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
