hadoop - Compare tuples on basis of a field in pig -

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(abc,****,tool1,12) (abc,****,tool1,10) (abc,****,tool1,13) (abc,****,tool2,101) (abc,****,tool3,11)

above input data

following dataset in pig.

schema : username,ip,tool,duration

i want add duration of same tools

output

(abc,****,tool1,35) (abc,****,tool2,101) (abc,****,tool3,11

use group , use sum on duration.

a = load 'data.csv' using pigstorage(',') (username:chararray,ip:chararray,tool:chararray,duration:int); b = group (username,ip,tool); c = foreach b generate flatten(group) (username,ip,tool),sum(a.duration); dump c;

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