Eno Thereska created KAFKA-3401: ----------------------------------- Summary: Message format change on the fly breaks 0.9 consumer Key: KAFKA-3401 URL: https://issues.apache.org/jira/browse/KAFKA-3401 Project: Kafka Issue Type: Bug Affects Versions: 0.10.0.0 Reporter: Eno Thereska Assignee: Jiangjie Qin Priority: Blocker Fix For: 0.10.0.0
The new system test as part of KAFKA-3202 reveals a problem when the message format is changed on the fly. When the cluster is using 0.10.x brokers and producers and consumers use version 0.9.0.1 an error happens when the message format is changed on the fly to version 0.9: {code} Exception: {'ConsoleConsumer-worker-1': Exception('Unexpected message format (expected an integer). Message: null',)} {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)