I am trying to run Decision Tree in Hadoop MapReduce.
But it is showing java.io.FileNotFoundException: File does not exist: in
cluster. But when i tried it from Eclipse it is showing the correct result
with the below settings
Configuration conf = new Configuration();
conf.set("fs.defaultFS", "remotesystem-ip/");
conf.set("hadoop.job.ugi", "hdfs");
And it created all the intermediate files under /user/sree/C45
hadoop fs -ls /user/sree/C45
Found 9 items
-rw-r--r-- 3 sree supergroup 263 2013-12-11 15:56
/user/sree/C45/intermediate0.txt
-rw-r--r-- 3 sree supergroup 106 2013-12-11 15:56
/user/sree/C45/intermediate1.txt
-rw-r--r-- 3 sree supergroup 130 2013-12-11 15:56
/user/sree/C45/intermediate2.txt
-rw-r--r-- 3 sree supergroup 128 2013-12-11 15:56
/user/sree/C45/intermediate3.txt
-rw-r--r-- 3 sree supergroup 54 2013-12-11 15:56
/user/sree/C45/intermediate4.txt
-rw-r--r-- 3 sree supergroup 50 2013-12-11 15:56
/user/sree/C45/intermediate5.txt
-rw-r--r-- 3 sree supergroup 48 2013-12-11 15:56
/user/sree/C45/intermediate6.txt
-rw-r--r-- 3 sree supergroup 53 2013-12-11 15:56
/user/sree/C45/intermediate7.txt
-rw-r--r-- 3 sree supergroup 97 2013-12-11 15:56
/user/sree/C45/rule.txt
When i tried exporting my jar on remote cluster and ran my job it is showing
In gainratio --- getcount
file exists:C45/intermediate1.txtfalse
java.io.FileNotFoundException: File does not exist:
/user/sree/C45/intermediate1.txt
at
org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:39)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsUpdateTimes(FSNamesystem.java:1341)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:1293)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1269)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1242)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:392)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:172)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44938)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1701)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1697)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1695)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at
org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:90)
at
org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:57)
at
org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:972)
at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:960)
at
org.apache.hadoop.hdfs.DFSInputStream.fetchLocatedBlocksAndGetLastBlockLength(DFSInputStream.java:238)
at
org.apache.hadoop.hdfs.DFSInputStream.openInfo(DFSInputStream.java:205)
at org.apache.hadoop.hdfs.DFSInputStream.<init>(DFSInputStream.java:198)
at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:1117)
at
org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:249)
at
org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:82)
at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:746)
at tech.GainRatio.getcount(GainRatio.java:121)
at tech.C45.main(C45.java:140)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
Caused by:
org.apache.hadoop.ipc.RemoteException(java.io.FileNotFoundException): File
does not exist: /user/sree/user/dataadmin/C45/intermediate1.txt
at
org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:39)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsUpdateTimes(FSNamesystem.java:1341)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:1293)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1269)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1242)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:392)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:172)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44938)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1701)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1697)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1695)
at org.apache.hadoop.ipc.Client.call(Client.java:1225)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
at $Proxy9.getBlockLocations(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:164)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:83)
at $Proxy9.getBlockLocations(Unknown Source)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getBlockLocations(ClientNamenodeProtocolTranslatorPB.java:155)
at
org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:970)
... 15 more
Why are my intermediate files not getting created in my remote system.
Am i doing anything wrong: Source:
https://github.com/studhadoop/MyC45/tree/master/tech
--
*Thanks & Regards*
Unmesha Sreeveni U.B
*Junior Developer*
