otel agent 2.1.0 failes to load with java 23

[shalom938]

when running an app with java 23 and otel agent 2.1.0 otel fails to load.
I know that otel agent 2.10.0 works with java 23 but it may take us some time to upgrade to 2.10.0.
my question is if there is a way to use 2.1.0 with java 23?
I tried to add
--add-opens java.base/java.lang=ALL-UNNAMED
the error is gone but no traces are exported.

the error is
[otel.javaagent 2024-11-15 10:30:50:427 +0100] [main] INFO io.opentelemetry.javaagent.tooling.VersionLogger - opentelemetry-javaagent - version: 2.1.0
OpenTelemetry Javaagent failed to start
java.lang.ExceptionInInitializerError
at io.opentelemetry.javaagent.tooling.muzzle.AgentTooling.(AgentTooling.java:23)
at io.opentelemetry.javaagent.tooling.AgentInstaller.installBytebuddyAgent(AgentInstaller.java:151)
at io.opentelemetry.javaagent.tooling.AgentInstaller.installBytebuddyAgent(AgentInstaller.java:103)
at io.opentelemetry.javaagent.tooling.AgentStarterImpl.start(AgentStarterImpl.java:99)
at io.opentelemetry.javaagent.bootstrap.AgentInitializer$1.run(AgentInitializer.java:53)
at io.opentelemetry.javaagent.bootstrap.AgentInitializer$1.run(AgentInitializer.java:47)
at io.opentelemetry.javaagent.bootstrap.AgentInitializer.execute(AgentInitializer.java:64)
at io.opentelemetry.javaagent.bootstrap.AgentInitializer.initialize(AgentInitializer.java:46)
at io.opentelemetry.javaagent.OpenTelemetryAgent.startAgent(OpenTelemetryAgent.java:57)
at io.opentelemetry.javaagent.OpenTelemetryAgent.premain(OpenTelemetryAgent.java:45)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:560)
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:572)
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.findLoadedClass(java.lang.String) accessible: module java.base does not "opens java.lang" to unnamed module @7c16905e
at java.base/java.lang.reflect.AccessibleObject.throwInaccessibleObjectException(AccessibleObject.java:388)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:364)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:312)
at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:203)
at java.base/java.lang.reflect.Method.setAccessible(Method.java:197)
at io.opentelemetry.javaagent.tooling.muzzle.AgentCachingPoolStrategy.getFindLoadedClassMethod(AgentCachingPoolStrategy.java:115)
at io.opentelemetry.javaagent.tooling.muzzle.AgentCachingPoolStrategy.(AgentCachingPoolStrategy.java:58)
... 14 more

[shalom938]

replying myself,
i understand it will not be possible because
java.lang.IllegalArgumentException: Java 23 (67) is not supported by the current version of Byte Buddy which officially supports Java 22 (66) - update Byte Buddy or set net.bytebuddy.experimental as a VM property
at net.bytebuddy.utility.OpenedClassReader.of(OpenedClassReader.java:100)