Jmap -heap on all OpenJDK 1.7.79+ on Linux x86_64 crash

[Andrew Hughes]

----- Original Message -----
> > I ran across this bug report
> > (https://bugs.launchpad.net/ubuntu/+source/openjdk-7/+bug/1548434) and it
> > seems in Wheezy/Jessie it's likewise. The last functional version I just
> > so happened to hold onto is 7u79-2.5.5-1~deb7u1.
> >
> >  The following are confirmed to throw an Exception
> >   * 7u111-2.6.7-2~deb8
> >   * 7u121-2.6.8-1~deb7u1
> >   * 7u95-2.6.4-1~deb7u1
> >
> > Here is an example run with 7u121 -  http://pastebin.com/tzRk7xTH
> 
> I can confirm that on RHEL family distributions it occurs as well even with
> 131 which came out a couple weeks ago. Additionally it would be tremendously
> helpful if 'jmap' were moved back into the main package and not relegated to
> -devel. It is a tremendously useful program for day to day operations.
> 
> Linux ip-172-17-0-41 4.4.44-39.55.amzn1.x86_64 #1 SMP Mon Jan 30 18:15:53 UTC
> 2017 x86_64 x86_64 x86_64 GNU/Linux
> java-1.7.0-openjdk-1.7.0.131-2.6.9.0.71.amzn1.x86_64
> java-1.7.0-openjdk-devel-1.7.0.131-2.6.9.0.71.amzn1.x86_64
> 
> 
> # jmap -heap 2436
> Attaching to process ID 2436, please wait...
> Debugger attached successfully.
> Server compiler detected.
> JVM version is 24.131-b00
> 
> using thread-local object allocation.
> Garbage-First (G1) GC with 2 thread(s)
> 
> Heap Configuration:
>    MinHeapFreeRatio = 25
>    MaxHeapFreeRatio = 70
>    MaxHeapSize      = 2684354560 (2560.0MB)
>    NewSize          = 1363144 (1.2999954223632812MB)
>    MaxNewSize       = 17592186044415 MB
>    OldSize          = 5452592 (5.1999969482421875MB)
>    NewRatio         = 2
>    SurvivorRatio    = 5
>    PermSize         = 402653184 (384.0MB)
>    MaxPermSize      = 536870912 (512.0MB)
>    G1HeapRegionSize = 1048576 (1.0MB)
> 
> Heap Usage:
> 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: java.lang.RuntimeException: unknown CollectedHeap type : class
> sun.jvm.hotspot.gc_interface.CollectedHeap
>         at sun.jvm.hotspot.tools.HeapSummary.run(HeapSummary.java:146)
>         at sun.jvm.hotspot.tools.Tool.start(Tool.java:221)
>         at sun.jvm.hotspot.tools.HeapSummary.main(HeapSummary.java:40)
>         ... 6 more
> 
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Try installing java-1.7.0-openjdk-debuginfo.
-- 
Andrew :)

Senior Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

Web Site: http://fuseyism.com
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