mysql to redshift datatype mapping for bigint causing overflow error

[Atif8Ted]

pipelinewise-target-redshift/target_redshift/db_sync.py

Line 72 in 80796b6

elif 'integer' in property_type:

I have a column of datatype bigint(20) in the MySQL database. And this is mapped as numeric(18,0) datatype in Redshift.
And this is causing overflow error. We might need to map it to bigint datatype to solve this issue.
Similar issue is discussed here :
datamill-co/target-redshift#39