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Posted to common-user@hadoop.apache.org by Chris MacKenzie <st...@chrismackenziephotography.co.uk> on 2014/06/25 15:07:14 UTC
Splitting map and reduce
Hi,
This is my first mail to this user group. I hope that the email is well
formed and enables me to learn a great deal about Hadoop.
I have to carry out sequence alignment using Hadoop with the aid of a
critical subsequence. A potential critical subsequence is derived from the
longest unique subsequence in a sequence. A valid critical subsequence must
exist in one or more sequences.
I have run a concordance with a line splitter and have able to get "Map
input records=10² Which leads me to believe I can assess each sequence
independently.
I was hoping to get 10 reduce outputs but I only got one. Is there a way to
split the reduce output in the same way that I can split the map input.
Thanks in advance,
Regards,
Chris MacKenzie