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https://issues.apache.org/jira/browse/MAPREDUCE-4117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13249868#comment-13249868
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Jonathan Eagles commented on MAPREDUCE-4117:
--------------------------------------------
Thanks for the patch Devaraj. One case I'm wondering about is when
getTaskFailureEventString is called on a Job with only
non-TaskCompletionEvent.Status.FAILED events. Seems like lastEvent will still
be null in that case.
> mapred job -status throws NullPointerException
> ----------------------------------------------
>
> Key: MAPREDUCE-4117
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4117
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: client, mrv2
> Affects Versions: 2.0.0, 3.0.0
> Reporter: Devaraj K
> Assignee: Devaraj K
> Priority: Critical
> Attachments: MAPREDUCE-4117.patch
>
>
> {code:xml}
> dev@ubuntudev-linux:~/hadoop/hadoop-trunk/bin$ ./mapred job -status
> job_1333408894669_0001
> Exception in thread "main" java.lang.NullPointerException
> at org.apache.hadoop.mapreduce.Job.getTaskFailureEventString(Job.java:512)
> at org.apache.hadoop.mapreduce.Job.toString(Job.java:463)
> at java.lang.String.valueOf(String.java:2838)
> at java.io.PrintStream.println(PrintStream.java:788)
> at org.apache.hadoop.mapreduce.tools.CLI.run(CLI.java:255)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:69)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:83)
> at org.apache.hadoop.mapred.JobClient.main(JobClient.java:1244)
> {code}
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