ConcurrentModificationException during test execution blocking performance testing

[jaffer...@gmail.com]

Hi All,

Any pointers or workarounds here will be appreciated.

What steps will reproduce the problem?
1.run the jmeter test.
2.Log viewer in jmeter gui shows below exception

What is the expected output? What do you see instead?

Expected output :
Test should continue with the next thread.

output seen :
012/11/21 18:53:43 INFO  - jmeter.threads.JMeterThread: Thread finished: Thread Group 1-7 
2012/11/21 18:53:43 INFO  - jmeter.engine.StandardJMeterEngine: Ending thread Thread Group 1-7 

2012/11/21 18:53:43 INFO  - jmeter.engine.StandardJMeterEngine: Notifying test listeners of end of test 
2012/11/21 18:53:43 INFO  - jmeter.services.FileServer: Close: C:\jaffer\performance-testing\test-files\advancedsearch1.txt 
2012/11/21 18:53:43 ERROR - jmeter.JMeter: Uncaught exception:  java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
	at java.util.HashMap$KeyIterator.next(Unknown Source)
	at kg.apc.jmeter.perfmon.PerfMonCollector.processConnectors(PerfMonCollector.java:230)
	at kg.apc.jmeter.perfmon.PerfMonCollector.run(PerfMonCollector.java:82)
	at java.lang.Thread.run(Unknown Source)

Not sure how to proceed further.

Work arounds tried :
1) restarting agent after agent freeze.
2) changed the windows user to administrator.
3) ensured that File C:\jaffer\performance-testing\test-files\advancedsearch1.txt  is not open by anyone before the test begins in jmeter client machine.
4) ensured no other java process in jmeter client machine before the test begins. 

Is there any errors in jmeter.log?
<yes.Exception as shown above.>

Please attach jour JMX test plan and any related data files, if possible.
<yes>

advancedsearch2.jmx  96.6 KB   Download

Nov 22, 2012

#1 jaf...@infoarmy.com

Tested with below environments and still facing the same issue.
1) jmeter ver 2.6 &  perfmon plugin ver 0.5.1
2) jmeter ver 2.8 &  perfmon plugin ver 0.5.5

Nov 22, 2012

#2 jaf...@infoarmy.com

Also the same test is running fine without adding perfmon metrics in jmx file.

Nov 23, 2012

#3 jafferso...@gmail.com

This issue has to be fixed for all below 3 scenarios.
1) Repeated Concurrent Users testing in a loop( eg: 5 users with 2 times in a loop ) 
2) Concurrent Users testing for a fixed time slot( eg: 100 users for 30 mins ) 
3) Repated Concurrent Users testing for a fixed time slot( eg: 50 users in a loop for 30 mins ) 

Jan 22 (2 days ago)

#4 jaf...@infoarmy.com

Hi All,

Is anyone taking a look in to this issue as it blocking my performance testing with perfmon plugin.Any help here will be appreciated.Thanks in advance.

Also could anyone let us know when is the next release planned and will it come up with all bug fixes for open bugs currently.

Please let us know so that I can plan my work accordingly.

Thanks & Regards
Jaffer

 

[Andrey Pohilko]

see http://code.google.com/p/jmeter-plugins/issues/detail?id=223

пятница, 25 января 2013 г., 7:02:37 UTC+4 пользователь jaffer...@gmail.com написал: