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https://issues.apache.org/jira/browse/HDFS-12615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16478089#comment-16478089
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Íñigo Goiri commented on HDFS-12615:
------------------------------------

Given that we discarded reverting, I'm not sure a branch makes sense for what 
is left in this JIRA.
The ones we are on time to amend are already in their own umbrella and will 
move into their own branch accordingly.
If we have a branch for what is left open here, we will have a branch with a 
topic like "stuffs on RBF".
Similarly, a design doc for such "topic" would have a similar issue.
Given that, I'm proposing to take the big chunks in this JIRA and if they are 
large enough, move them to their own umbrella with a proper design doc.
If they are too small for a full doc, then just fix the description.

So far, I've gone through them:
* HDFS-13044: this is pretty big () and I created HDFS-13575 to add there a 
proper design doc.
* HDFS-13484: this is around 4/5 JIRAs so not sure an umbrella makes sense but 
I'll add a design doc to HDFS-13484.
* HDFS-13224: this one is also 4/5 JIRAs but it might be worth having its own 
umbrella. For sure a design doc. Thoughts?

I'm also going over their descriptions trying to make them "more descriptive".


BTW, as I'm going through all these patches and I have to say that size in 
bytes is not a very good indicator.
For example, HDFS-13478 is 90KB of nothing (defining RPC interfaces wit PB 
implementations is extremely verbose).
In any case, right now most patches are <10KB and the only outlier is 
HDFS-13215 which is a refactor.

> 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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