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Ismael Juma commented on KAFKA-5329: ------------------------------------ Are you sure that this is an issue [~becket_qin]? We rely on ControllerContext.partitionReplicaAssignment for the cases where the order matters and that does not use a Set. Also see https://github.com/apache/kafka/pull/900 > Replica list in the metadata cache on the broker may have different order > from zookeeper > ---------------------------------------------------------------------------------------- > > Key: KAFKA-5329 > URL: https://issues.apache.org/jira/browse/KAFKA-5329 > Project: Kafka > Issue Type: Bug > Affects Versions: 0.10.2.1 > Reporter: Jiangjie Qin > Labels: newbie > Fix For: 0.11.0.1 > > > It looks that in {{PartitionStateInfo}} we are storing the replicas in a set > instead of a Seq. This causes the replica order to be lost. In most case it > is fine, but in the context of preferred leader election, the replica order > determines which replica is the preferred leader of a partition. It would be > useful to make the order always be consistent with the order in zookeeper. -- This message was sent by Atlassian JIRA (v6.3.15#6346)