data.pig

A = LOAD '/data/twitter/twitter_10.json' USING JsonLoader('created_at:chararray, id:long,id_str:chararray,text:chararray,source:chararray,truncated:boolean, in_reply_to_status_id:long, in_reply_to_status_id_str:chararray, in_reply_to_user_id:long, in_reply_to_user_id_str:chararray, in_reply_to_screen_name:chararray,user:map[],geo:chararray,coordinates:chararray,place:chararray');

B = FOREACH A GENERATE user;
DUMP B;