Hello Experts , We are observing issues in Partition(s) when the Kafka broker is down & the Partition Leader Broker ID set to -1.
Kafka Version 2.2.0 Total No Of Brokers: 24 Total No Of Partitions: 48 Replication Factor: 2 Min In sync Replicas: 1 Partition Leader Replicas In Sync Replicas [image: Screen Shot 2019-11-07 at 2.20.34 PM.png] See above the Partition 41 leader set to -1 , the replicas exist in 18,24. The broker id 24 went down for due to Too many open files. Q: Why is it not electing the broker 18 as a leader for Partition 41? Had a similar problem in Past, after fixing the broker the partition shows correct leader. Kafka Properties: default.replication.factor = 2 unclean.leader.election.enable = true min.insync.replicas = 1 num.partitions = 48 Zookeeper Active Broker ID's: [zk: localhost:2181(CONNECTED) 1] ls /kafka.test/brokers/ids [1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 3, 4, 5, 6, 7, 8, 9] [zk: localhost:2181(CONNECTED) 2] Restarting ZK also didn't help. Pls advise! How to fix this? Why is this happening?
