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https://issues.apache.org/jira/browse/KAFKA-1747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14194984#comment-14194984
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Ewen Cheslack-Postava commented on KAFKA-1747:
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Created reviewboard https://reviews.apache.org/r/27535/diff/
against branch origin/trunk
> TestcaseEnv improperly shares state between instances
> -----------------------------------------------------
>
> Key: KAFKA-1747
> URL: https://issues.apache.org/jira/browse/KAFKA-1747
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8.1.1
> Reporter: Ewen Cheslack-Postava
> Attachments: KAFKA-1747.patch
>
>
> TestcaseEnv in system tests uses class variables instead of instance
> variables for a bunch of state. This causes the data to persist between
> tests. In some cases this can cause tests to break (e.g. there will be state
> from a service running in a previous test that doesn't exist in the current
> test; trying to look up state about that service raises an exception or
> produces invalid data).
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