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From Shailesh Hemdev <shailesh.hem...@foresee.com>
Subject Kafka Errors and Hung Brokers
Date Wed, 14 Dec 2016 02:53:02 GMT
We are using a 3 node Kafka cluster and are encountering some weird issues.

1) On Each node, when we tail the server.log file under /var/log/kafka we
see continuous errors like these

pic-partition. (kafka.server.ReplicaFetcherThread)
[2016-12-14 02:39:30,747] ERROR [ReplicaFetcherThread-0-4410000], Error for
partition [dev-core-platform-logging,15] to broker 4410000:org.apache.kafka.
common.errors.NotLeaderForPartitionException: This server is not the leader
for that topic-partition. (kafka.server.ReplicaFetcherThread)

The broker is up and is showing under zookeeper. So it is not clear why
these errors occur

2) Occasionally we will find a Kafka broker that goes down. We have
adjusted the Ulimit to increase open files as well as added 6g to the heap.
When the broker goes down, the process is itself up but is de registered
from Zookeeper


*Shailesh *


*Shailesh Hemdev*
Manager, Software Engineering
p (734) 352-6247


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