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https://issues.apache.org/jira/browse/CURATOR-509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16781676#comment-16781676
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Jordan Zimmerman commented on CURATOR-509:
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So is the fix to build with the latest Java 8 JDK?
> Incompatible with Java 11
> -------------------------
>
> Key: CURATOR-509
> URL: https://issues.apache.org/jira/browse/CURATOR-509
> Project: Apache Curator
> Issue Type: Bug
> Components: Apache
> Affects Versions: 4.1.0
> Environment: java 11.0.2 on windows and linux
> Reporter: Brian Vella
> Priority: Major
>
> In java 11, this exception is thrown:
> {quote}java.lang.IncompatibleClassChangeError: Inconsistent constant pool
> data in classfile for class org/apache/curator/framework/CuratorFramework.
> Method lambda$postSafeNotify$0(Ljava/lang/Object;)V at index 99 is
> CONSTANT_MethodRef and should be CONSTANT_InterfaceMethodRef
> at
> org.apache.curator.framework.CuratorFramework.postSafeNotify(CuratorFramework.java:344)
> at
> org.apache.curator.framework.recipes.locks.InterProcessSemaphoreV2$1.process(InterProcessSemaphoreV2.java:90)
> at
> org.apache.curator.framework.imps.NamespaceWatcher.process(NamespaceWatcher.java:77)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:533)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:508)
> {quote}
> As I understood it, this is because there is a lambda in a default interface
> method and earlier versions of java 8 incorrectly compiled the method
> reference as a Method instead of an Interface method. Compiling with the
> latest java 8 compiler (8.0.172) seems to correctly compile the classin a way
> that works in java 8 and 11 (did not verify 9 and 10 but I suspect they
> behave like 11)
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