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https://issues.apache.org/jira/browse/HBASE-5875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13261759#comment-13261759
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Lars Hofhansl commented on HBASE-5875:
--------------------------------------

Can we move this to 0.94.1?
                
> Process RIT and Master restart may remove an online server considering it as 
> a dead server
> ------------------------------------------------------------------------------------------
>
>                 Key: HBASE-5875
>                 URL: https://issues.apache.org/jira/browse/HBASE-5875
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.92.1
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.94.0
>
>
> If on master restart it finds the ROOT/META to be in RIT state, master tries 
> to assign the ROOT region through ProcessRIT.
> Master will trigger the assignment and next will try to verify the Root 
> Region Location.
> Root region location verification is done seeing if the RS has the region in 
> its online list.
> If the master triggered assignment has not yet been completed in RS then the 
> verify root region location will fail.
> Because it failed 
> {code}
> splitLogAndExpireIfOnline(currentRootServer);
> {code}
> we do split log and also remove the server from online server list. Ideally 
> here there is nothing to do in splitlog as no region server was restarted.
> So master, though the server is online, master just invalidates the region 
> server.
> In a special case, if i have only one RS then my cluster will become non 
> operative.

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