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Jose Armando Garcia Sancio commented on KAFKA-14201: ---------------------------------------------------- [~hachikuji] [~dajac] Is this a blocker for 3.3.0? > Consumer should not send group instance ID if committing with empty member ID > ----------------------------------------------------------------------------- > > Key: KAFKA-14201 > URL: https://issues.apache.org/jira/browse/KAFKA-14201 > Project: Kafka > Issue Type: Bug > Reporter: Jason Gustafson > Assignee: David Jacot > Priority: Major > > The consumer group instance ID is used to support a notion of "static" > consumer groups. The idea is to be able to identify the same group instance > across restarts so that a rebalance is not needed. However, if the user sets > `group.instance.id` in the consumer configuration, but uses "simple" > assignment with `assign()`, then the instance ID nevertheless is sent in the > OffsetCommit request to the coordinator. This may result in a surprising > UNKNOWN_MEMBER_ID error. The consumer should probably be smart enough to only > send the instance ID when committing as part of a consumer group. -- This message was sent by Atlassian Jira (v8.20.10#820010)