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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Zookeeper : Hconnection Received unexpected KeeperException
Date Sun, 25 Aug 2013 02:57:38 GMT
Which version of HBase are you using ?

Was hbase-site.xml in the classpath of your reducer ?

Cheers


On Sat, Aug 24, 2013 at 6:07 PM, Pavan Sudheendra <pavan0591@gmail.com>wrote:

> This was the Namenode log generated while running MR applications.. What do
> they indicate where the problem is?
>
>
>     2013-08-25 00:53:11,840 ERROR
> >> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: ZooKeeper exists
> >> failed after 3 retries
> >>     2013-08-25 00:53:11,841 ERROR
> >> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher: hconnection Received
> >> unexpected KeeperException, re-throwing exception
> >>
> >>
> >>
> >>     2013-08-25 00:57:52,595 ERROR
> >> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher: hconnection Received
> >> unexpected KeeperException, re-throwing exception
> >>     org.apache.zookeeper.KeeperException$ConnectionLossException:
> >> KeeperErrorCode = ConnectionLoss for /hbase
> >>     at
> >> org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
> >>     at
> >> org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> >>     at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)
> >>     at
> >>
> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:172)
> >>     at
> >> org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:450)
> >>     at
> >>
> org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker.checkIfBaseNodeAvailable(ZooKeeperNodeTracker.java:208)
> >>     at
> >>
> org.apache.hadoop.hbase.zookeeper.RootRegionTracker.waitRootRegionLocation(RootRegionTracker.java:77)
> >>     at
> >>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:874)
> >>     at
> >>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:987)
> >>     at
> >>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:885)
> >>     at
> >>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:987)
> >>     at
> >>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:889)
> >>     at
> >>
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:846)
> >>     at
> org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:271)
> >>     at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:211)
> >>     at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:170)
> >>     at
> >>
> com.cisco.spvtg.corona.audience.profiling.actiondatainterpret.ActionDataInterpret$AnalyzeReducerTable.reduce(ActionDataInterpret.java:268)
> >>     at
> >>
> com.company.ActionDataInterpret$AnalyzeReducerTable.reduce(ActionDataInterpret.java:243)
> >>     at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:164)
> >>     at
> >> org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:610)
> >>     at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:444)
> >>     at org.apache.hadoop.mapred.Child$4.run(Child.java:268)
> >>     at java.security.AccessController.doPrivileged(Native Method)
> >>     at javax.security.auth.Subject.doAs(Subject.java:396)
> >>     at
> >>
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
> >>
> >
> --
> Regards-
> Pavan
>

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