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From "Adrian Muraru (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 Tue, 21 Feb 2012 13:20:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13212567#comment-13212567
] 

Adrian Muraru commented on HBASE-5209:
--------------------------------------

Hi Stack,

Just tested this patch in 0.92 branch and it seems that /hbase/backup-masters node is not
created in ZooKeeperWatcher#createBaseZNodes()
although is included in the patch above.
ZKUtil.createAndFailSilent(this, backupMasterAddressesZNode);

Integration issue?

                
> 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, 0.92.1
>
>         Attachments: HBASE_5209_v5.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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