[ https://issues.apache.org/jira/browse/KAFKA-14849?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
zou shengfu updated KAFKA-14849: -------------------------------- Description: # At first, we modify the group.instance.id for consumers wrongly, so different consumers have the same group.instance.id for a while. 2. After we rollbak the configuration about group.instance.id, consumers receive INCONSISTENT_GROUP_PROTOCOL error even the configuration of all consumers is same 3. Coordinator of this group accepts ten thousands of join group request from consumers !screenshot-1.png! 4. Consumers can get message normally after restarting the coordinator of this group. I have upload the log about kafka broker and the group name is mario_ad_stats_alo_va I want to know why consumer receive INCONSISTENT_GROUP_PROTOCOL error even configuration of all consumers are same after rollbacking the modification about group.instance.id, and I use the static membership and cooperative rebalance at the same time was: # At first, we modify the group.instance.id for consumers wrongly, so different consumers have the same group.instance.id for a while. 2. After we rollbak the configuration about group.instance.id, consumers receive INCONSISTENT_GROUP_PROTOCOL error even the configuration of all consumers is same 3. Coordinator of this group accepts ten thousands of join group request from consumers !screenshot-1.png! 4. Consumers can get message normally after restarting the coordinator of this group. I have upload the log about kafka broker and the group name is mario_ad_stats_alo_va I want to know why consumer receive INCONSISTENT_GROUP_PROTOCOL error even configuration of all consumers are same after rollbacking the modification about group.instance.id. > Kafka consumers receive INCONSISTENT_GROUP_PROTOCOL error even the > configuration of all consumers is same > --------------------------------------------------------------------------------------------------------- > > Key: KAFKA-14849 > URL: https://issues.apache.org/jira/browse/KAFKA-14849 > Project: Kafka > Issue Type: Bug > Components: consumer > Affects Versions: 2.5.1 > Reporter: zou shengfu > Priority: Major > Attachments: screenshot-1.png, xaa, xab > > > # At first, we modify the group.instance.id for consumers wrongly, so > different consumers have the same group.instance.id for a while. > 2. After we rollbak the configuration about group.instance.id, consumers > receive INCONSISTENT_GROUP_PROTOCOL error even the configuration of all > consumers is same > 3. Coordinator of this group accepts ten thousands of join group request from > consumers > !screenshot-1.png! > 4. Consumers can get message normally after restarting the coordinator of > this group. I have upload the log about kafka broker and the group name is > mario_ad_stats_alo_va > I want to know why consumer receive INCONSISTENT_GROUP_PROTOCOL error even > configuration of all consumers are same after rollbacking the modification > about group.instance.id, and I use the static membership and cooperative > rebalance at the same time -- This message was sent by Atlassian Jira (v8.20.10#820010)