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https://issues.apache.org/jira/browse/HDFS-15294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jinglun updated HDFS-15294:
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Attachment: distcp-balance.pdf
> RBF: Balance data across federation namespaces with DistCp and snapshot diff
> ----------------------------------------------------------------------------
>
> Key: HDFS-15294
> URL: https://issues.apache.org/jira/browse/HDFS-15294
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Jinglun
> Priority: Major
> Attachments: distcp-balance.pdf
>
>
> This jira introduces a new balance command 'fedbalance' that is ran by the
> administrator. The process is:
> 1. Use distcp and snapshot diff to sync data between src and dst until they
> are the same.
> 2. Update mount table in Router.
> 3. Delete the src to trash.
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