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https://issues.apache.org/jira/browse/KAFKA-4401?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15836729#comment-15836729
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Ewen Cheslack-Postava commented on KAFKA-4401:
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[~becket_qin] I would actually like to eventually propose in a KIP that we make
some of these public since so many people are already relying on them/copying
them in Java/etc :) So when we go through adding a Java version it'd be great
to keep an eye on the public interface, exposing only what we need and ensuring
it's sufficiently general.
> Change the KafkaServerTestHarness and IntegrationTestHarness from trait to
> abstract class.
> ------------------------------------------------------------------------------------------
>
> Key: KAFKA-4401
> URL: https://issues.apache.org/jira/browse/KAFKA-4401
> Project: Kafka
> Issue Type: Task
> Components: unit tests
> Affects Versions: 0.10.1.0
> Reporter: Jiangjie Qin
> Assignee: Jiangjie Qin
>
> The IntegartionTestHarness and KafkaServerTestHarness are useful not only in
> Kafka unit test, but also useful for the unit tests in other products that
> depend on Kafka.
> Currently there are two issues making those two test harness classes hard to
> use by other Java users.
> 1. The two classes are Scala traits. This makes it difficult for people to
> write Java unit test code.
> 2. Some of the interfaces are Scala only.
> It will be good to expose those two classes for more general usage and make
> them Java friendly.
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