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https://issues.apache.org/jira/browse/KAFKA-12459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17300036#comment-17300036
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Lucas Bradstreet commented on KAFKA-12459:
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It might be worth considering looking at how much work it'd be to switch these
tests over to a property testing library as that will give you the seed
behavior you want, and will give you the additional benefit of shrinking the
inputs when there's a failure.
> Improve raft simulation tests
> -----------------------------
>
> Key: KAFKA-12459
> URL: https://issues.apache.org/jira/browse/KAFKA-12459
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Jason Gustafson
> Priority: Major
>
> A couple small suggestions to improve the event simulation tests (courtesy of
> [~enether]):
> 1. When a test fails, ensure that the random number seed is displayed in the
> output so that it can be reproduced.
> 2. Once we have done the first one, then using non-deterministic seeds would
> be a good idea since we can get a bigger benefit out of repeated builds.
> 3. It is a bit painful today to reproduce failures since each test case runs
> multiple random seeds. It would be helpful to have a convenient way to run a
> test with a specific seed.
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