you have to specify input path that is a directory where this job write its output try this: *randomtextwriter: "A map/reduce program that writes 10GB of random textual data per node"
cmd to run: bin/hadoop jar hadoop-0.20.2-examples.jar randomtextwriter inputRandom class name: randomtextwriter 1st arg: inputRandom (folder to which output is created*) -- -Thanks and Regards, Rahul Patodi Associate Software Engineer, Impetus Infotech (India) Private Limited, www.impetus.com Mob:09907074413 On Fri, Nov 26, 2010 at 7:37 PM, Pedro Costa <[email protected]> wrote: > Hi, > > I'm trying to run the randomtextwriter example, but I gor the following > error: > > $ bin/hadoop jar hadoop-0.20.2-dev-examples.jar randomtextwriter ~/temp/ > Running 10 maps. > Job started: Fri Nov 26 14:05:34 WET 2010 > java.io.IOException: No input paths specified in job > at > org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:189) > at > org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:247) > at > org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:898) > at > org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:796) > at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:747) > at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1281) > at > org.apache.hadoop.examples.RandomTextWriter.run(RandomTextWriter.java:238) > at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) > at > org.apache.hadoop.examples.RandomTextWriter.main(RandomTextWriter.java:249) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68) > at > org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139) > at > org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:64) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at org.apache.hadoop.util.RunJar.main(RunJar.java:156) > > How to run the randomtextwriter example? > -- > Pedro >
