Sorry for the wrong phrasing of question. I am new to clouderaas well as I am completely new to PIG and trying to experiment on my own.   I have a scenario where to process the words.t file and data.txt file.   words.txt word1 word2 word3 word4 data.txt {"created_at":"18:47:31,Sun Sep 30 2012","text":"RT @Joey7Barton: ..give a word1 about whether the americans wins a Ryder cup. I mean surely he has slightly more important matters. #fami ...","user_id":450990391,"id":252479809098223616} I need to get the output as (word1_epochtime){complete data which matched in text attribute} i.e (word1_1234567890){{"created_at":"18:47:31,Sun Sep 30 2012","text":"RT @Joey7Barton: ..give a word1 about whether the americans wins a Ryder cup. I mean surely he has slightly more important matters. #fami ...","user_id":450990391,"id":252479809098223616} I have got the ouput as (word1){"created_at":"18:47:31,Sun Sep 30 2012","text":"RT @Joey7Barton: ..give a word1 about whether the americans wins a Ryder cup. I mean surely he has slightly more important matters. #fami ...","user_id":450990391,"id":252479809098223616} by using this script. load words.txt load data.txt c = cross words,data; d = FILTER c BY (data::text MATCHES CONCAT(CONCAT('.*',words::word),'.*')); e = foreach (group d BY word) {data); and I got the epochtime with the words as time = FOREACH words GENERATE CONCAT(CONCAT(word,'_'),(chararray)ToUnixTime(CurrentTime(created_at))); But I am unable to CONCAT the words with time. How can i get the output as (word1_epochtime){data} Please feel free to suggest me for the above.   Thank you. ... View more