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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13453) Master should not bind to region server ports
Date Tue, 14 Apr 2015 20:42:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14494832#comment-14494832
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Enis Soztutar commented on HBASE-13453:
---------------------------------------

+1. I have tried it locally with local mode and pseudo dist mode. [~ndimiduk] as RM for 1.1,
I think you should take a note of this jira since it is bringing back the old config options
from 0.98. We should add a fat release note, and update the book if possible. 

> Master should not bind to region server ports
> ---------------------------------------------
>
>                 Key: HBASE-13453
>                 URL: https://issues.apache.org/jira/browse/HBASE-13453
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Enis Soztutar
>            Assignee: Devaraj Das
>            Priority: Critical
>             Fix For: 2.0.0, 1.1.0
>
>         Attachments: 34111-2.txt, HBASE-13453.patch, HBASE-13453.patch
>
>
> In 1.0, master by default binds to the region server ports (rpc and info). We have done
it so thinking that in the long term, master and meta co-location will be default, and we
can merge the master and region server as a single daemon. 
> Over at HBASE-11165, if the conclusion end up being that meta will not be colocated at
all, then master hosting a region server will just become an implementation detail. [~saint.ack@gmail.com]
says that we might never allow master to host regions. 
> Now, we are stuck in a state where we have made master bind to RS ports in 1.0, which
might create some confusion (and frustration) for small cluster users who traditionally used
to host a master and a region server on the same node.
> I think we should undo this in 1.1 and use the previous master ports (16000) and not
bind to 16030, so that the user does not need to do anything to bring up a RS on the same
host. At least users going from 0.98 -> 1.1 will not take a hit. Users going from 1.0 ->
1.1 will see changed default ports. 



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