\n <\/td>\n | #!/usr/bin/env ruby<\/span><\/td>\n <\/tr>\n \n <\/td>\n | require<\/span> 'mongo-hadoop'<\/span><\/td>\n <\/tr>\n \n <\/td>\n | \n<\/td>\n <\/tr>\n | \n <\/td>\n | MongoHadoop<\/span>.<\/span>map<\/span> do<\/span> |document<\/span>|<\/td>\n <\/tr>\n \n <\/td>\n | {<\/span> :_id<\/span> =><\/span> document<\/span>[<\/span>'user'<\/span>]<\/span>[<\/span>'time_zone'<\/span>]<\/span>,<\/span> :count<\/span> =><\/span> 1<\/span> }<\/span><\/td>\n <\/tr>\n \n <\/td>\n | end<\/span><\/td>\n <\/tr>\n <\/table>\n<\/div>\n\n\n <\/div>\n\n <\/div>\n<\/div>\n\n <\/div>\n | | | | |