0000411: JDK 1.5 monitoring tools get ClassFormatError

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Category

Severity

Reproducibility

Date Submitted

Last Update

0000411

[Resin]

minor

always

10-03-05 00:00

03-09-06 13:29

Reporter

sergek

View Status

public

Assigned To

ferg

Priority

normal

Resolution

fixed

Status

closed

Product Version

3.0.14

Summary

0000411: JDK 1.5 monitoring tools get ClassFormatError

Description

RSN-457
The JDK 1.5/5.0 bundles various monitoring tools that used to be under the jvmstat program, e.g., jps, jstack, jconsole, jinfo, etc...

Many of these tools will not work or have limited use against a Resin instance and will spit out the following error...

[root@server] jps
25083 Jps
21746 Resin
[root@server] jinfo 21746
Attaching to process ID 21746, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 1.5.0_04-b05
Java System Properties:

Exception in thread "main" java.lang.ClassFormatError: Invalid method attribute
name index 0 in class file com/caucho/loader/EnvironmentProperties
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:465)
        at sun.jvm.hotspot.utilities.ProcImageClassLoader.findClass(ProcImageClassLoader.java:35)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:242)
        at sun.jvm.hotspot.utilities.ObjectReader.readClass(ObjectReader.java:461)
        at sun.jvm.hotspot.utilities.ObjectReader.readInstance(ObjectReader.java:125)
        at sun.jvm.hotspot.utilities.ObjectReader.readObject(ObjectReader.java:73)
        at sun.jvm.hotspot.runtime.VM$2.doOop(VM.java:680)
        at sun.jvm.hotspot.oops.InstanceKlass.visitField(InstanceKlass.java:707)
        at sun.jvm.hotspot.oops.InstanceKlass.iterateFields(InstanceKlass.java:435)
        at sun.jvm.hotspot.oops.Oop.iterate(Oop.java:112)
        at sun.jvm.hotspot.runtime.VM.readSystemProperties(VM.java:675)
        at sun.jvm.hotspot.runtime.VM.getSystemProperties(VM.java:668)
        at sun.jvm.hotspot.tools.SysPropsDumper.run(SysPropsDumper.java:18)
        at sun.jvm.hotspot.tools.JInfo$1.run(JInfo.java:52)
        at sun.jvm.hotspot.tools.JInfo.run(JInfo.java:67)
        at sun.jvm.hotspot.tools.Tool.start(Tool.java:204)
        at sun.jvm.hotspot.tools.JInfo.main(JInfo.java:111)

Obviously this might be a bug in these tools, but it seems that something special is being done to that one Resin class, and perhaps if that could be worked around, it would be easier to use some free JDK-bundled tools on Resin.

Additional Information

JDK 1.5.0_04 Linux i386 RHEL3

Attached Files

Relationships

Notes
(0000926) ferg 03-09-06 13:29	See 0000151. The new environment-system-properties in 3.0.19 can be disabled to allow jinfo to work.

Issue History
Date Modified	Username	Field	Change
10-03-05 00:00	sergek	New Issue
03-09-06 13:29	ferg	Note Added: 0000926
03-09-06 13:29	ferg	Assigned To	=> ferg
03-09-06 13:29	ferg	Status	acknowledged => closed
03-09-06 13:29	ferg	Resolution	open => fixed
03-09-06 13:29	ferg	Fixed in Version	=> 3.0.19

Mantis 1.0.0rc3[^]

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