我不知道JSTACK为什么无法获取进程的线程转储，它返回错误信息：“java.lang.RuntimeException: Unable to deduce type of thread from address...”
我尝试了以下命令：
$ sudo bin/jstack 42846
$ sudo bin/jstack -F 42846
任何线索都会对我有所帮助。以下是我遇到的错误：
Attaching to process ID 42846, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 25.131-b11
Deadlock Detection:
java.lang.RuntimeException: Unable to deduce type of thread from address 0x00007fb1f430f000 (expected type JavaThread, CompilerThread, ServiceThread, JvmtiAgentThread, or SurrogateLockerThread)
at sun.jvm.hotspot.runtime.Threads.createJavaThreadWrapper(Threads.java:166)
at sun.jvm.hotspot.runtime.Threads.first(Threads.java:150)
at sun.jvm.hotspot.runtime.DeadlockDetector.createThreadTable(DeadlockDetector.java:149)
at sun.jvm.hotspot.runtime.DeadlockDetector.print(DeadlockDetector.java:56)
at sun.jvm.hotspot.runtime.DeadlockDetector.print(DeadlockDetector.java:39)
at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:62)
at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:45)
at sun.jvm.hotspot.tools.JStack.run(JStack.java:66)
at sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
at sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
at sun.jvm.hotspot.tools.JStack.main(JStack.java:92)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.tools.jstack.JStack.runJStackTool(JStack.java:140)
at sun.tools.jstack.JStack.main(JStack.java:106)
Caused by: sun.jvm.hotspot.types.WrongTypeException: No suitable match for type of address 0x00007fb1f430f000
at sun.jvm.hotspot.runtime.InstanceConstructor.newWrongTypeException(InstanceConstructor.java:62)
at sun.jvm.hotspot.runtime.VirtualConstructor.instantiateWrapperFor(VirtualConstructor.java:80)
at sun.jvm.hotspot.runtime.Threads.createJavaThreadWrapper(Threads.java:162)
... 17 more
Can't print deadlocks:Unable to deduce type of thread from address 0x00007fb1f430f000 (expected type JavaThread, CompilerThread, ServiceThread, JvmtiAgentThread, or SurrogateLockerThread)
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.tools.jstack.JStack.runJStackTool(JStack.java:140)
at sun.tools.jstack.JStack.main(JStack.java:106)
Caused by: java.lang.RuntimeException: Unable to deduce type of thread from address 0x00007fb1f430f000 (expected type JavaThread, CompilerThread, ServiceThread, JvmtiAgentThread, or SurrogateLockerThread)
at sun.jvm.hotspot.runtime.Threads.createJavaThreadWrapper(Threads.java:166)
at sun.jvm.hotspot.runtime.Threads.first(Threads.java:150)
at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:75)
at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:45)
at sun.jvm.hotspot.tools.JStack.run(JStack.java:66)
at sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
at sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
at sun.jvm.hotspot.tools.JStack.main(JStack.java:92)
... 6 more
Caused by: sun.jvm.hotspot.types.WrongTypeException: No suitable match for type of address 0x00007fb1f430f000
at sun.jvm.hotspot.runtime.InstanceConstructor.newWrongTypeException(InstanceConstructor.java:62)
at sun.jvm.hotspot.runtime.VirtualConstructor.instantiateWrapperFor(VirtualConstructor.java:80)
at sun.jvm.hotspot.runtime.Threads.createJavaThreadWrapper(Threads.java:162)
java -version，您不必提供完整的版本，这对我有效：debuginfo-install java-1.8.0-openjdk-1.8.0.144。之后，作为root用户，我可以获取jenkins用户Java进程的堆栈跟踪。 - gaoithe