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https://issues.apache.org/jira/browse/KAFKA-1888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14291340#comment-14291340
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Neha Narkhede commented on KAFKA-1888:
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This is a very useful test. However, I'd recommend at least looking into the
system test framework before deciding on adding yet another way to do write a
Kafka test. It will be helpful to see a summary of why this cannot be done
using the existing system test framework. Arguably, there may be another way to
design the system test framework which is easier to use, but given that we have
the current one, we should know what it doesn't support so we can address that
in the next redesign of the test framework :)
> Add a "rolling upgrade" system test
> -----------------------------------
>
> Key: KAFKA-1888
> URL: https://issues.apache.org/jira/browse/KAFKA-1888
> Project: Kafka
> Issue Type: Improvement
> Components: system tests
> Reporter: Gwen Shapira
> Assignee: Gwen Shapira
> Fix For: 0.9.0
>
>
> To help test upgrades and compatibility between versions, it will be cool to
> add a rolling-upgrade test to system tests:
> Given two versions (just a path to the jars?), check that you can do a
> rolling upgrade of the brokers from one version to another (using clients
> from the old version) without losing data.
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