For info:
https://issues.apache.org/jira/browse/LOG4J2-1990
On Wednesday, July 26, 2017, Philippe Mouawad <philippe.moua...@gmail.com>
wrote:
> Hi Felix,
> I'll leave work on 61321 for tonight. If you want to investigate , go
> ahead.
>
> Thanks
>
> On Wed, Jul 26, 2017 at 9:47 PM, Felix Schumacher <felix.schumacher@
> internetallee.de
> <javascript:_e(%7B%7D,'cvml','felix.schumac...@internetallee.de');>>
> wrote:
>
>> Am 26.07.2017 um 21:40 schrieb Philippe Mouawad:
>>
>>> Hello,
>>> Working on 61321 I face what seems to be a bug in log4j2:
>>>
>> If the debug line is
>>
>> log.debug("Cache: {}", getCache())
>>
>> then I think the problem could be, that the cache gets modified, while
>> log4j is trying to print it and thus might throw a modification exception.
>>
>> This log message is a small leftover from my tries and a) should be
>> guarded by a log.isDebugEnabled() call and b) should probably be removed.
>>
>> Felix
>>
>>
>> 2017-07-26 21:37:39,417 WARN o.a.j.p.h.s.HTTPSamplerBase: Execution issue
>>> when fetching embedded resources
>>> java.util.concurrent.ExecutionException:
>>> java.util.ConcurrentModificationException
>>> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
>>> ~[?:1.8.0_121]
>>> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
>>> ~[?:1.8.0_121]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.down
>>> loadPageResources(HTTPSamplerBase.java:1349)
>>> [ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.resu
>>> ltProcessing(HTTPSamplerBase.java:1657)
>>> [ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPAbstractImpl.res
>>> ultProcessing(HTTPAbstractImpl.java:519)
>>> [ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(H
>>> TTPHC4Impl.java:534)
>>> [ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sam
>>> ple(HTTPSamplerProxy.java:74)
>>> [ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.samp
>>> le(HTTPSamplerBase.java:1189)
>>> [ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.samp
>>> le(HTTPSamplerBase.java:1178)
>>> [ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.threads.JMeterThread.executeSamplePackage(
>>> JMeterThread.java:500)
>>> [ApacheJMeter_core.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.threads.JMeterThread.processSampler(JMeter
>>> Thread.java:425)
>>> [ApacheJMeter_core.jar:3.3-SNAPSHOT.20170724]
>>> at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java
>>> :254)
>>> [ApacheJMeter_core.jar:3.3-SNAPSHOT.20170724]
>>> at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
>>> Caused by: java.util.ConcurrentModificationException
>>> at
>>> org.apache.commons.collections.map.AbstractLinkedMap$LinkIte
>>> rator.nextEntry(AbstractLinkedMap.java:560)
>>> ~[commons-collections-3.2.2.jar:3.2.2]
>>> at
>>> org.apache.commons.collections.map.AbstractLinkedMap$EntrySe
>>> tIterator.next(AbstractLinkedMap.java:428)
>>> ~[commons-collections-3.2.2.jar:3.2.2]
>>> at
>>> org.apache.logging.log4j.message.ParameterFormatter.appendMa
>>> p(ParameterFormatter.java:569)
>>> ~[log4j-api-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.message.ParameterFormatter.appendPo
>>> tentiallyRecursiveValue(ParameterFormatter.java:505)
>>> ~[log4j-api-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.message.ParameterFormatter.recursiv
>>> eDeepToString(ParameterFormatter.java:432)
>>> ~[log4j-api-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.message.ParameterFormatter.formatMe
>>> ssage2(ParameterFormatter.java:189)
>>> ~[log4j-api-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.message.ReusableParameterizedMessag
>>> e.formatTo(ReusableParameterizedMessage.java:313)
>>> ~[log4j-api-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.core.impl.MutableLogEvent.setMessag
>>> e(MutableLogEvent.java:214)
>>> ~[log4j-core-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.core.impl.ReusableLogEventFactory.c
>>> reateEvent(ReusableLogEventFactory.java:81)
>>> ~[log4j-core-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.core.config.LoggerConfig.log(Logger
>>> Config.java:401)
>>> [log4j-core-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.core.config.AwaitCompletionReliabil
>>> ityStrategy.log(AwaitCompletionReliabilityStrategy.java:63)
>>> [log4j-core-2.8.2.jar:2.8.2]
>>> at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:146)
>>> [log4j-core-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely
>>> (AbstractLogger.java:2091)
>>> [log4j-api-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.spi.AbstractLogger.logMessage(Abstr
>>> actLogger.java:2005)
>>> [log4j-api-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(Abs
>>> tractLogger.java:1876)
>>> [log4j-api-2.8.2.jar:2.8.2]
>>> at org.apache.logging.slf4j.Log4jLogger.debug(Log4jLogger.java:124)
>>> [log4j-slf4j-impl-2.8.2.jar:2.8.2]
>>> at
>>> org.apache.jmeter.protocol.http.control.CacheManager.getEntr
>>> y(CacheManager.java:501)
>>> ~[ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.control.CacheManager.inCache
>>> (CacheManager.java:431)
>>> ~[ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(H
>>> TTPHC4Impl.java:443)
>>> ~[ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sam
>>> ple(HTTPSamplerProxy.java:74)
>>> ~[ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase$ASyn
>>> cSample.call(HTTPSamplerBase.java:2031)
>>> ~[ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at
>>> org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase$ASyn
>>> cSample.call(HTTPSamplerBase.java:1)
>>> ~[ApacheJMeter_http.jar:3.3-SNAPSHOT.20170724]
>>> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>>> ~[?:1.8.0_121]
>>> at
>>> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>>> ~[?:1.8.0_121]
>>> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>>> ~[?:1.8.0_121]
>>> at
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPool
>>> Executor.java:1142)
>>> ~[?:1.8.0_121]
>>> at
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoo
>>> lExecutor.java:617)
>>> ~[?:1.8.0_121]
>>> ... 1 more
>>>
>>>
>>>
>>>
>>
>
>
> --
> Cordialement.
> Philippe Mouawad.
>
>
>
--
Cordialement.
Philippe Mouawad.
