pgr_nodeNetwork returns old_id as int and not bigint

[amandhaka]

I am using pgr_nodeNetwork('edges', 0.001, 'id', 'geom', 'noded', '', f) to create the paths network. Since the table is being re-generated multiple times the value of old_id in resulting table have cross integer limit and is giving error

Where: SQL statement "INSERT INTO public."edges_node_network" (old_id,sub_id,geom) ( WITH cut_locations AS
org.postgresql.util.PSQLException: ERROR: integer out of range

I am generating a new table as partition every time and later on attaching it to the parent table. I have changed the datatype of old_id as bigint in parent table but while generating new one it's giving integer out of range error. How to solve this?

Also, how is this old_id generated, many times I have noticed it remains unchanged if we execute the pgr_nodeNetwork multiple times.

Below is the example of table generated with old_id as integer. I have printed the column_name and it's type for the resulting table.

id	bigint
old_id	integer
sub_id	integer
source	bigint
target	bigint
geom	USER-DEFINED