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Hadoop, mail # user - executing map/reduce and different file's format


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executing map/reduce and different file's format
Oleg Ruchovets 2011-07-12, 08:31
Hi ,

    I have to run map/reduce job. Inputs to this job will be files with
different formats .
question:
       processing line from file , how can I check (know)  from which  file
this line was read?

Thanks in advance
Oleg.