to store all
existed datanode info in the State Store and do the duplicate removal in
aggregating summary . Not so sure if this is worth to do.
> RBF:Cluster information on Router is not correct when the Federation shares
> datanodes.
> --------------------------------------------------------------------------------------
>
> Key: HDFS-13219
> URL: https://issues.apache.org/jira/browse/HDFS-13219
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 2.9.0
> Reporter: Tao Jie
> Priority: Major
>
> Now summary information on Router website aggregates summary of each
> nameservice. However in a typical federation cluster deployment, datanodes
> are shared among nameservices. Consider we have 2 namespaces and 100
> datanodes in one cluster. 100 datanodes are available for each namespace, but
> we see 200 datanodes on the router website. So does other information such as
> {{Total capacity}}, {{Remaining capacity}}.
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