Re: Kafka Failing to start due to existing ID

2018-06-12 Thread Brian Lininger
Hi Harish, I think I see what may be the problem for you. Based on your initial description (6 ZK nodes, 3 down) I think the problem is that you no longer have a quorum. When a Zookeeper cluster is running, updates (i.e. removing znodes) can only occur when Zookeeper has a quorum, which 50.1% of

Kafka Failing to start due to existing ID

2018-06-12 Thread harish lohar
Hi All, Need help regarding below scenario if any configuration is available to help. I have cluster of 6 nodes 3 Nodes are stopped and brought up again, kafka fails to restart since broker ID are still present in zookeeper znode /broker/ids/ Since the cluster goes down after removing 3 Nodes