Dear Kafka Community, I'm hoping you can help with kafka topic partition that is missing a leader. The topic in question is the '__consumer_offsets' topic
The output of a '--describe' on that topic looks like: Topic: __consumer_offsets Partition: 7 Leader: none Replicas 5 Isr: 5 Topic: __consumer_offsets Partition: 11 Leader: none Replicas 5 Isr: 5 The other 48 partitions are all ok and have an assigned leader (some with 5 as the leader). I have tried running a --reassignment-json-file against the topic .e.g kafka-reassign-partitons.sh --bootstrap-server localhost:9092 --reassignment-json-file /<reassignmentfilename>.json --execute but the reassignment just hangs, with the two partitions that are missing a leader reporting: 'Reassignment of partition __consumer_offsets-7 is still in progress' I've since had to --cancel that reassignment Can anyone advise on how I can overcome the issue of this missing leader please? My eventual goal is to reassign this __consumer_offsets topic with a replication factor of 3 to increase resiliency now that the cluster is in production. I realise we should have set the offets.topic.replication.factor to a value higher than 1 before we spun up the prod cluster but this was missed so we're now looking to manually reassign the __consumer_offsets with a higher replication factor. Any advice on how to overcome this 'Leader: none' issue would be greatly appreciated. Many thanks, Tom
