Hi guys, Recently I upgraded from Kafka 0.10 version to kafka 1.0 on one of the clusters. After the upgrade, we notice that for most of the topics's partitions ( if topic has 8 partitions, at least for 5 partitions) we have Leader : -1 and ISR : blank.
For example here is the example of describe output: Topic : <TopicName> Partition: 0 Leader -1 Replicas: 101, 102, 103, 104 ISR : Topic : <TopicName> Partition: 1 Leader -1 Replicas: 108, 105, 103, 103 ISR : For the Kafka upgrade, I followed this steps: - Stop kafka - Added inter.broker.protocol.version = 0.10.1 and log.message.format.version=0.10.1 Restarted all Kafka brokers Performed HDP upgrade. After express upgrade is complete, change the value for inter.broker.protocol.version to 1.0 and restarted Kafka brokers ( rolling) After rolling restart, changed value for log.message.format.version to 1.0 and save and restarted all kafka brokers ( rolling) - After this upgrade found that most of the topic partitions have no leaders and no ISRs. If someone has faced this or knows the solution, can you please share your ideas/steps to recover? Regards, Darpan
