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https://issues.apache.org/jira/browse/HDFS-10821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15477007#comment-15477007
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Yiqun Lin commented on HDFS-10821:
----------------------------------
ReUpload the v003 patch. I found there was need to print the line {{Can't find
a DataNode that matches '%s'.}} here if we have already print the invalid nodes.
> DiskBalancer: Report command support with multiple nodes
> --------------------------------------------------------
>
> Key: HDFS-10821
> URL: https://issues.apache.org/jira/browse/HDFS-10821
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: balancer & mover
> Reporter: Yiqun Lin
> Assignee: Yiqun Lin
> Fix For: 2.9.0
>
> Attachments: HDFS-10821.001.patch, HDFS-10821.002.patch,
> HDFS-10821.003.patch
>
>
> Since HDFS-10813 has committed to the trunk, then we can use {{getNodes}}
> method to parse the nodes string and support multiple nodes with {{hdfs
> diskbalancer}} subcommands(ex -report, -query). In this JIRA, we are focusing
> on the subcommand {{-report}}.
> That means we can use command {{hdfs diskbalancer -report -node}} to print
> one or one more datanodes report info. A test input command(here I use UUID
> to specify one datanode):
> {code}
> hdfs diskbalancer -report -node
> e05ade8e-fb28-42cf-9aa9-43e564c0ec99,38714337-84fb-4e35-9ea3-0bb47d6da700
> {code}
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