Ryan P created KAFKA-5091:
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Summary: ReassignPartitionsCommand should protect against empty
replica list assignment
Key: KAFKA-5091
URL: https://issues.apache.org/jira/browse/KAFKA-5091
Project: Kafka
Issue Type: Improvement
Components: tools
Reporter: Ryan P
Currently it is possible to lower a topics replication factor to 0 through the
use of the kafka-reassign-partitions command.
i.e.
cat increase-replication-factor.json
{"version":1,
"partitions":[{"topic":"foo","partition":0,"replicas":[]}]}
kafka-reassign-partitions --zookeeper localhost:2181 --reassignment-json-file
increase-replication-factor.json --execute
Topic:test PartitionCount:1 ReplicationFactor:0 Configs:
Topic: foo Partition: 0 Leader: -1 Replicas: Isr:
I for one can't think of a reason why this is something someone would do
intentionally. That said I think it's worth validating that at least 1 replica
remains within the replica list prior to executing the partition reassignment.
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