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https://issues.apache.org/jira/browse/KAFKA-19647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax updated KAFKA-19647:
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Component/s: streams
> Implement integration test for offline migration
> ------------------------------------------------
>
> Key: KAFKA-19647
> URL: https://issues.apache.org/jira/browse/KAFKA-19647
> Project: Kafka
> Issue Type: Sub-task
> Components: streams
> Reporter: Lucas Brutschy
> Assignee: Lucas Brutschy
> Priority: Major
>
> In https://issues.apache.org/jira/browse/KAFKA-19570 we implemented offline
> migration between groups, that is, the following integration test or system
> test should be possible:
> Test A:
> * Start a streams application with classic protocol, process up to a certain
> offset and commit the offset and shut down.
> * Start the same streams application with streams protocol (same app ID!).
> * Make sure that the offsets before the one committed in the first run are
> not reprocessed in the second run.
>
> Test B:
> * Start a streams application with streams protocol, process up to a certain
> offset and commit the offset and shut down.
> * Start the same streams application with classic protocol (same app ID!).
> * Make sure that the offsets before the one committed in the first run are
> not reprocessed in the second run.
>
> We have unit tests that make sure that non-empty groups will not be
> converted. This should be enough.
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