I am working on a big data project. I want to mock large volume of data for testing our application. I could see that there are certain portals (like mockaroo.com) which will help to mock the data. However customizing the variables to suit our application is not possible here, as far as i have seen. I am looking for a place where i can mock large volume of data with customized variables.
Can you please help me how and where should i look about?