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From unmesha sreeveni <unmeshab...@gmail.com>
Subject Re: java.io.FileNotFoundException: File does not exist: Error while running Decision Tree Hadoop MapReduce
Date Fri, 13 Dec 2013 04:29:14 GMT
res = ToolRunner.run(new Configuration(), new C45(), args);
whether this can be the reason ..in eclipse i am getting  the expected
output and a false result in cluster
I read that there are limitations in LocalJobRunner.


On Thu, Dec 12, 2013 at 4:21 PM, unmesha sreeveni <unmeshabiju@gmail.com>wrote:

> Yes i copied my input file as -copyFromLocal
>
> But the java.io.FileNotFoundException: File does not exist:
> /user/sree/C45/intermediate1.txt is happenning as part of my Reduce
> function
>
> C45 id=new C45();
> System.out.println("count "+cnt);
>
> Path input = new Path("C45/intermediate"+id.current_index+".txt");
>  //Path chck = new Path("C45/cnt_"+id.current_index+".txt");
>  Configuration conf = new Configuration();
> conf.set("fs.defaultFS", "hdfs://my remote-ip/");
>  conf.set("hadoop.job.ugi", "hdfs");
> FileSystem fs = FileSystem.get(conf);
>
> BufferedWriter bw = new BufferedWriter(
>  new OutputStreamWriter(fs.create(input, true)));
>  System.out.println("Text from Reducer: "+
> "C45/intermediate"+id.current_index+".txt"+ text);
>  System.out.println("file
> exists:/user/dataadmin/C45/intermediate"+id.current_index+".txt"+fs.exists(input));
>
> for(String str: text) {
>  bw.write(str);
> }
>
> bw.newLine();
>  bw.close();
>  As part of this code
> Several intermediate files are created:
> C45/intermediate0.txt
> C45/intermediate1.txt
> C45/intermediate2.txt
> C45/intermediate3.txt
> C45/intermediate4.txt
> C45/intermediate5.txt
> C45/intermediate6.txt
> C45/intermediate7.txt
> C45/rule.txt
> I tried it from Eclipse
> giving
> Configuration conf = new Configuration();
>  conf.set("fs.defaultFS", "hdfs://my remote-ip/");
>  conf.set("hadoop.job.ugi", "hdfs");
> FileSystem fs = FileSystem.get(conf);
> My decision tree is successfull
>
> But wen i export my program as jar file and run in cluster the above error
> is happenening
> But 2 files are created
> C45/intermediate0.txt and C45/rule.txt.....
> But this results in a wrong output.
>
>
> On Thu, Dec 12, 2013 at 3:37 PM, John Hancock <jhancock1975@gmail.com>wrote:
>
>> Is the file actually in hdfs?  Did you run "hadoop dfs -copyFromLocal
>> <file-name> <hdfs-destination>"
>>
>>
>> On Wed, Dec 11, 2013 at 5:53 AM, unmesha sreeveni <unmeshabiju@gmail.com>wrote:
>>
>>> 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*
>>>
>>>
>>>
>>
>
>
> --
> *Thanks & Regards*
>
> Unmesha Sreeveni U.B
>
> *Junior Developer*
>
>
>


-- 
*Thanks & Regards*

Unmesha Sreeveni U.B

*Junior Developer*

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