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Posted to issues@hbase.apache.org by "Jean-Marc Spaggiari (JIRA)" <ji...@apache.org> on 2013/03/14 16:06:14 UTC
[jira] [Commented] (HBASE-8105) RegionServer Doesn't Rejoin Cluster
after Netsplit
[ https://issues.apache.org/jira/browse/HBASE-8105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13602324#comment-13602324 ]
Jean-Marc Spaggiari commented on HBASE-8105:
--------------------------------------------
Is the RS still running when you re-open the ports? Since it losts the connection with ZooKeeper, it might have sent down already, no?
> 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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