Hi 

            I am running map reduce row count program to count number of
rows in my HBase table. It is giving the following exception:

 

09/05/21 10:31:47 INFO hdfs.DFSClient:
org.apache.hadoop.ipc.RemoteException: java.io.IOException: File
/hadoop/mapred/system/job_200905211019_0003/job.jar could only be
replicated to 0 nodes, instead of 1

      at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(F
SNamesystem.java:1280)

      at
org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:3
51)

      at sun.reflect.GeneratedMethodAccessor8.invoke(Unknown Source)

      at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)

      at java.lang.reflect.Method.invoke(Method.java:597)

      at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:481)

      at org.apache.hadoop.ipc.Server$Handler.run(Server.java:894)

 

      at org.apache.hadoop.ipc.Client.call(Client.java:697)

      at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216)

      at $Proxy0.addBlock(Unknown Source)

      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

      at java.lang.reflect.Method.invoke(Unknown Source)

      at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvo
cationHandler.java:82)

      at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocation
Handler.java:59)

      at $Proxy0.addBlock(Unknown Source)

      at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DF
SClient.java:2814)

      at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(D
FSClient.java:2696)

      at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.j
ava:1996)

      at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSCli
ent.java:2183)

 

09/05/21 10:31:47 WARN hdfs.DFSClient: NotReplicatedYetException
sleeping /hadoop/mapred/system/job_200905211019_0003/job.jar retries
left 4

 

Please tell me how I can solve this exception.

 

Thanks & Regards

Aseem Puri

 

 

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