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From "Liu Shaohui (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-9892) Add info port to ServerName to support multi instances in a node
Date Tue, 05 Nov 2013 03:27:17 GMT
Liu Shaohui created HBASE-9892:
----------------------------------

             Summary: 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


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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