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From alaa nobani <alaa_nob...@yahoo.com>
Subject Re: IO Exception on startup
Date Sun, 03 Jan 2010 09:08:58 GMT
Hi, Yes Hbase is working but our application which uses hbase still not able to connect to
hbase and gives the following error on startup:

2010-01-03 02:56:41,809 INFO  [main] hbase.client.HConnectionManager$TableServers (HConnectionManager.java:336)
- getMaster attempt 7 of 10 failed; retrying after sleep of 16000
java.io.IOException: org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode
= ConnectionLoss for /hbase/master
        at org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.readAddressOrThrow(ZooKeeperWrapper.java:331)
        at org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.readMasterAddressOrThrow(ZooKeeperWrapper.java:240)
        at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getMaster(HConnectionManager.java:318)
        at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:72)


Do you suggest anything may cause this exception ?? what we should look for?

Thanks.


--- On Thu, 12/31/09, Jean-Daniel Cryans <jdcryans@apache.org> wrote:

> From: Jean-Daniel Cryans <jdcryans@apache.org>
> Subject: Re: IO Exception on startup
> To: hbase-user@hadoop.apache.org
> Date: Thursday, December 31, 2009, 9:16 PM
> This exception happens normally in
> the current release but it usually
> doesn't appear on the command line. I cleaned it up for the
> next
> release.
> 
> HBase should still be working.
> 
> J-D
> 
> On Thu, Dec 31, 2009 at 1:36 AM, alaa nobani <alaa_nobani@yahoo.com>
> wrote:
> > Zookeper is started , actually this exception is
> thrown after starting the master, here is the complete
> output i got when starting hbase:
> >
> > localhost: starting zookeeper, logging to
> /home/admo40/hbase-0.20.2/bin/../logs/hbase-admo40-zookeeper-mail.kalimat-maktoob.com.out
> > starting master, logging to
> /home/admo40/hbase-0.20.2/bin/../logs/hbase-admo40-master-mail.kalimat-maktoob.com.out
> > java.io.IOException:
> org.apache.zookeeper.KeeperException$NoNodeException:
> KeeperErrorCode = NoNode for /hbase/master
> >        at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.readAddressOrThrow(ZooKeeperWrapper.java:332)
> >        at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.readAddress(ZooKeeperWrapper.java:318)
> >        at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.readMasterAddress(ZooKeeperWrapper.java:250)
> >        at
> org.apache.hadoop.hbase.master.ZKMasterAddressWatcher.waitForMasterAddressAvailability(ZKMasterAddressWatcher.java:82)
> >        at
> org.apache.hadoop.hbase.master.HMaster.writeAddressToZooKeeper(HMaster.java:267)
> >        at
> org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:254)
> >        at
> org.apache.hadoop.hbase.LocalHBaseCluster.<init>(LocalHBaseCluster.java:94)
> >        at
> org.apache.hadoop.hbase.LocalHBaseCluster.<init>(LocalHBaseCluster.java:78)
> >        at
> org.apache.hadoop.hbase.master.HMaster.doMain(HMaster.java:1214)
> > localhost: starting regionserver, logging to
> /home/admo40/hbase-0.20.2/bin/../logs/hbase-admo40-regionserver-mail.kalimat-maktoob.com.out
> >
> >
> >
> > --- On Thu, 12/31/09, Jeff Zhang <zjffdu@gmail.com>
> wrote:
> >
> >> From: Jeff Zhang <zjffdu@gmail.com>
> >> Subject: Re: IO Exception on startup
> >> To: hbase-user@hadoop.apache.org
> >> Date: Thursday, December 31, 2009, 11:18 AM
> >> The zookeeper is not started ?
> >>
> >>
> >> Jeff Zhang
> >>
> >>
> >>
> >> On Thu, Dec 31, 2009 at 12:33 AM, alaa nobani
> <alaa_nobani@yahoo.com>
> >> wrote:
> >>
> >> > Hi,
> >> > Any one can recognize the following exception
> am
> >> getting when starting
> >> > hbase and help me fix it:
> >> >
> >> > java.io.IOException:
> >>
> org.apache.zookeeper.KeeperException$NoNodeException:
> >> > KeeperErrorCode = NoNode for /hbase/master
> >> >        at
> >> >
> >>
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.readAddressOrThrow(ZooKeeperWrapper.java:332)
> >> >        at
> >> >
> >>
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.readAddress(ZooKeeperWrapper.java:318)
> >> >        at
> >> >
> >>
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.readMasterAddress(ZooKeeperWrapper.java:250)
> >> >        at
> >> >
> >>
> org.apache.hadoop.hbase.master.ZKMasterAddressWatcher.waitForMasterAddressAvailability(ZKMasterAddressWatcher.java:82)
> >> >        at
> >> >
> >>
> org.apache.hadoop.hbase.master.HMaster.writeAddressToZooKeeper(HMaster.java:267)
> >> >        at
> >>
> org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:254)
> >> >        at
> >> >
> >>
> org.apache.hadoop.hbase.LocalHBaseCluster.<init>(LocalHBaseCluster.java:94)
> >> >        at
> >> >
> >>
> org.apache.hadoop.hbase.LocalHBaseCluster.<init>(LocalHBaseCluster.java:78)
> >> >        at
> >>
> org.apache.hadoop.hbase.master.HMaster.doMain(HMaster.java:1214)
> >> >
> >> >
> >> > Thanks.
> >> >
> >> >
> >> >
> >> >
> >>
> >
> >
> >
> >
> 


      

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