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https://issues.apache.org/jira/browse/KAFKA-2566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14942347#comment-14942347
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Ismael Juma commented on KAFKA-2566:
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[~guozhang], I filed KAFKA-2608 to recommend the Scala 2.11 version on the
downloads page of the website. We list all the versions, so the only thing to
change is the recommendation that follows the list:
http://kafka.apache.org/downloads.html
> Improve Jenkins set-up
> ----------------------
>
> Key: KAFKA-2566
> URL: https://issues.apache.org/jira/browse/KAFKA-2566
> Project: Kafka
> Issue Type: Task
> Reporter: Ismael Juma
>
> There are currently two Jenkins jobs:
> https://builds.apache.org/job/Kafka-trunk
> https://builds.apache.org/job/kafka-trunk-git-pr
> They both run with Java 7 and execute the following gradle commands:
> ./gradlew -PscalaVersion=2.10.1 test
> ./gradlew -PscalaVersion=2.11 test
> There are a few issues with this:
> * We don't test Java 8 even though that's the only stable release of the JDK
> that still receives security fixes
> * We are testing with Scala 2.10.1 even though we should be testing with
> Scala 2.10.5
> * We are not doing clean builds
> * The versions tested are defined in Jenkins instead of the build
> I suggest the following:
> 1. Change the `kafka-trunk-git-pr` job to use the `./gradlew clean testAll`
> command.
> 2. Change the `Kafka-trunk` job to use the `./gradlew clean jarAll docsJarAll
> testAll` command.
> 3. Introduce a kafka-trunk-jdk8 job with the command `./gradlew clean jarAll
> docsJarAll testAll`
> We only test the PR job against Java 7 as it's executed much more often than
> the trunk job.
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