hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Afflictedd2 <flethu...@gmail.com>
Subject Filtering while mapping or reducing?
Date Sun, 10 Apr 2011 15:29:27 GMT

Hi everyone,

I need to add the frequencies of two elements with the same last letter,
I don't want single elements in the output of this map reduce. I don't know
the filtering of those elements should either be done in the mapping
function or
the reduce function?

For example, if I have the following pairs:


I want the following pairs out


but I don't want E and F in my final result of reduced pairs

View this message in context: http://old.nabble.com/Filtering-while-mapping-or-reducing--tp31364272p31364272.html
Sent from the Hadoop core-user mailing list archive at Nabble.com.

View raw message