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List:       slide-dev
Subject:    DO NOT REPLY [Bug 51919] New: Random ConcurrentModificationException
From:       bugzilla () apache ! org
Date:       2011-09-29 20:33:43
Message-ID: bug-51919-55412 () https ! issues ! apache ! org/bugzilla/
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https://issues.apache.org/bugzilla/show_bug.cgi?id=51919

             Bug #: 51919
           Summary: Random ConcurrentModificationException or
                    NoSuchElementException in
                    CookieManager#removeMatchingCookies when using
                    Concurrent Download
           Product: JMeter
           Version: 2.5.1
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P2
         Component: HTTP
        AssignedTo: notifications@jakarta.apache.org
        ReportedBy: p.mouawad@ubik-ingenierie.com
    Classification: Unclassified


Created attachment 27636
  --> https://issues.apache.org/bugzilla/attachment.cgi?id=27636
Scenario that reproduces the issue

Hello,
Using options:
- HTTPCLient 3.1
- Retrieve All Embedded Resources from HTML
- Use Concurrent Pool to 5

I randomly get those 2 exceptions:
2011/09/29 22:31:16 WARN  - jmeter.protocol.http.sampler.HTTPSamplerBase:
Execution issue when fetching embedded resources
java.util.concurrent.ExecutionException:
java.util.ConcurrentModificationException
    at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
    at java.util.concurrent.FutureTask.get(FutureTask.java:83)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.downloadPageResources(HTTPSamplerBase.java:1213)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.resultProcessing(HTTPSamplerBase.java:1428)
    at
org.apache.jmeter.protocol.http.sampler.HTTPAbstractImpl.resultProcessing(HTTPAbstractImpl.java:244)
    at
org.apache.jmeter.protocol.http.sampler.HTTPHC3Impl.sample(HTTPHC3Impl.java:327)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:62)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1019)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1005)
    at
org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:411)
    at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:297)
    at java.lang.Thread.run(Thread.java:680)
Caused by: java.util.ConcurrentModificationException
    at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)
    at java.util.AbstractList$Itr.next(AbstractList.java:343)
    at
org.apache.jmeter.testelement.property.PropertyIteratorImpl.next(PropertyIteratorImpl.java:39)
    at
org.apache.jmeter.protocol.http.control.CookieManager.removeMatchingCookies(CookieManager.java:466)
    at
org.apache.jmeter.protocol.http.control.CookieManager.add(CookieManager.java:258)
    at
org.apache.jmeter.protocol.http.control.CookieManager.addCookieFromHeader(CookieManager.java:430)
    at
org.apache.jmeter.protocol.http.sampler.HTTPHC3Impl.saveConnectionCookies(HTTPHC3Impl.java:1071)
    at
org.apache.jmeter.protocol.http.sampler.HTTPHC3Impl.sample(HTTPHC3Impl.java:319)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:62)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase$ASyncSample.call(HTTPSamplerBase.java:1709)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase$ASyncSample.call(HTTPSamplerBase.java:1)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    ... 1 more

Or 2011/09/29 21:59:12 WARN  - jmeter.protocol.http.sampler.HTTPSamplerBase:
Execution issue when fetching embedded resources
java.util.concurrent.ExecutionException: java.util.NoSuchElementException
    at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
    at java.util.concurrent.FutureTask.get(FutureTask.java:83)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.downloadPageResources(HTTPSamplerBase.java:1213)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.resultProcessing(HTTPSamplerBase.java:1428)
    at
org.apache.jmeter.protocol.http.sampler.HTTPAbstractImpl.resultProcessing(HTTPAbstractImpl.java:244)
    at
org.apache.jmeter.protocol.http.sampler.HTTPHC3Impl.sample(HTTPHC3Impl.java:327)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:62)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1019)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1005)
    at
org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:411)
    at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:297)
    at java.lang.Thread.run(Thread.java:680)
Caused by: java.util.NoSuchElementException
    at java.util.AbstractList$Itr.next(AbstractList.java:350)
    at
org.apache.jmeter.testelement.property.PropertyIteratorImpl.next(PropertyIteratorImpl.java:39)
    at
org.apache.jmeter.protocol.http.control.CookieManager.removeMatchingCookies(CookieManager.java:466)
    at
org.apache.jmeter.protocol.http.control.CookieManager.add(CookieManager.java:258)
    at
org.apache.jmeter.protocol.http.control.CookieManager.addCookieFromHeader(CookieManager.java:430)
    at
org.apache.jmeter.protocol.http.sampler.HTTPHC3Impl.saveConnectionCookies(HTTPHC3Impl.java:1071)
    at
org.apache.jmeter.protocol.http.sampler.HTTPHC3Impl.sample(HTTPHC3Impl.java:319)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:62)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase$ASyncSample.call(HTTPSamplerBase.java:1709)
    at
org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase$ASyncSample.call(HTTPSamplerBase.java:1)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    ... 1 more


To reproduce issue set number of threads to > 20 you will have more chance to
get it.
Regards
Philippe Mouawad

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