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https://issues.apache.org/jira/browse/MAPREDUCE-2492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13038134#comment-13038134
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Tom White commented on MAPREDUCE-2492:
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> I think it makes sense to have Reporter provide the task's progress to the
> map/reduce task attempts. I would prefer marking this change as incompatible.
It's certainly an improvement, but does it warrant an incompatible change to an
interface marked as stable? There may be an argument that it does, but I would
have expected to see some discussion about this before it was committed. Why
not only change the new API and tell users that they need to use that one if
they want to use this feature?
> [MAPREDUCE] The new MapReduce API should make available task's progress to
> the task
> -----------------------------------------------------------------------------------
>
> Key: MAPREDUCE-2492
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2492
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: task
> Affects Versions: 0.23.0
> Reporter: Amar Kamat
> Assignee: Amar Kamat
> Fix For: 0.23.0
>
> Attachments: MAPREDUCE-2492-v1.3.patch, MAPREDUCE-2492-v1.4.patch,
> MAPREDUCE-2492-v1.5.patch, MAPREDUCE-2492-v1.6.patch,
> MAPREDUCE-2492-v1.7.patch
>
>
> There is no way to get the task's current progress in the new MapReduce API.
> It would be nice to make it available so that the task (map/reduce) can use
> it.
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