使用JMAP获取heapdump时出现exception
当我使用heapdump时，我得到以下exception
jmap -F -dump：format = b，file = / tmp / heapdump / before.hprof 10737
Attaching to process ID 10737, please wait... Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at sun.tools.jmap.JMap.runTool(JMap.java:179) at sun.tools.jmap.JMap.main(JMap.java:110) Caused by: java.lang.RuntimeException: Type "nmethodBucket*", referenced in VMStructs::localHotSpotVMStructs in the remote VM, was not present in the remote VMStructs::localHotSpotVMTypes table (should have been caught in the debug build of that VM). Can not continue. at sun.jvm.hotspot.HotSpotTypeDataBase.lookupOrFail(HotSpotTypeDataBase.java:361) at sun.jvm.hotspot.HotSpotTypeDataBase.readVMStructs(HotSpotTypeDataBase.java:252) at sun.jvm.hotspot.HotSpotTypeDataBase.(HotSpotTypeDataBase.java:87) at sun.jvm.hotspot.bugspot.BugSpotAgent.setupVM(BugSpotAgent.java:568) at sun.jvm.hotspot.bugspot.BugSpotAgent.go(BugSpotAgent.java:494) at sun.jvm.hotspot.bugspot.BugSpotAgent.attach(BugSpotAgent.java:332) at sun.jvm.hotspot.tools.Tool.start(Tool.java:163) at sun.jvm.hotspot.tools.HeapDumper.main(HeapDumper.java:77) 有谁知道如何解决这个问题？
我看到同样的错误，因为我的jmap路径与java进程的路径不同（即定位两个不同的版本）。
使用JDK的完整路径运行jmap解决了它。
如果使用OpenJDK，则需要安装debuginfo-packages。
在Centos中，这适用于 – sudo debuginfo-install java-1.8.0-openjdk – 或sudo yum install java-1.8.0-openjdk-debuginfo.x86_64
请参阅 – https://bugzilla.redhat.com/show_bug.cgi?id=1010786#c15 – amazon linux – 安装openjdk-debuginfo？