I need python code which can do the following,Convert nested or complex JSON file to CSV file with respect to a schema file( schema file contains the keys required to be kept inside ) Before convertin

I need python code which can do the following,Convert nested or complex JSON file to CSV file with respect to a schema file( schema file contains the keys required to be kept inside )

Before converting the file, if the file is huge it needs to split into small files and there should not be any memory exceptions while processing the huge file while converting to csv from json.

Once the files are split, then each file needs to be processed in parallel using multiprocess.