Scan having the option to pass FIlters and filter the rows based on the filter.
But for deleting rows, there is no easy way to pass the filters to Delete Object.
We can do that using below three approach
1) Scan the records and create list of Delete object and do the delete. This needs iteration in client side.
2) Writing map reduce
If we implement the option of passing filters in Delete Object, then we dont need to worry about option 2 and 3.