Question

Point out the wrong statement.

(a) The Kafka cluster does not retain all published messages

(b) A single Kafka broker can handle hundreds of megabytes of reads and writes per second from thousands of clients

(c) Kafka is designed to allow a single cluster to serve as the central data backbone for a large organization

(d) Messages are persisted on disk and replicated within the cluster to prevent data loss

I had been asked this question in quiz.

This key question is from Kafka with Hadoop in chapter Oozie, Orchestration, Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications of Hadoop

Answer 1

The correct answer is (a) The Kafka cluster does not retain all published messages

To explain I would say: The Kafka cluster retains all published messages—whether or not they have been consumed—for a configurable period of time.