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From "Jeffrey Zhong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-7824) Improve master start up time when there is log split work
Date Fri, 22 Feb 2013 22:12:13 GMT

     [ https://issues.apache.org/jira/browse/HBASE-7824?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jeffrey Zhong updated HBASE-7824:
---------------------------------

    Attachment: hbase-7824.patch

Unblock master starts up when there are non-meta region servers' split work. After the fix,
master will only block by meta region server log spliting work. More details as following:
    
    1) Adding support to fast master up
    2) Adding a test case for new code
    3) Fix test function makehlog to creat rows with keys within assigned region's key space
                
> Improve master start up time when there is log split work
> ---------------------------------------------------------
>
>                 Key: HBASE-7824
>                 URL: https://issues.apache.org/jira/browse/HBASE-7824
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>            Reporter: Jeffrey Zhong
>            Assignee: Jeffrey Zhong
>             Fix For: 0.94.6
>
>         Attachments: hbase-7824.patch
>
>
> When there is log split work going on, master start up waits till all log split work
completes even though the log split has nothing to do with meta region servers.
> It's a bad behavior considering a master node can run when log split is happening while
its start up is blocking by log split work. 
> Since master is kind of single point of failure, we should start it ASAP.

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