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From "Liu Shaohui (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9892) Add info port to ServerName to support multi instances in a node
Date Thu, 07 Nov 2013 02:37:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13815575#comment-13815575
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Liu Shaohui commented on HBASE-9892:
------------------------------------

Thanks [~ndimiduk][~enis]
HBASE-7027 partly have fixed the problem by report the info port to hmaster via serverLoad
indead. 

But the  infoPort in table.jps still be got from config.
{code}
  // HARDCODED FOR NOW TODO: FIX GET FROM ZK
  // This port might be wrong if RS actually ended up using something else.
  int infoPort = conf.getInt("hbase.regionserver.info.port", 60030);
{code}

What about backporting HBASE-7027 to 0.94 and fixing the issue in table.jsp? 


> Add info port to ServerName to support multi instances in a node
> ----------------------------------------------------------------
>
>                 Key: HBASE-9892
>                 URL: https://issues.apache.org/jira/browse/HBASE-9892
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Liu Shaohui
>            Assignee: Liu Shaohui
>            Priority: Minor
>         Attachments: HBASE-9892-0.94-v1.diff, HBASE-9892-0.94-v2.diff, HBASE-9892-0.94-v3.diff
>
>
> The full GC time of  regionserver with big heap(> 30G ) usually  can not be controlled
in 30s. At the same time, the servers with 64G memory are normal. So we try to deploy multi
rs instances(2-3 ) in a single node and the heap of each rs is about 20G ~ 24G.
> Most of the things works fine, except the hbase web ui. The master get the RS info port
from conf, which is suitable for this situation of multi rs  instances in a node. So we add
info port to ServerName.
> a. at the startup, rs report it's info port to Hmaster.
> b, For root region, rs write the servername with info port ro the zookeeper root-region-server
node.
> c, For meta regions, rs write the servername with info port to root region 
> d. For user regions,  rs write the servername with info port to meta regions 
> So hmaster and client can get info port from the servername.
> To test this feature, I change the rs num from 1 to 3 in standalone mode, so we can test
it in standalone mode,
> I think Hoya(hbase on yarn) will encounter the same problem.  Anyone knows how Hoya handle
this problem?
> PS: There are  different formats for servername in zk node and meta table, i think we
need to unify it and refactor the code.



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