using sqlite3dbm with mrjob for map reduce

Question

I have a sqlite3dbm which store data in key-value pair. I need to process it using mrjob. When I run my code xyz.py my_db.db, mapper fn doesn't work properly.

def mapper(k,val):
  for word in val:
     yield(word,k)

I get null for k

Answer 1

Check this. You need to configure to your job appropriately to read from a database file.