Databricks Certified Associate Developer for Apache Spark — Question 210

If Spark is running in cluster mode, which of the following statements about nodes is incorrect?

Answer options

• A. The Spark driver runs in its own node without any executors.
• B. Each executor is a running processing engine inside of a worker node.
• C. There may be more executors than total nodes or more total nodes than executors.
• D. There is always more than one node.
• E. There is a single node that contains the Spark driver and the executors.

Correct answer: E

Explanation

The correct answer is E because, in a cluster mode setup, the Spark driver can run on a different node than the executors, allowing for distributed processing. Options A, B, C, and D are all true statements about the configuration and behavior of Spark in cluster mode.