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https://issues.apache.org/jira/browse/CRUNCH-306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13835500#comment-13835500
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Micah Whitacre commented on CRUNCH-306:
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Agreed the latter seemed ambitious and potentially difficult to encapsulate.
For the case we are talking I was thinking that the MultipleOutputs would most
likely need to take in a MapFn that translates the keys into the configuration
for the target. So in the case of a file target most likely it would take the
form or MapFn<?, Path>.
> MultipleOutput Targets
> ----------------------
>
> Key: CRUNCH-306
> URL: https://issues.apache.org/jira/browse/CRUNCH-306
> Project: Crunch
> Issue Type: Bug
> Components: IO
> Reporter: Josh Wills
>
> A commonly desired feature for Crunch is the ability to write an output file
> for each key in a PTable/PGroupedTable containing the values associated with
> that key. We should find a way to support that one-output-per-key model.
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