Hi, I want to call map operations by using inputs which one is from a file and the other one is from a cassandra.
I know the ways to get file inputs files from a directory or input datas from a cassandra. but, I am not sure a way to get each input from them is possible. here is more hints to describe my situation. data format is same. a file like this: key value1 value2 value3 ... a cassandra column structure like this: key column | column name1 | column name 2 | column name 3 key value | column value1| column vlaue2 | column value 3 ... I need to extract a line from them and then do compare datas based on each key. finally, I can get duplicate keys or new keys or deleted keys. thanks. -- JunYoung Kim
