gridmix_2 error

hduser@arun-Presario-C500-RU914PA-ACJ:/usr/local/hadoop/src/benchmarks/gridmix2$ ./rungridmix_2
total 10 jobs
Jobs in waiting state: 10
Jobs in ready state: 0
Jobs in running state: 0
Jobs in success state: 0
Jobs in failed state: 0


12/02/12 12:21:07 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/02/12 12:21:07 INFO mapred.JobClient: Cleaning up the staging area hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201202121220_0001
12/02/12 12:21:07 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/02/12 12:21:08 INFO mapred.JobClient: Cleaning up the staging area hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201202121220_0002
12/02/12 12:21:08 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/02/12 12:21:08 INFO mapred.JobClient: Cleaning up the staging area hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201202121220_0003
12/02/12 12:21:08 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/02/12 12:21:08 INFO mapred.JobClient: Cleaning up the staging area hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201202121220_0004
12/02/12 12:21:08 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/02/12 12:21:08 INFO mapred.JobClient: Cleaning up the staging area hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201202121220_0005
12/02/12 12:21:08 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/02/12 12:21:08 INFO mapred.JobClient: Cleaning up the staging area hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201202121220_0006
12/02/12 12:21:08 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/02/12 12:21:08 INFO mapred.JobClient: Cleaning up the staging area hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201202121220_0007
12/02/12 12:21:08 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/02/12 12:21:08 INFO mapred.JobClient: Cleaning up the staging area hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201202121220_0008
12/02/12 12:21:08 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/02/12 12:21:08 INFO mapred.JobClient: Cleaning up the staging area hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201202121220_0009
12/02/12 12:21:08 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
12/02/12 12:21:08 INFO mapred.JobClient: Cleaning up the staging area hdfs://localhost:54310/app/hadoop/tmp/mapred/staging/hduser/.staging/job_201202121220_0010
-------------------------------
10 jobs failed
Exception in thread "main" java.lang.NullPointerException
    at org.apache.hadoop.mapred.GridMixRunner.getStatForJob(Unknown Source)
    at org.apache.hadoop.mapred.GridMixRunner.printStatsForJobs(Unknown Source)
    at org.apache.hadoop.mapred.GridMixRunner.run(Unknown Source)
    at org.apache.hadoop.mapred.GridMixRunner.main(Unknown Source)
    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)