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Posted to dev@kafka.apache.org by "Ismael Juma (JIRA)" <ji...@apache.org> on 2017/06/08 09:18:18 UTC
[jira] [Commented] (KAFKA-4501) Support Java 9
[ https://issues.apache.org/jira/browse/KAFKA-4501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16042438#comment-16042438 ]
Ismael Juma commented on KAFKA-4501:
------------------------------------
I had a quick look at making the build work with Java 9 by using the various escape hatches available. We get a NPE from Zinc (Scala incremental compiler used by Gradle):
{code}
10:11:11.328 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Caused by: java.lang.NullPointerException
10:11:11.328 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sbt.IO$.pathSplit(IO.scala:744)
10:11:11.328 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sbt.IO$.parseClasspath(IO.scala:859)
10:11:11.328 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sbt.compiler.CompilerArguments.extClasspath(CompilerArguments.scala:62)
10:11:11.328 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sbt.compiler.AggressiveCompile.withBootclasspath(AggressiveCompile.scala:50)
10:11:11.328 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sbt.compiler.AggressiveCompile.compile2(AggressiveCompile.scala:83)
10:11:11.328 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at sbt.compiler.AggressiveCompile.compile1(AggressiveCompile.scala:70)
10:11:11.328 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.typesafe.zinc.Compiler.compile(Compiler.scala:201)
10:11:11.328 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.typesafe.zinc.Compiler.compile(Compiler.scala:183)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.typesafe.zinc.Compiler.compile(Compiler.scala:174)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.typesafe.zinc.Compiler.compile(Compiler.scala:165)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.scala.ZincScalaCompiler$Compiler.execute(ZincScalaCompiler.java:81)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.scala.ZincScalaCompiler.execute(ZincScalaCompiler.java:52)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.scala.ZincScalaCompiler.execute(ZincScalaCompiler.java:38)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.daemon.AbstractDaemonCompiler$CompilerWorkerAdapter.execute(AbstractDaemonCompiler.java:73)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.daemon.AbstractDaemonCompiler$CompilerWorkerAdapter.execute(AbstractDaemonCompiler.java:64)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.workers.internal.WorkerDaemonServer.execute(WorkerDaemonServer.java:29)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.daemon.AbstractDaemonCompiler$CompilerDaemonServer.execute(AbstractDaemonCompiler.java:91)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
10:11:11.329 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
10:11:11.330 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.process.internal.worker.request.WorkerAction.run(WorkerAction.java:88)
10:11:11.330 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
10:11:11.330 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
10:11:11.330 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
10:11:11.330 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
10:11:11.330 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
10:11:11.330 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:147)
10:11:11.330 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:129)
10:11:11.330 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
10:11:11.330 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] ... 2 more
{code}
Relevant issues:
https://github.com/sbt/zinc/pull/279
https://github.com/sbt/sbt/pull/2951
> Support Java 9
> --------------
>
> Key: KAFKA-4501
> URL: https://issues.apache.org/jira/browse/KAFKA-4501
> Project: Kafka
> Issue Type: Improvement
> Reporter: Ismael Juma
> Fix For: 0.11.1.0
>
>
> Java 9 is scheduled to be released in July 2017. We should support it.
> The new module system enforces access control and things like `setAccessible` cannot, by default, be used to circumvent access control in other modules. There are command-line flags available to disable the behaviour on a module by module basis.
> Right now, Gradle fails with the latest Java 9 snapshot and Scala 2.12.1 is required if building with Java 9. So we are blocked until the Gradle issues are fixed.
> I set the "Fix version" to 0.10.2.0, but it's likely to happen for the release after that.
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