Enhance MultipleOutputs to allow additional characters in the named output name
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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
Priority: Minor
It 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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