Brian Vella created CURATOR-509:
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Summary: 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
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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