I was trying to join the two fields of a single csv file and merge that fields into a third field in the same csv file. i am using the updateRecord attribute for that. but i don't know how to use record reader and record writer. Do i have to enter the schema in both reader and writer?? can anyone explain this step by step. i already gone through user guide, still i am feeling so confused.
Do we have to first convert the csv to json inorder to convert that to schema??