IncompatibleClassChangeError

Hi,

Does anyone have any pointers to debugging this issue?

Thanks.

On Thu, Jul 2, 2015 at 3:57 PM, Hrishikesh P <[email protected]>
wrote:

> I think that option would be applicable only when the debug property is
> set to true. I actually tried removing the debug property and I did not get
> the instrumentation issue (as also seen here
> <http://sourceforge.net/p/grinder/mailman/message/28767369/>), but now I
> am back to the IncompatibleClassChangeError.
>
> I had originally added the property to get more info on this error, but
> didn't get much info with it anyway.
>
> 2015-07-02 15:24:21,267 ERROR worker-bootstrap: Error running worker
> process
>
> java.lang.IncompatibleClassChangeError: Implementing class
>
> at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.6.0_65]
>
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
> ~[na:1.6.0_65]
>
> at java.lang.ClassLoader.defineClass(ClassLoader.java:621) ~[na:1.6.0_65]
>
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> ~[na:1.6.0_65]
>
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> ~[na:1.6.0_65]
>
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> ~[na:1.6.0_65]
>
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197) ~[na:1.6.0_65]
>
> at java.security.AccessController.doPrivileged(Native Method)
> ~[na:1.6.0_65]
>
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> ~[na:1.6.0_65]
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306) ~[na:1.6.0_65]
>
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> ~[na:1.6.0_65]
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ~[na:1.6.0_65]
>
> at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.6.0_65]
>
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
> ~[na:1.6.0_65]
>
> at java.lang.ClassLoader.defineClass(ClassLoader.java:621) ~[na:1.6.0_65]
>
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
> ~[na:1.6.0_65]
>
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
> ~[na:1.6.0_65]
>
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
> ~[na:1.6.0_65]
>
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197) ~[na:1.6.0_65]
>
> at java.security.AccessController.doPrivileged(Native Method)
> ~[na:1.6.0_65]
>
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> ~[na:1.6.0_65]
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306) ~[na:1.6.0_65]
>
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> ~[na:1.6.0_65]
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ~[na:1.6.0_65]
>
> at
> net.grinder.util.weave.j2se6.ASMTransformerFactory.create(ASMTransformerFactory.java:119)
> ~[grinder-core-3.11.jar:na]
>
> at net.grinder.util.weave.j2se6.DCRWeaver.<init>(DCRWeaver.java:70)
> ~[grinder-core-3.11.jar:na]
>
> at
> net.grinder.engine.process.dcr.DCRContextImplementation.<init>(DCRContextImplementation.java:112)
> ~[grinder-core-3.11.jar:na]
>
> at
> net.grinder.engine.process.dcr.DCRContextImplementation.create(DCRContextImplementation.java:89)
> ~[grinder-core-3.11.jar:na]
>
> at net.grinder.engine.process.GrinderProcess.run(GrinderProcess.java:361)
> ~[grinder-core-3.11.jar:na]
>
> at
> net.grinder.engine.process.WorkerProcessEntryPoint.run(WorkerProcessEntryPoint.java:86)
> [grinder-core-3.11.jar:na]
>
> at
> net.grinder.engine.process.WorkerProcessEntryPoint.main(WorkerProcessEntryPoint.java:59)
> [grinder-core-3.11.jar:na]
>
> Exception in thread "main" java.lang.IncompatibleClassChangeError:
> Implementing class
>
> at java.lang.ClassLoader.defineClass1(Native Method)
>
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
>
