getting following messages in the kafka logs, is this related to data loss org.apache.kafka.common.errors.NotEnoughReplicasException: Number of insync replicas for partition [__consumer_offsets,18] is [1], below required minimum [3]

[#1 · Accepted solution]

@akshay singh

The error indicates that your replication is falling behind,this exception doesn't really imply that a broker is down, it can likewise mean that an excessive number of copies for that topic partition have fallen behind the leader with some reason.

[#2]

Configure your replication higher https://cwiki.apache.org/confluence/display/KAFKA/Replication+tools

You probably need more replicas for faster throughput

https://www.confluent.io/blog/how-to-choose-the-number-of-topicspartitions-in-a-kafka-cluster/