Django and Node processes for the same domain
Scenario A
You create a url in django ^v2/.*$ and then make a request from django view to node.js process. this way django can handle user auth and permissions and node can be standalone and not know anything about user auth. If you need user data (id or something) you can inject it in the request as a header or a cookie. 
Scenario B
You dig into django REST OAuth implementation, find where tokens are stored in db, and on each request you take the oauth token from the header/cookie and compare it to the one in DB. You would have to setup nginx as a reverse proxy and route all traffic that goes on url /v1/.*$ to django app, and all traffic that goes to /v2/.*/ to node app.
Either options are doable but I would suggest Scenario A. It's easier, quicker and far less error prone.
Hi I have two process 

Django and MYSQL 
node/express and mongo db.

1.
How can I configure this two process to point to different url
like. Django point to api.abc.com/v1 and node point to api.abc.com/v2 ?
2.
all my user login is inside Django and MYSQL with OAuth. I can authenticate user in Django.
But how can authenticate user in nodejs app with the token send by Django REST OAuth ?
Thanks.