> at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
>
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
>
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
>
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
>
> at java.security.AccessController.doPrivileged(Native Method)
>
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>
> at java.lang.ClassLoader.defineClass1(Native Method)
>
> at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
>
> at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
>
> at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
>
> at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
>
> at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
>
> at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
>
> at java.security.AccessController.doPrivileged(Native Method)
>
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
>
> at
> net.grinder.util.weave.j2se6.ASMTransformerFactory.create(ASMTransformerFactory.java:119)
>
> at net.grinder.util.weave.j2se6.DCRWeaver.<init>(DCRWeaver.java:70)
>
> at
> net.grinder.engine.process.dcr.DCRContextImplementation.<init>(DCRContextImplementation.java:112)
>
> at
> net.grinder.engine.process.dcr.DCRContextImplementation.create(DCRContextImplementation.java:89)
>
> at net.grinder.engine.process.GrinderProcess.run(GrinderProcess.java:361)
>
> at
> net.grinder.engine.process.WorkerProcessEntryPoint.run(WorkerProcessEntryPoint.java:86)
>
> at
> net.grinder.engine.process.WorkerProcessEntryPoint.main(WorkerProcessEntryPoint.java:59)
>
> 2015-07-02 15:24:21,279 INFO  agent: finished, waiting for console signal
>
>
> Thanks.
>
> On Thu, Jul 2, 2015 at 3:33 PM, Curtis Rueden <[email protected]> wrote:
>
>> Hi Hrishi,
>>
>> Don't you have to pass the "-javaagent..." flag if you want
>> instrumentation to be possible?
>>
>> I found something about that in the Grinder docs:
>> http://grinder.sourceforge.net/g3/properties.html
>>
>> "If you want instrumentation to work, you must specify
>> -javaagent:path/grinder-dcr-agent-version.jar on the command line."
>>
>> In general, I am guessing that trying to launch stuff from the CLI using
>> "java" directly is a recipe for pain.
>>
>> But again: I know nothing about Grinder so could be off-base.
>>
>> Regards,
>> Curtis
>>
>> On Thu, Jul 2, 2015 at 3:20 PM, Hrishikesh P <[email protected]>
>> wrote:
>>
>>> Thanks, Curtis. I was actually able to resolve the class path issue
>>> using the maven dependency plugin. Now the error I'm running into is
>>> related to the instrumenter.
>>>
>>> I get a NotInstrumentableTypeException when trying to record a java
>>> method. The logs show that the 'Java VM does not support instrumentation',
>>> but according to the troubleshooting-instrumentation
>>> <http://grinder.sourceforge.net/g3/instrumentation.html#troubleshooting-instrumentation> the
>>> java version should be 1.6 which is what I'm using and also seen in the
>>> logs.
>>>
>>> INFO  MAC-USER-0 : The Grinder version 3.11
>>>
>>> INFO  MAC-USER-0 : Java(TM) SE Runtime Environment
>>> 1.6.0_65-b14-466.1-11M4716: Java HotSpot(TM) 64-Bit Server VM
>>> (20.65-b04-466.1, mixed mode) on Mac OS X x86_64 10.10.4
>>>
>>>
>>>
>>> INFO  MAC-USER-0 : Java VM does not support instrumentation, DCR
>>> unavailable
>>>
>>> INFO  MAC-USER-0 : worker process 0
>>>
>>> MAC-USER-0 : instrumentation agents: NO INSTRUMENTER COULD BE LOADED
>>>
>>> INFO  MAC-USER-0 : running "grinder.py" using Jython 2.5.3
>>> (2.5:c56500f08d34+, Aug 13 2012, 14:54:35)
>>>
>>> [Java HotSpot(TM) 64-Bit Server VM (Apple Inc.)]
>>>
>>>
>>>
>>> On Thu, Jul 2, 2015 at 2:21 PM, Curtis Rueden <[email protected]> wrote:
