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From "SRIKANTH KOMMINENI (RIT Student)" <sxk7...@rit.edu>
Subject java.lang.OutOfMemoryError: Java heap space No matter the size of the input its given
Date Tue, 10 Apr 2012 23:17:25 GMT
Can you please help me resolve this issue.

The following is the error that I get no matter how small the input the
program is fed with.
I tried changing the default heap size of hadoop in the conf/hadoop-env.sh
but that also did not help.

The following is the error that i get.



Wrote input for Map #9
Starting Job
12/04/10 19:12:23 WARN mapred.JobClient: No job jar file set.  User classes
may not be found. See JobConf(Class) or JobConf#setJar(String).
12/04/10 19:12:23 INFO mapred.FileInputFormat: Total input paths to process
: 10
12/04/10 19:12:23 INFO mapred.JobClient: Running job: job_local_0001
12/04/10 19:12:23 INFO util.ProcessTree: setsid exited with exit code 0
12/04/10 19:12:23 INFO mapred.Task:  Using ResourceCalculatorPlugin :
org.apache.hadoop.util.LinuxResourceCalculatorPlugin@ab444
12/04/10 19:12:23 INFO mapred.MapTask: numReduceTasks: 1
12/04/10 19:12:23 INFO mapred.MapTask: io.sort.mb = 100
12/04/10 19:12:23 WARN mapred.LocalJobRunner: job_local_0001
java.lang.OutOfMemoryError: Java heap space
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.<init>(MapTask.java:949)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:428)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:372)
at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:212)
12/04/10 19:12:24 INFO mapred.JobClient:  map 0% reduce 0%
12/04/10 19:12:24 INFO mapred.JobClient: Job complete: job_local_0001
12/04/10 19:12:24 INFO mapred.JobClient: Counters: 0
12/04/10 19:12:24 INFO mapred.JobClient: Job Failed: NA
java.io.IOException: Job failed!
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1265)
at org.apache.hadoop.examples.PiEstimator.estimate(PiEstimator.java:297)
at org.apache.hadoop.examples.PiEstimator.run(PiEstimator.java:342)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.examples.PiEstimator.main(PiEstimator.java:351)
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)

-- 
Srikanth Kommineni,
Graduate Assistant,
Dept of Computer Science,
Rochester Institute of Technology.

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