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https://issues.apache.org/jira/browse/HDFS-11549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15934797#comment-15934797
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Kleber Povoacao commented on HDFS-11549:
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The main idea is if you have your HDFS data backed in some kind of NAS or SAN
and need to just move the data to another cluster, just move the disk.
Sometimes the disaster recovery cluster is not so far from the production
cluster where you need to copy data through network
> Tool to migrate disk datanodes from one cluster to another
> ----------------------------------------------------------
>
> Key: HDFS-11549
> URL: https://issues.apache.org/jira/browse/HDFS-11549
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Kleber Povoacao
> Priority: Minor
>
> Propose to create a tool to export/deattach hdfs disks from a
> datanode-A/cluster-A and import/attach into a new datanode-B/cluster-B.
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