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https://issues.apache.org/jira/browse/MAPREDUCE-2293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harsh J updated MAPREDUCE-2293:
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Attachment: mapreduce.mo.removecheck.r4.diff
Rebased patch to current trunk. Still holds good.
Any further comments on patch anyone? This has fairly good user demand even
today, given that MultipleOutputs lacks extensibility due to various static
methods.
> Enhance MultipleOutputs to allow additional characters in the named output
> name
> -------------------------------------------------------------------------------
>
> Key: MAPREDUCE-2293
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2293
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 0.21.0
> Reporter: David Rosenstrauch
> Assignee: Harsh J
> Priority: Minor
> Fix For: 0.24.0
>
> Attachments: mapreduce.mo.removecheck.r1.diff,
> mapreduce.mo.removecheck.r2.diff, mapreduce.mo.removecheck.r3.diff,
> mapreduce.mo.removecheck.r4.diff
>
>
> Currently you are only allowed to use alpha-numeric characters in a named
> output name in the MultipleOutputs class. This is a bit of an onerous
> restriction, as it would be extremely convenient to be able to use non
> alpha-numerics in the name too. (E.g., a '.' character would be very
> helpful, so that you can use the named output name for holding a file
> name/extension. Perhaps '-' and a '_' characters as well.)
> The restriction seems to be somewhat arbitrary - it appears to be only
> enforced in the checkTokenName method. (Though I don't know if there's any
> downstream impact by loosening this restriction.)
> Would be extremely helpful/useful to have this fixed though!
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