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https://issues.apache.org/jira/browse/HDFS-12615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16474997#comment-16474997
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Anu Engineer commented on HDFS-12615:
-------------------------------------

[~goiri] Thanks for your reply. As you mentioned, I realize that this JIRA was 
intended to be a small 20+ work items, But since then it has grown to 97 and 
will grow to more items.

Once you are part of it and file JIRAs every day, It is hard to realize how big 
the patch sets have become.

I still think at this stage ( perhaps this should have been done much earlier) 
that we should open a new branch and revert the changes in trunk and 2.9.

Then we can bring Quotas, Muti-subcluster mount points, DN changes, Dynamic 
Sub-cluster, Rebalacer, etc. together when we merge the tree.

Right now, this JIRA has become too big, and it has interwoven JIRAs(small and 
large) – like you mentioned the Quotas or Multi-subcluster mount points in the 
trunk. I sincerely believe that it is the most productive thing to do, that way 
you can design and test changes without impacting Trunk.

> Router-based HDFS federation phase 2
> ------------------------------------
>
>                 Key: HDFS-12615
>                 URL: https://issues.apache.org/jira/browse/HDFS-12615
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Íñigo Goiri
>            Assignee: Íñigo Goiri
>            Priority: Major
>              Labels: RBF
>
> This umbrella JIRA tracks set of improvements over the Router-based HDFS 
> federation (HDFS-10467).



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