>>>
>>>> Hi Hrishi,
>>>>
>>>> > now I am having to specify each and every jar that my JUnit test class
>>>> > uses in the class path. Isn't there a simpler way that involves not
>>>> > having to search and specify all required jars?
>>>>
>>>> https://code.google.com/p/grinder-maven-plugin/ ?
>>>>
>>>> But I know literally nothing about Grinder. Just a shot in the dark!
>>>>
>>>> Regards,
>>>> Curtis
>>>>
>>>> On Thu, Jul 2, 2015 at 12:54 PM, Hrishikesh P <
>>>> [email protected]> wrote:
>>>>
>>>>> Never mind, I was specifying the test-sources jar instead of the tests
>>>>> jar. Once I corrected this, this error was gone.
>>>>>
>>>>> But, now I am having to specify each and every jar that my JUnit test
>>>>> class uses in the class path. Isn't there a simpler way that involves not
>>>>> having to search and specify all required jars?
>>>>>
>>>>>
>>>>> On Thu, Jul 2, 2015 at 11:45 AM, Hrishikesh P <
>>>>> [email protected]> wrote:
>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> I am running into a Jython module import issue while starting the
>>>>>> grinder agent. This is a JUnit test class that I'm trying to import.
>>>>>>
>>>>>> The command that I'm invoking is:
>>>>>>
>>>>>>
>>>>>> java -cp
>>>>>> ~/grinder-3.11/lib/grinder.jar:~/test/target/myapp-1.0.0-SNAPSHOT-test-sources.jar
>>>>>> net.grinder.Grinder
>>>>>>
>>>>>>
>>>>>>
>>>>>> and this is my complete output:
>>>>>>
>>>>>>
>>>>>>
>>>>>> 2015-07-01 10:55:14,948 INFO  agent: The Grinder 3.11
>>>>>>
>>>>>> 2015-07-01 10:55:14,967 WARN  agent: Failed to connect to 'localhost/
>>>>>> 127.0.0.1:6372', proceeding without the console; set
>>>>>> grinder.useConsole=false to disable this warning.
>>>>>>
>>>>>> 2015-07-01 10:55:14,974 INFO  agent: Worker process command line:
>>>>>> java '-javaagent:/Users/user/grinder-3.11/lib/grinder-dcr-agent-3.11.jar'
>>>>>> -classpath
>>>>>> '/Users/user/grinder-3.11/lib/grinder.jar:/Users/user/test/target/myapp-1.0.0-SNAPSHOT-test-sources.jar'
>>>>>> net.grinder.engine.process.WorkerProcessEntryPoint
>>>>>>
>>>>>> 2015-07-01 10:55:15,045 INFO  agent: worker MAC-USER-0 started
>>>>>>
>>>>>> ['.', '.', '/Users/user/grinder-3.11/lib/Lib',
>>>>>> '/Users/user/grinder-3.11/lib/jython-standalone-2.5.3.jar/Lib',
>>>>>> '__classpath__', '__pyclasspath__/',
>>>>>> '/Users/user/test/target/myapp-1.0.0-SNAPSHOT-test-sources.jar']
>>>>>>
>>>>>> 2015-07-01 10:55:16,774 ERROR MAC-USER-0: aborting process - Jython
>>>>>> exception, <type 'exceptions.ImportError'>: No module named mytest
>>>>>> [initialising test script]
>>>>>>
>>>>>> net.grinder.scriptengine.jython.JythonScriptExecutionException: <type
>>>>>> 'exceptions.ImportError'>: No module named mytest
>>>>>>
>>>>>> from mytest import BaseTest
>>>>>>
>>>>>> File "./grinder.py", line 9, in <module>
>>>>>>
>>>>>> 2015-07-01 10:55:16,787 INFO  agent: finished
>>>>>>
>>>>>>
>>>>>>
>>>>>> Any pointers will be appreciated.
>>>>>>
>>>>>>
>>>>>> I'm new to Grinder and have little to no experience with Jython (but
>>>>>> a bit more experienced in Python).
>>>>>>
>>>>>>
>>>>>> Thanks much in advance!
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------------------
>>>>> Don't Limit Your Business. Reach for the Cloud.
>>>>> GigeNET's Cloud Solutions provide you with the tools and support that
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>>>>>
>>>>> _______________________________________________
>>>>> Jython-users mailing list
>>>>> [email protected]
>>>>> https://lists.sourceforge.net/lists/listinfo/jython-users
>>>>>
>>>>>
>>>>
>>>
>>
>

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