jmap崩溃,"无法获取类数据"

Question

有一个Java核心转储; 运行jmap:

/usr/java/jdk1.8.0_25/bin/jmap -dump:format=b,file=dump.hprof  /usr/bin/java core.31497 

给出以下例外:

Attaching to core core.31497 from executable /usr/bin/java, please wait...
...
JVM version is 25.25-b02
...
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:483)
    at sun.tools.jmap.JMap.runTool(JMap.java:201)
    at sun.tools.jmap.JMap.main(JMap.java:130)
Caused by: sun.jvm.hotspot.utilities.AssertionFailure: can not get class data for         sun/nio/ch/ThreadPool$$Lambda$10x00000007c0214428
    at sun.jvm.hotspot.utilities.Assert.that(Assert.java:32)
    at sun.jvm.hotspot.utilities.HeapHprofBinWriter.writeInstance(HeapHprofBinWriter.java:803)
    ...
    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.HeapDumper.main(HeapDumper.java:83)

有什么想法吗？

Answer 1

正如 @sethwm 提到的，这是一个已知的错误。

从 Java 8 Update 60 开始已修复该问题。