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https://issues.apache.org/jira/browse/MAPREDUCE-2661?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13062055#comment-13062055
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Josh Wills commented on MAPREDUCE-2661:
---------------------------------------
+1
An optional thought: add a comment to the definition of the getSplitsAsString()
method in TaskImpl.java to specify that it will return the empty string for
reduce tasks since they don't have splits.
> Accessing MapTaskImpl from TaskImpl
> -----------------------------------
>
> Key: MAPREDUCE-2661
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2661
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Reporter: Ahmed Radwan
> Assignee: Ahmed Radwan
> Priority: Minor
> Attachments: MAPREDUCE-2661.patch
>
>
> We are directly accessing MapTaskImpl in
> TaskImpl.InitialScheduleTransition.transition(..). It'll be better to
> reorganize the code so each subclass can provide its own behavior instead of
> explicitly checking for the subclass type.
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