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From praveenesh kumar <praveen...@gmail.com>
Subject org.apache.hadoop.mapred.InvalidInputException ??
Date Mon, 25 Apr 2011 06:02:22 GMT
Hi,

I am new to hadoop and the scenario is like this :

I have hadoop installed on a linux machine having IP as (162.192.100.46)
and I have another window machine with eclipse and hadoop plugin installed..
I am able to connect to linux hadoop machine and can see the dfs location
and mapred folder using my plugin. I copied all the hadoop jar files from
linux to windows and set them in my eclipse.

I am trying to run a sample small code from windows to the linux hadoop
machine

Code :

import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.FileInputFormat;
import org.apache.hadoop.mapred.FileOutputFormat;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.Mapper;
import org.apache.hadoop.mapred.Reducer;
import org.apache.hadoop.mapred.TextInputFormat;
import org.apache.hadoop.mapred.TextOutputFormat;

public class TestDriver {

 public static void main(String[] args) {
  JobClient client = new JobClient();
  JobConf conf = new JobConf(TestDriver.class);

  // TODO: specify output types
  conf.setOutputKeyClass(Text.class);
  conf.setOutputValueClass(IntWritable.class);
  // TODO: specify input and output DIRECTORIES (not files)
  //conf.setInputPath(new Path("src"));
  //conf.setOutputPath(new Path("out"));

  conf.setInputFormat(TextInputFormat.class);
  conf.setOutputFormat(TextOutputFormat.class);



  FileInputFormat.setInputPaths(conf, new Path("In"));
  FileOutputFormat.setOutputPath(conf, new Path("Out"));


  // TODO: specify a mapper
  conf.setMapperClass(org.apache.hadoop.mapred.lib.IdentityMapper.class);

  // TODO: specify a reducer
  conf.setReducerClass(org.apache.hadoop.mapred.lib.IdentityReducer.class);

  client.setConf(conf);
  try {
   JobClient.runJob(conf);
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
}



Whenever I am trying to run the code on eclipse plugin ..
I am getting the following error :


*11/04/25 13:39:16 INFO jvm.JvmMetrics: Initializing JVM Metrics with
processName=JobTracker, sessionId=*

*11/04/25 13:39:16 WARN mapred.JobClient: Use GenericOptionsParser for
parsing the arguments. Applications should implement Tool for the same.*
*

org.apache.hadoop.mapred.InvalidInputException**: Input path does not exist:
hdfs://162.192.100.46:54310/user/hadoop/In*

*at org.apache.hadoop.mapred.FileInputFormat.listStatus(**
FileInputFormat.java:190**)*

*at org.apache.hadoop.mapred.FileInputFormat.getSplits(**
FileInputFormat.java:201**)*

*at org.apache.hadoop.mapred.JobClient.writeOldSplits(**JobClient.java:810**
)*

*at org.apache.hadoop.mapred.JobClient.submitJobInternal(**
JobClient.java:781**)*

*at org.apache.hadoop.mapred.JobClient.submitJob(**JobClient.java:730**)*

*at org.apache.hadoop.mapred.JobClient.runJob(**JobClient.java:1249**)*

*at TestDriver.main(**TestDriver.java:46**)*
I know I am doing something wrong, Can anyone tell me where I am wrong, and
how can I run my code from windows to that linux hadoop machine.

Thanks,
Praveenesh

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