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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2870) Add Backup CLI Option to HMaster
Date Sat, 11 Sep 2010 19:51:33 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2870?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

stack updated HBASE-2870:

    Attachment: 2870-mend.txt

Here is the mend I made on Master to restore what I broke when I applied hbase-2692, master
rewrite.  It adds a new method to ActiveMasterManager -- isActiveMaster -- and then before
going on to block on obtaining the Master mantel -- it checks first to see if designated a
backup master and if so, loops till isActiveMaster is set.

> Add Backup CLI Option to HMaster
> --------------------------------
>                 Key: HBASE-2870
>                 URL: https://issues.apache.org/jira/browse/HBASE-2870
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Nicolas Spiegelberg
>            Assignee: Nicolas Spiegelberg
>            Priority: Minor
>             Fix For: 0.90.0
>         Attachments: 2870-mend.txt, HBASE-2870-2.patch
> The HMaster main() should allow a toggle like --backup, which forces it to be a secondary
master on startup versus a primary candidate.  That way, we can start up multiple masters
at once and deterministically know which one will be the original primary.

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