我对JSTACK无法获得进程的线程转储很无能为力.它是重新调整错误"java.lang.RuntimeException:无法从地址中推断出线程的类型......"
我试过下面的命令:
$ 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)
实际上，当我以进程所有者身份运行 jstack 命令时，它起作用了。我以 root 用户身份运行 jstack，我尝试进行线程转储的进程是一个 Cassandra DB 进程。该进程的所有者是“cassandra”用户，当我从“cassandra”用户运行“jstack”命令时，一切正常。
但是 jstack 错误输出应该能够表明这个问题，不幸的是它喷出了一些不同的东西。