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From "Matteo Bertozzi (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5666) RegionServer doesn't retry to check if base node is available
Date Mon, 02 Apr 2012 19:27:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13244488#comment-13244488
] 

Matteo Bertozzi commented on HBASE-5666:
----------------------------------------

The problem here is that there's no ConnectionLossException... if you take a look at the log
you can see that there's no KeeperException but zookeeper respond that the base node doesn't
exists.
                
> RegionServer doesn't retry to check if base node is available
> -------------------------------------------------------------
>
>                 Key: HBASE-5666
>                 URL: https://issues.apache.org/jira/browse/HBASE-5666
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver, zookeeper
>            Reporter: Matteo Bertozzi
>            Assignee: Matteo Bertozzi
>         Attachments: HBASE-5666-v1.patch, HBASE-5666-v2.patch, HBASE-5666-v3.patch, HBASE-5666-v4.patch,
hbase-1-regionserver.log, hbase-2-regionserver.log, hbase-3-regionserver.log, hbase-master.log,
hbase-regionserver.log, hbase-zookeeper.log
>
>
> I've a script that starts hbase and a couple of region servers in distributed mode (hbase.cluster.distributed
= true)
> {code}
> $HBASE_HOME/bin/start-hbase.sh
> $HBASE_HOME/bin/local-regionservers.sh start 1 2 3
> {code}
> but the region servers are not able to start...
> It seems that during the RS start the the znode is still not available, and HRegionServer.initializeZooKeeper()
check just once if the base not is available.
> {code}
> 2012-03-28 21:54:05,013 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: STOPPED:
Check the value configured in 'zookeeper.znode.parent'. There could be a mismatch with the
one configured in the master.
> 2012-03-28 21:54:08,598 FATAL org.apache.hadoop.hbase.regionserver.HRegionServer: ABORTING
region server localhost,60202,1332964444824: Initialization of RS failed.  Hence aborting
RS.
> java.io.IOException: Received the shutdown message while waiting.
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.blockAndCheckIfStopped(HRegionServer.java:626)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.initializeZooKeeper(HRegionServer.java:596)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.preRegistrationInitialization(HRegionServer.java:558)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:672)
> 	at java.lang.Thread.run(Thread.java:662)
> {code}

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