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https://issues.apache.org/jira/browse/HBASE-2694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12878273#action_12878273
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Karthik Ranganathan commented on HBASE-2694:
--------------------------------------------

Woohoo, patch finally committed :) Thanks for the reviews guys, and thanks for 
the follow up and commit Jonathan - that was super quick!



> Move RS to Master region open/close messaging into ZooKeeper
> ------------------------------------------------------------
>
>                 Key: HBASE-2694
>                 URL: https://issues.apache.org/jira/browse/HBASE-2694
>             Project: HBase
>          Issue Type: Sub-task
>          Components: master, regionserver
>            Reporter: Jonathan Gray
>            Assignee: Karthik Ranganathan
>            Priority: Critical
>             Fix For: 0.21.0
>
>         Attachments: HBASE-2694-final.patch, 
> HBASE-2694-OPENSOURCE-TRUNK-zk-based-messaging-v2.patch, 
> HBASE-2694-OPENSOURCE-TRUNK-zk-based-messaging.patch
>
>
> As a first step towards HBASE-2485, this issue is about changing the message 
> flow of opening and closing of regions without actually changing the 
> implementation of what happens on both the Master and RegionServer sides.  
> This way we can debug the messaging changes before the introduction of more 
> significant changes to the master architecture and handling of regions in 
> transition.

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