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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15631) Backport Regionserver Groups (HBASE-6721) to branch-1
Date Tue, 17 Oct 2017 15:40:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16207800#comment-16207800

Andrew Purtell commented on HBASE-15631:

bq. ServerName.java seems to have brought HostAndPort back.

ServerName copied verbatim from branch-2 to be compatible. This is not my doing. Should we
patch ServerName everywhere? We could on a separate JIRA. 

bq.Changes in ProtobufUtil.java seem unnecessary

I thought I removed these. Let me check. There is a new RSGroupsProtobufUtil that should contain
all new changes. 

bq. The HMaster changes look "interesting". Looks like there could be NPE condition with regionState
in the reshuffled if-statement (the original seems more correct). And I also do not follow
the unconditional call to randomAssignment there. Are those changes needed at all?

These changes come from the original branch-1 backport patch. I'm not sure. We can try changing
this code to look more correct and see if something expected by RSGroups breaks. Thanks for
having a look. This is great feedback. 

> Backport Regionserver Groups (HBASE-6721) to branch-1 
> ------------------------------------------------------
>                 Key: HBASE-15631
>                 URL: https://issues.apache.org/jira/browse/HBASE-15631
>             Project: HBase
>          Issue Type: New Feature
>    Affects Versions: 1.4.0
>            Reporter: Francis Liu
>            Assignee: Francis Liu
>             Fix For: 1.4.0, 1.5.0
>         Attachments: HBASE-15631-branch-1.patch, HBASE-15631.branch-1.patch, HBASE-15631.patch
> Based on dev list discussion backporting region server group should not be an issue as
it does not: 1. destabilize the code. 2. cause backward incompatibility. 

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