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https://issues.apache.org/jira/browse/HDFS-7702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14306187#comment-14306187
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Ravi Prakash commented on HDFS-7702:
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HDFS Federation was static partitioning from what I remember. Even though the
ambition to move subtrees across namenodes existed during the design phase, it
never came to fruition.
I'd be quite excited about this work. I ofcourse have my own opinions but I'll
hold on to them for now. This would be a pretty big chunk of work. I would like
to know who is signing up to do this. And I don't mean just you Ray!
> Move metadata across namenode - Effort to a real distributed namenode
> ---------------------------------------------------------------------
>
> Key: HDFS-7702
> URL: https://issues.apache.org/jira/browse/HDFS-7702
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Ray
> Assignee: Ray
>
> Implement a tool can show in memory namespace tree structure with
> weight(size) and a API can move metadata across different namenode. The
> purpose is moving data efficiently and faster, without moving blocks on
> datanode.
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