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https://issues.apache.org/jira/browse/HBASE-5916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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rajeshbabu updated HBASE-5916:
------------------------------

    Status: Open  (was: Patch Available)
    
> RS restart just before master intialization we make the cluster non operative
> -----------------------------------------------------------------------------
>
>                 Key: HBASE-5916
>                 URL: https://issues.apache.org/jira/browse/HBASE-5916
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.94.0, 0.92.1
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>            Priority: Critical
>             Fix For: 0.94.1
>
>         Attachments: HBASE-5916_trunk.patch, HBASE-5916_trunk_1.patch, 
> HBASE-5916_trunk_1.patch, HBASE-5916_trunk_2.patch, HBASE-5916_trunk_3.patch, 
> HBASE-5916_trunk_4.patch, HBASE-5916_trunk_v5.patch, 
> HBASE-5916_trunk_v6.patch, HBASE-5916_trunk_v7.patch, 
> HBASE-5916_trunk_v8.patch, HBASE-5916v8.patch
>
>
> Consider a case where my master is getting restarted.  RS that was alive when 
> the master restart started, gets restarted before the master initializes the 
> ServerShutDownHandler.
> {code}
> serverShutdownHandlerEnabled = true;
> {code}
> In this case when the RS tries to register with the master, the master will 
> try to expire the server but the server cannot be expired as still the 
> serverShutdownHandler is not enabled.
> This case may happen when i have only one RS gets restarted or all the RS 
> gets restarted at the same time.(before assignRootandMeta).
> {code}
> LOG.info(message);
>       if (existingServer.getStartcode() < serverName.getStartcode()) {
>         LOG.info("Triggering server recovery; existingServer " +
>           existingServer + " looks stale, new server:" + serverName);
>         expireServer(existingServer);
>       }
> {code}
> If another RS is brought up then the cluster comes back to normalcy.
> May be a very corner case.

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