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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HBASE-8105) RegionServer Doesn't Rejoin Cluster after Netsplit
Date Fri, 15 Mar 2013 03:46:14 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13603082#comment-13603082
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Anoop Sam John edited comment on HBASE-8105 at 3/15/13 3:45 AM:
----------------------------------------------------------------

Can you attach RS logs?
                
      was (Author: anoopsamjohn):
    Can you attach some logs?
                  
> RegionServer Doesn't Rejoin Cluster after Netsplit
> --------------------------------------------------
>
>                 Key: HBASE-8105
>                 URL: https://issues.apache.org/jira/browse/HBASE-8105
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.92.1
>         Environment: Linux Ubuntu 10.04 LTS
>            Reporter: philo vivero
>
> Running a 15-node HBase cluster. Testing various failure scenarios. Segregate one RegionServer
from the cluster by firewalling off every port except SSH (because we need to be able to re-enable
the node later).
> After the RS is automatically removed from the cluster, we re-enable all ports again,
but RS never rejoins the cluster.
> I suspect the possibility this is desired behaviour, but haven't found proof so far.
The code doesn't have any comment indicating this is the behaviour desired:
> http://grepcode.com/file/repo1.maven.org/maven2/org.apache.hbase/hbase/0.92.2/org/apache/hadoop/hbase/regionserver/HRegionServer.java/
> See lines starting at 624, public void run(). It makes it through the first try/catch
block, but then loops inside the second try/catch block. Our hypothesis is that it never gets
out naturally.
> If we bounce the RegionServer process, then it rejoins the cluster.

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