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https://issues.apache.org/jira/browse/HDFS-12615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16434256#comment-16434256
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Íñigo Goiri commented on HDFS-12615:
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[~linyiqun] thanks for following up.
As you mentioned we closed most of the opened tasks and now we have three big 
parts:
# Tasks that would be important to have like the one to keep locality 
(HDFS-13248) and the DBMS store (HDFS-13245).
# Small fixes, improvements, and some new unit tests.
# Big tasks like security, rebalancer, and the DNs interacting with the Routers.

I think tracking 1 and 2 in this umbrella is fine but I'm thinking on making 
the others their own umbrella:
* HDFS-12510: security will have 3 or more patches here including the local 
security, delegation tokens, documentation, etc. ([~zhengxg3] is working on 
this).
* HDFS-13123: the rebalancer will require a few JIRAs like the store for the 
rebalancer logs, the rebalancer, unit tests, etc. ([~ywskycn] is taking care of 
this).
* HDFS-13098: this will require a few subtasks and something similar to 
HDFS-13312. (I can take this).

Any thoughts on this? Any other important feature missing or that would be good 
to have?

> 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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