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https://issues.apache.org/jira/browse/KAFKA-1888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14355921#comment-14355921
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Abhishek Nigam commented on KAFKA-1888:
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Hi Gwen,
I am not sure why the link is not showing up. Here you go:
https://reviews.apache.org/r/30809/
> 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: Abhishek Nigam
> 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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