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https://issues.apache.org/jira/browse/HADOOP-5201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12672190#action_12672190
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Owen O'Malley commented on HADOOP-5201:
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-1 because we can't guarantee that the exceptions exist in the other context.
We could use RemoteException that keeps the class name and exception string
separate, but they may not all be exceptions. (The framework can add strings
there obviously. I don't remember if it currently does so or not.)
> getDiagnostics in TaskReport should return exceptions
> -----------------------------------------------------
>
> Key: HADOOP-5201
> URL: https://issues.apache.org/jira/browse/HADOOP-5201
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: Santhosh Srinivasan
>
> Currently, getDiagnostics() returns Strings. When exceptions are thrown in
> user code and/or Hadoop, it would be cleaner to propagate the exception back
> to the application for better error handling. Hadoop should return the
> exceptions instead of returning string representations that correspond to
> printStackTrace() output.
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