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https://issues.apache.org/jira/browse/HADOOP-5541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683910#action_12683910
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Owen O'Malley commented on HADOOP-5541:
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Please make it a list of strings, so that messages aren't lost when the next
one comes in.
> Place holder for job level diagnostic information
> -------------------------------------------------
>
> Key: HADOOP-5541
> URL: https://issues.apache.org/jira/browse/HADOOP-5541
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Vinod K V
>
> In some scenarios, when framework itself fails/kills the job, there is no
> clear way for the user to know what happened to the job. A job level
> diagnostic string, perhaps displayed in JobStatus when queried from command
> line or view from the web ui would help. Two cases I can think of:
> - When a job is failed when it transgresses
> mapred.jobtracker.maxtasks.per.job.
> - When CapacityScheduler kills a job when it detects that the job's memory
> requirements can never be meant.
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