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https://issues.apache.org/jira/browse/HDFS-10514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15421943#comment-15421943
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Xiaobing Zhou commented on HDFS-10514:
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[~anu] thank you for comments.
Right now DiskBalancer#queryWorkStatus only returned sourcePath and destPath,
which are inadequate for the scan command (HDFS-9462) that reports the diff as
a result of data movement while disk balancer is running. [HDFS-9462 v000
patch|https://issues.apache.org/jira/secure/attachment/12809967/HDFS-9462-HDFS-1312.000.patch]
shows why storage id and type are needed. Thanks.
> Augment QueryDiskBalancerPlan to return storage id/type of source/dest volumes
> ------------------------------------------------------------------------------
>
> Key: HDFS-10514
> URL: https://issues.apache.org/jira/browse/HDFS-10514
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Reporter: Xiaobing Zhou
> Assignee: Xiaobing Zhou
> Attachments: HDFS-10514-HDFS-1312.000.patch,
> HDFS-10514-HDFS-1312.001.patch
>
>
> DiskBalancerWorkEntry returned by QueryDiskBalancerPlan only contains paths
> of source/dest volumes. It's preferable to get storage id/storage type too.
> Scan command could show a rich set of information how data is moved between
> different volumes.
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