Kafka Consumer does not receive data when one of the brokers is down

Question

Kafka Quickstart
Using Kafka v2.1.0 on RHEL v6.9

Consumer fails to receive data when one of the Kafka brokers is down.

Steps performed:
1. Start

Answer 1

If the offsets topic is unavailable, you cannot consume.

Look at the server.properties file for these, and see the comment above, and increase accordingly (only applies if topic doesn't already exist)

# The replication factor for the group metadata internal topics "__consumer_offsets" and "__transaction_state"
# For anything other than development testing, a value greater than 1 is recommended for to ensure availability such as 3.
offsets.topic.replication.factor=1
transaction.state.log.replication.factor=1

According to your previous question, looks like it only has one replica

See how you can increase replication factor for an existing topic