pinpoint 3.0.0, java version issue

[huijikim00]

I'm using Pinpoint 3.0.0.
Currently, I'm using Java version 21.
While using Pinpoint, the following log occurs only with Java 21 version, and the pinpoint agent does not run normally.
I understand that from Pinpoint version 3.0.0, Java 21 version can be used,
but can I get some information about this log?

---

• Pinpoint Agent load failure

---

[huijikim00]

It seems unrelated to the Java version.
Let me ask differently.
Looking at a log like "Caused by: java.lang.NoClassDefFoundError: com/lmax/disruptor/EventTranslatorVararg", it appears that an error is occurring due to a missing class/library.
Does the Pinpoint agent need to possess all the classes/libraries of the service being monitored?

[emeroad]

Caused by: java.lang.NoClassDefFoundError: com/lmax/disruptor/EventTranslatorVararg
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(Unknown Source)
	at java.base/java.security.SecureClassLoader.defineClass(Unknown Source)
	at java.base/java.net.URLClassLoader.defineClass(Unknown Source)
	at java.base/java.net.URLClassLoader$1.run(Unknown Source)
	at java.base/java.net.URLClassLoader$1.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at java.base/java.net.URLClassLoader.findClass(Unknown Source)
	at com.navercorp.pinpoint.bootstrap.java9.classloader.Java9ClassLoader.loadClass(Java9ClassLoader.java:111)
	at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
	at pinpoint.agent/pinpoint.agent/org.apache.logging.log4j.core.async.AsyncLoggerContextSelector.createContext(AsyncLoggerContextSelector.java:46).
         //  AsyncLoggerContextSelector  <--- AsyncLogger ??

It looks like you have set up async logging in log4j-agent.xml.
I recommend removing the async config.