Hi,
I have been using a 3 node kafka cluster for development for some time now. I
have created some topics on this cluster. Yesterday I observed the following
when I used 'describe' for the topics:
The Kafka version I'm using is: 9.0.1 (kafka_2.11-0.9.0.1).
Topic:topicIc PartitionCount:3 ReplicationFactor:3 Configs:
Topic: topicIc Partition: 0 Leader: 0 Replicas: 1,2,0 Isr:
0,2,1
Topic: topicIc Partition: 1 Leader: 0 Replicas: 2,0,1 Isr:
0,2,1
Topic: topicIc Partition: 2 Leader: 0 Replicas: 0,1,2 Isr:
2,0,1
Topic:topicR PartitionCount:3 ReplicationFactor:3 Configs:
Topic: topicR Partition: 0 Leader: 0 Replicas: 0,1,2 Isr:
2,0,1
Topic: topicR Partition: 1 Leader: 0 Replicas: 1,2,0 Isr:
0,2,1
Topic: topicR Partition: 2 Leader: 0 Replicas: 2,0,1 Isr:
0,2,1
Topic:topicSubE PartitionCount:1 ReplicationFactor:3 Configs:
Topic: topicSubE Partition: 0 Leader: 0 Replicas: 0,2,1
Isr: 0,2,1
Topic:topicSubIc PartitionCount:1 ReplicationFactor:3 Configs:
Topic: topicSubIc Partition: 0 Leader: 0 Replicas: 2,0,1
Isr: 0,2,1
Topic:topicSubLr PartitionCount:1 ReplicationFactor:3 Configs:
Topic: topicSubLr Partition: 0 Leader: 0 Replicas: 0,1,2
Isr: 2,0,1
Topic:topicSubR PartitionCount:1 ReplicationFactor:3 Configs:
Topic: topicSubR Partition: 0 Leader: 0 Replicas: 0,1,2
Isr: 2,0,1
As you would observe, the leader for all the partitions for all the topics is
just one node: Broker node 0. This is true even for the '__consumer_offsets'
topic.
The brokers are up and running on all the 3 nodes and the Zookeeper nodes are
also running fine.
Does anybody have any ideas as to why this may have happened?
Is there a way to manually trigger rebalance of partitions to the nodes?
Regards,
Rahul Misra
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