Can't run any of the latest verions on a OpenJ9 JVM

Describe the bug

Trying to use the Elastic APM agent with an OpenJ9 JVM. However this is causing regular problems when we try to upgrade to a later version. The error that originally was fixed in elastic/apm-agent-java#1415 have come back. This means that it is impossible to use APM with OpenJ9 at this point in time.

Steps to reproduce

Attach the agent to a OpenJ9 JVM. Currently testing with this one: docker.artifactory.ccta.dk/ibm-semeru-runtimes:open-11-jre.

Here’s some of the very long stacktrace that clutters the log:

Caused by: java.lang.IllegalAccessException: Module 'java.base' no access to: package 'java.lang' because module 'java.base' can't read module 'unnamed module @78f2b2cb'
        at java.base/java.lang.invoke.MethodHandles$Lookup.throwIllegalAccessException(Unknown Source)
        at java.base/java.lang.invoke.MethodHandles$Lookup.checkClassModuleVisibility(Unknown Source)
        at java.base/java.lang.invoke.MethodHandles$Lookup.checkClassAccess(Unknown Source)
        at java.base/java.lang.invoke.MethodHandles$Lookup.checkAccess(Unknown Source)
        at java.base/java.lang.invoke.MethodHandles$Lookup.checkAccess(Unknown Source)
        at java.base/java.lang.invoke.MethodHandles$Lookup.findStatic(Unknown Source)
        ... 23 more
java.lang.IllegalAccessError: Module 'java.base' no access to: package 'java.lang' because module 'java.base' can't read module 'unnamed module @78f2b2cb'
        at java.base/java.lang.invoke.MethodHandleResolver.sendResolveMethodHandle(Unknown Source)
        at java.base/java.lang.invoke.MethodHandleResolver.getCPMethodHandleAt(Native Method)
        at java.base/java.lang.invoke.MethodHandleResolver.resolveInvokeDynamic(Unknown Source)
        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor.schedule(Unknown Source)
        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor.submit(Unknown Source)
java.lang.IllegalAccessError: Module 'java.base' no access to: package 'java.lang' because module 'java.base' can't read module 'unnamed module @78f2b2cb'
        at co.elastic.apm.agent.profiler.SamplingProfiler.start(SamplingProfiler.java:681)
        at co.elastic.apm.agent.profiler.ProfilingFactory.start(ProfilingFactory.java:39)
        at co.elastic.apm.agent.impl.ElasticApmTracer.startSync(ElasticApmTracer.java:579)
        at co.elastic.apm.agent.impl.ElasticApmTracer.start(ElasticApmTracer.java:542)
        at java.base/java.lang.invoke.MethodHandleResolver.sendResolveMethodHandle(Unknown Source)      at co.elastic.apm.agent.bci.ElasticApmAgent.initialize(ElasticApmAgent.java:147)

        at java.base/java.lang.invoke.MethodHandleResolver.getCPMethodHandleAt(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

Expected behavior

That the agent is sending APM data

[SylvainJuge]

Hi !

We just published the 1.28.2 release that includes this fix, you should now be able to replace the snapshot with an official release.

[SylvainJuge]

Thanks a lot @TueDissingWork and @xmarcusv for validating the fix. We are planning a bugfix release soon, make sure to subscribe to release notifications to know when it’s time to upgrade.