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Agent Version 3.7.9 Yields java.lang.ClassCircularityError #4817
Description
Expected behavior
Application starts successfully.
Actual behavior
Application start fails with exception:
ERROR io.opentelemetry.javaagent.OpenTelemetryAgent
java.lang.ClassCircularityError: java/lang/invoke/MethodHandle$1
at java.base/java.lang.invoke.MethodHandle.customize(MethodHandle.java:1741)
at java.base/java.lang.invoke.MethodHandle.maybeCustomize(MethodHandle.java:1731)
at java.base/java.lang.invoke.Invokers.maybeCustomize(Invokers.java:634)
at java.base/java.lang.invoke.Invokers.checkCustomized(Invokers.java:628)
at java.base/java.lang.invoke.BootstrapMethodInvoker.invoke(BootstrapMethodInvoker.java:134)
at java.base/java.lang.invoke.CallSite.makeSite(CallSite.java:315)
at java.base/java.lang.invoke.MethodHandleNatives.linkCallSiteImpl(MethodHandleNatives.java:281)
at java.base/java.lang.invoke.MethodHandleNatives.linkCallSite(MethodHandleNatives.java:271)
at com.microsoft.applicationinsights.agent.internal.init.FirstEntryPoint.onStartupFailure(FirstEntryPoint.java:248)
at io.opentelemetry.javaagent.tooling.AgentStarterImpl.start(AgentStarterImpl.java:118)
at io.opentelemetry.javaagent.bootstrap.AgentInitializer$2.run(AgentInitializer.java:68)
at io.opentelemetry.javaagent.bootstrap.AgentInitializer$2.run(AgentInitializer.java:61)
at io.opentelemetry.javaagent.bootstrap.AgentInitializer.execute(AgentInitializer.java:84)
at io.opentelemetry.javaagent.bootstrap.AgentInitializer.initialize(AgentInitializer.java:60)
at io.opentelemetry.javaagent.OpenTelemetryAgent.startAgent(OpenTelemetryAgent.java:59)
at io.opentelemetry.javaagent.OpenTelemetryAgent.premain(OpenTelemetryAgent.java:46)
at com.microsoft.applicationinsights.agent.Agent.premain(Agent.java:38)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:569)
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:491)
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:503)
Exception in thread "main" java.lang.ClassCircularityError: java/lang/invoke/MethodHandle$1
at java.base/java.lang.invoke.MethodHandle.customize(MethodHandle.java:1741)
at java.base/java.lang.invoke.MethodHandle.maybeCustomize(MethodHandle.java:1731)
at java.base/java.lang.invoke.Invokers.maybeCustomize(Invokers.java:634)
at java.base/java.lang.invoke.Invokers.checkCustomized(Invokers.java:628)
at java.base/java.lang.invoke.BootstrapMethodInvoker.invoke(BootstrapMethodInvoker.java:134)
at java.base/java.lang.invoke.CallSite.makeSite(CallSite.java:315)
at java.base/java.lang.invoke.MethodHandleNatives.linkCallSiteImpl(MethodHandleNatives.java:281)
at java.base/java.lang.invoke.MethodHandleNatives.linkCallSite(MethodHandleNatives.java:271)
at java.base/java.util.ResourceBundle$ResourceBundleControlProviderHolder.<clinit>(ResourceBundle.java:1518)
at java.base/java.util.ResourceBundle.getDefaultControl(ResourceBundle.java:1514)
at java.base/java.util.ResourceBundle.getDefaultControl(ResourceBundle.java:1508)
at java.base/java.util.ResourceBundle.getBundle(ResourceBundle.java:859)
at org.tanukisoftware.wrapper.resources.ResourceManager.refreshBundle(ResourceManager.java:124)
at org.tanukisoftware.wrapper.resources.ResourceManager.<init>(ResourceManager.java:117)
at org.tanukisoftware.wrapper.resources.ResourceManager.getResourceManager(ResourceManager.java:160)
at org.tanukisoftware.wrapper.resources.ResourceManager.getResourceManager(ResourceManager.java:141)
at org.tanukisoftware.wrapper.WrapperManager.<clinit>(WrapperManager.java:296)
at org.apache.karaf.wrapper.internal.service.Main.main(Main.java:143)
JVM exited while loading the application.
To Reproduce
Start Apache Karaf with AppInsights agent version 3.7.9 (-javaagent:/<path_to_agent>/applicationinsights-agent-3.7.9.jar). This agent version yields the above stacktrace. With everything else unchanged, reverting the agent version back to 3.7.5 enables the application to start. I have not tried the in-between versions.
System information
Please provide the following information:
- SDK Version: Java 17, AppInsights agent 3.7.9
- OS type and version: Centos 7
- Application Server type and version (if applicable): Apache Karaf 4.4.7
- Using spring-boot? No
- Additional relevant libraries (with version, if applicable): Java Service Wrapper (Tanuki Software)
Activity
xiang17 commentedon Sep 2, 2026
The fix is released in 2.31.0 of auto instrumentation and included in #4821.
xiang17 commentedon Oct 2, 2026
Verified the fix in new version 3.7.10 of Java Agent.