Login to manage your account

Please enter a valid email address.
Forgot Password?
Please enter a valid password.
OR

Don't have an account yet? Sign up

What is a shuffle in a distributed processing engine?

  1. A Redistributing data across partitions, usually involving network transfer and disk writes
  2. B Randomising record order
  3. C Compressing data
  4. D Replicating blocks
Answer

Redistributing data across partitions, usually involving network transfer and disk writes

Wide transformations such as groupBy and join trigger shuffles, and minimising them is the main performance lever in Spark tuning.

All Big data MCQs

Login to manage your account

Please enter a valid email address.
Forgot Password?
Please enter a valid password.
OR

Don't have an account yet? Sign up as