pupose :
it copies data from rdbms to rdbms using spark,
source_table_name --> sourcer table name
source_driver --> driver name
source_user --> user name
source_password --> password
source_columns --> if needs to selct few coulumns provide column name here
source_jdbc --> jdbc url for source
target_table_name --> target table name
target_driver --> target driver
target --> true/false true for jdbc
target_user --> user name
target_password --> password
target_columns --> columns
target_jdbc --> target jdbc url
source_table_where_condition_column --> table where condition column to selct fewer rows
overloading_table --> yes/no yes to bring full load, no to bring limited load
sourcer_condition_column_type ---> coulmn data type