Issue

• jmap fails to capture a heap dump from a 1.7.0_25 OpenJDK jvm with the following error:

$ /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.25.x86_64/bin/jmap -J-d64 -dump:format=b,file=heap.hprof -F 3069
Attaching to process ID 3069, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 23.7-b01
Dumping heap to heap.hprof ...
Exception in thread "main" java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at sun.tools.jmap.JMap.runTool(JMap.java:197)
    at sun.tools.jmap.JMap.main(JMap.java:128)
Caused by: sun.jvm.hotspot.utilities.AssertionFailure: Expecting GenCollectedHeap, G1CollectedHeap, or ParallelScavengeHeap, but got sun.jvm.hotspot.gc_interface.CollectedHeap
    at sun.jvm.hotspot.utilities.Assert.that(Assert.java:32)
    at sun.jvm.hotspot.oops.ObjectHeap.collectLiveRegions(ObjectHeap.java:605)
    at sun.jvm.hotspot.oops.ObjectHeap.iterate(ObjectHeap.java:244)
    at sun.jvm.hotspot.utilities.AbstractHeapGraphWriter.write(AbstractHeapGraphWriter.java:51)
    at sun.jvm.hotspot.utilities.HeapHprofBinWriter.write(HeapHprofBinWriter.java:416)
    at sun.jvm.hotspot.tools.HeapDumper.run(HeapDumper.java:56)
    at sun.jvm.hotspot.tools.Tool.start(Tool.java:221)
    at sun.jvm.hotspot.tools.HeapDumper.main(HeapDumper.java:77)
    ... 6 more

• Heap dump error on Openshift