There is a data of 50 million users, and there is a record of 200 million users watching movies. With only 1G of memory, find the top 1000 users who watch the most movies?
What should I do?
There is a data of 50 million users, and there is a record of 200 million users watching movies. With only 1G of memory, find the top 1000 users who watch the most movies?
What should I do?