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From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5209) HConnection/HMasterInterface should allow for way to get hostname of currently active master in multi-master HBase setup
Date Sat, 18 Feb 2012 20:45:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13211067#comment-13211067
] 

stack commented on HBASE-5209:
------------------------------

My fault.  I was reading HBASE-5209-v1.diff.  Pardon me.  Thanks for testing.  Old client
against new cluster is what needs to work (new client against old server is YMMD).

Patch looks good to me.  Mind attaching it here so we can run it through hadoopqa to make
sure it doesn't have side effects?  Then I'll commit.  Thanks David.




                
> HConnection/HMasterInterface should allow for way to get hostname of currently active
master in multi-master HBase setup
> ------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-5209
>                 URL: https://issues.apache.org/jira/browse/HBASE-5209
>             Project: HBase
>          Issue Type: Improvement
>          Components: master
>    Affects Versions: 0.94.0, 0.90.5, 0.92.0
>            Reporter: Aditya Acharya
>            Assignee: David S. Wang
>             Fix For: 0.94.0, 0.90.7, 0.92.1
>
>         Attachments: HBASE-5209-v0.diff, HBASE-5209-v1.diff
>
>
> I have a multi-master HBase set up, and I'm trying to programmatically determine which
of the masters is currently active. But the API does not allow me to do this. There is a getMaster()
method in the HConnection class, but it returns an HMasterInterface, whose methods do not
allow me to find out which master won the last race. The API should have a getActiveMasterHostname()
or something to that effect.

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