pig latin - load with text qualifier -

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i trying load datafile in pig latin script, data has 2 columns there text qualifier in 2nd column , sample data below :

device_id,supported_tech a2334,"gsm900,gsm1500,gsm200" a54623,"gsm900,gsm1500" a86646,"gsm1500,gsm200"

when try loading date below, 2nd column not recognized 1 column

devicelist = load 'devicelist.csv' using pigstorage(',') (device_id:chararray, supported_tech:chararray );

how can define text qualifier while loading data set ?

try , let me know if need different output format

input.txt

device_id,supported_tech a2334,"gsm900,gsm1500,gsm200" a54623,"gsm900,gsm1500" a86646,"gsm1500,gsm200

pigscript:

a = load 'input.txt' line; devicelist = foreach generate flatten(regex_extract_all(line,'^(\\w+),(.*)$')) (device_id:chararray, supported_tech:chararray ); dump devicelist;

output:

(device_id,supported_tech) (a2334,"gsm900,gsm1500,gsm200") (a54623,"gsm900,gsm1500") (a86646,"gsm1500,gsm200")

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