Centos 64bit和openjdk 7上的堆转储错误

Question

我正在尝试使用open-jdk7 java在运行glassfish 3.1.2的计算机上生成堆转储.

我正在使用以下命令:

jmap -dump:live,format=b,file=dump.t -F 24935

但我一直收到这个错误:

Attaching to process ID 24935, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 23.7-b01
Dumping heap to dump.t ...
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:601)
        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

这是我的完整java版本:

[ufasoli]$ java -version
java version "1.7.0_19"
OpenJDK Runtime Environment (rhel-2.3.9.1.el6_4-x86_64)
OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)

确切的CentOS版本是:

CentOS release 6.3 (Final)

有任何想法吗？

Answer 1

发布这个,所以我不会忘记自己的解决方案:P

这有效:

$ sudo /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.51.x86_64/bin/jmap -dump:format=b,file=./testDump   8894
Dumping heap to /home/<snip>/testDump ...
Heap dump file created

这失败了:

$ sudo /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.51.x86_64/bin/jmap -heap:format=b     8894
Attaching to process ID 8894, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 24.45-b08
Dumping heap to heap.bin ...
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:604)
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

Answer 2

这可能是相关的,但在某些Java版本上,最近的RHEL/Centos(版本> = 6)似乎有点奇怪,因此jmap,jstack和朋友需要作为启动该过程的确切用户运行- 并且它如果以root身份运行将无法工作.

像这样的命令:

sudo -H -u <USERNAME WHO STARTED PROCESS> jmap -histo <PID>

应该照顾它,假设你有适当的sudo权限.