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	 <448697.8119.qm@web57707.mail.re3.yahoo.com>
Date: Sun, 3 Jan 2010 15:19:50 -0800
Message-ID: <7c962aed1001031519p2e3f6cd7ldb3d9e3a4716d764@mail.gmail.com>
Subject: Re: IO Exception on startup
From: stack <stack@duboce.net>
To: hbase-user@hadoop.apache.org
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On Sun, Jan 3, 2010 at 1:08 AM, alaa nobani <alaa_nobani@yahoo.com> wrote:

> 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?
>

Looks like client machine is not able to connect to zk.  It has an
hbase-site.xml w/ the proper zk ensemble members listed in its CLASSPATH?

St.Ack


>
> 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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