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MapReduce, mail # user - Collecting error messages from Mappers

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Collecting error messages from Mappers
Terry Healy 2012-10-08, 14:13

Is there a simple way for error output / debug information generated by
a Mapper to be collected in one place for a given M/R job run? I guess
what I'm hoping for is sort of the reverse of a Distributed Cache function.

Can anyone suggest an approach?


Bertrand Dechoux 2012-10-08, 14:32