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https://issues.apache.org/jira/browse/KAFKA-3401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ismael Juma updated KAFKA-3401:
-------------------------------
Fix Version/s: (was: 0.10.0.0)
> 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
> Attachments: 2016-03-15--009.zip
>
>
> 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}
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