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From Fady Haikal <fadyhai...@gmail.com>
Subject Re: Fwd: Failed to stop component [StandardEngine[Catalina].StandardHost[localhost]
Date Thu, 29 Dec 2016 09:56:45 GMT
Dear Mark,
is this bug is fixed in any version?

Regards,
Fady

On Thu, Dec 22, 2016 at 10:22 PM, Mark Thomas <markt@apache.org> wrote:
> On 22/12/2016 15:46, Fady Haikal wrote:
>> We can see the below error on the log file please advise:
>
> You are using multiple start/start threads and the RMI reference
> cleaning isn't thread safe. Arguably that is a bug in Tomcat but if you
> fix the RMI memory leaks in your application you won't hit the Tomcat bug.
>
> Mark
>
>
>>
>> OS: windows
>> Tomcat Version: 8.0.30
>> Cluster Tomcat
>>
>> 30-Nov-2016 08:32:21.197 SEVERE [Catalina-startStop-2]
>> org.apache.catalina.core.ContainerBase.stopInternal A child container
>> failed during stop
>>
>> java.util.concurrent.ExecutionException:
>> org.apache.catalina.LifecycleException: Failed to stop component
>> [StandardEngine[Catalina].StandardHost[localhost].StandardContext[]]
>>
>>                 at java.util.concurrent.FutureTask.report(Unknown Source)
>>
>>                 at java.util.concurrent.FutureTask.get(Unknown Source)
>>
>>                 at
>> org.apache.catalina.core.ContainerBase.stopInternal(ContainerBase.java:972)
>>
>>                 at
>> org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
>>
>>                 at
>> org.apache.catalina.core.ContainerBase$StopChild.call(
>> ContainerBase.java:1424)
>>
>>                 at
>> org.apache.catalina.core.ContainerBase$StopChild.call(
>> ContainerBase.java:1413)
>>
>>                 at java.util.concurrent.FutureTask.run(Unknown Source)
>>
>>                 at
>> java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
>>
>>                 at
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
>>
>>                 at java.lang.Thread.run(Unknown Source)
>>
>> Caused by: org.apache.catalina.LifecycleException: Failed to stop
>> component [StandardEngine[Catalina].StandardHost[localhost].
>> StandardContext[]]
>>
>>                 at
>> org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:236)
>>
>>                 ... 6 more
>>
>> Caused by: org.apache.catalina.LifecycleException: Failed to stop
>> component [WebappLoader[]]
>>
>>                 at
>> org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:236)
>>
>>                 at
>> org.apache.catalina.core.StandardContext.stopInternal(
>> StandardContext.java:5517)
>>
>>                 at
>> org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
>>
>>                 ... 6 more
>>
>> Caused by: java.util.ConcurrentModificationException
>>
>>                 at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
>>
>>                 at java.util.HashMap$ValueIterator.next(Unknown Source)
>>
>>                 at
>> org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesRmiTargets(
>> WebappClassLoaderBase.java:2275)
>>
>>                 at
>> org.apache.catalina.loader.WebappClassLoaderBase.clearReferences(
>> WebappClassLoaderBase.java:1578)
>>
>>                 at
>> org.apache.catalina.loader.WebappClassLoaderBase.stop(
>> WebappClassLoaderBase.java:1521)
>>
>>                 at
>> org.apache.catalina.loader.WebappLoader.stopInternal(WebappLoader.java:447)
>>
>>                 at
>> org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
>>
>>                 ... 8 more
>>
>>
>>
>>
>> 30-Nov-2016 08:32:21.354 SEVERE [Catalina-startStop-2]
>> org.apache.catalina.core.ContainerBase.stopInternal A child container
>> failed during stop
>>  java.util.concurrent.ExecutionException:
>> org.apache.catalina.LifecycleException: Failed to stop component
>> [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/docs]]
>> at java.util.concurrent.FutureTask.report(Unknown Source)
>> at java.util.concurrent.FutureTask.get(Unknown Source)
>> at org.apache.catalina.core.ContainerBase.stopInternal(
>> ContainerBase.java:972)
>> at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
>> at org.apache.catalina.core.ContainerBase$StopChild.call(
>> ContainerBase.java:1424)
>> at org.apache.catalina.core.ContainerBase$StopChild.call(
>> ContainerBase.java:1413)
>> at java.util.concurrent.FutureTask.run(Unknown Source)
>> at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
>> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
>> at java.lang.Thread.run(Unknown Source)
>> Caused by: org.apache.catalina.LifecycleException: Failed to stop
>> component [StandardEngine[Catalina].StandardHost[localhost].
>> StandardContext[/docs]]
>> at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:236)
>> ... 6 more
>> Caused by: org.apache.catalina.LifecycleException: Failed to stop
>> component [WebappLoader[/docs]]
>> at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:236)
>> at org.apache.catalina.core.StandardContext.stopInternal(
>> StandardContext.java:5517)
>> at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
>> ... 6 more
>> Caused by: java.util.ConcurrentModificationException
>> at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
>> at java.util.HashMap$ValueIterator.next(Unknown Source)
>> at org.apache.catalina.loader.WebappClassLoaderBase.
>> clearReferencesRmiTargets(WebappClassLoaderBase.java:2275)
>> at org.apache.catalina.loader.WebappClassLoaderBase.clearReferences(
>> WebappClassLoaderBase.java:1578)
>> at org.apache.catalina.loader.WebappClassLoaderBase.stop(
>> WebappClassLoaderBase.java:1521)
>> at org.apache.catalina.loader.WebappLoader.stopInternal(
>> WebappLoader.java:447)
>> at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:232)
>> ... 8 more
>>
>>
>> Regards,
>> Fady
>>
>
>
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