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https://issues.apache.org/jira/browse/MAPREDUCE-2016?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ranjit Mathew reassigned MAPREDUCE-2016:
----------------------------------------
Assignee: Amar Kamat (was: Ranjit Mathew)
> GridMix throws an ArithmeticException error when tasktracker count is zero
> while generating the data.
> -----------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-2016
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2016
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/gridmix
> Affects Versions: 0.20.1
> Reporter: Vinay Kumar Thota
> Assignee: Amar Kamat
>
> GridMix throws an ArithmeticException error when tasktracker count is zero.
> In generating data, while calculating the bytes per task tracker in getSplit
> method, throws an exception if tasktracker count is zero. Actually bytes are
> calculating by dividing the number of task trackers in the cluster. So we
> need to build the better exception handling for these kinds of cases. Should
> add a condition (count should be >0) for tasktracker count before calculating
> the bytes per tasktracker.
> 10/08/12 08:33:34 INFO gridmix.JobSubmitter: Job
> org.apache.hadoop.mapreduce.Job@18a8ce2 submission failed
> java.lang.ArithmeticException: / by zero
> at
> org.apache.hadoop.mapred.gridmix.GenerateData$GenDataFormat.getSplits(GenerateData.java:161)
> at
> org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:902)
> at org.apache.hadoop.mapred.JobClient.writeSplits(JobClient.java:919)
> at org.apache.hadoop.mapred.JobClient.access$5(JobClient.java:913)
> at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:838)
> at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:1)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1021)
> at
> org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:792)
> at org.apache.hadoop.mapreduce.Job.submit(Job.java:465)
> at
> org.apache.hadoop.mapred.gridmix.GenerateData$1.run(GenerateData.java:116)
> at
> org.apache.hadoop.mapred.gridmix.GenerateData$1.run(GenerateData.java:101)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1021)
> at
> org.apache.hadoop.mapred.gridmix.GenerateData.call(GenerateData.java:101)
> at
> org.apache.hadoop.mapred.gridmix.GenerateData.call(GenerateData.java:57)
> at
> org.apache.hadoop.mapred.gridmix.JobSubmitter$SubmitTask.run(JobSubmitter.java:106)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
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