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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: Fw: No movement at Debug mode
Date Tue, 23 Jan 2018 15:58:06 GMT
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Karen,

On 1/21/18 10:49 AM, Karen Goh wrote:
> I want to add in additional infor :
> 
> After I stopped the server, the console has the following error
> message which beats me.
> 
> WARNING: The web application [Hi5S] appears to have started a
> thread named [Abandoned connection cleanup thread] but has failed
> to stop it. This is very likely to create a memory leak. Stack
> trace of thread: java.io.WinNTFileSystem.canonicalize0(Native
> Method) 
> java.io.WinNTFileSystem.canonicalize(WinNTFileSystem.java:428) 
> java.io.File.getCanonicalPath(File.java:618) 
> org.apache.catalina.webresources.AbstractFileResourceSet.file(Abstract
FileResourceSet.java:90)
>
> 
org.apache.catalina.webresources.DirResourceSet.getResource(DirResourceS
et.java:101)
> org.apache.catalina.webresources.StandardRoot.getResourceInternal(Stan
dardRoot.java:281)
>
> 
org.apache.catalina.webresources.CachedResource.validateResource(CachedR
esource.java:97)
> org.apache.catalina.webresources.Cache.getResource(Cache.java:69) 
> org.apache.catalina.webresources.StandardRoot.getResource(StandardRoot
.java:216)
>
> 
org.apache.catalina.webresources.StandardRoot.getClassLoaderResource(Sta
ndardRoot.java:225)
> org.apache.catalina.loader.WebappClassLoaderBase.findResource(WebappCl
assLoaderBase.java:884)
>
> 
org.apache.catalina.loader.WebappClassLoaderBase.getResource(WebappClass
LoaderBase.java:1005)
> com.mysql.jdbc.AbandonedConnectionCleanupThread.checkContextClassLoade
rs(AbandonedConnectionCleanupThread.java:90)
>
> 
com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionC
leanupThread.java:63)
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.j
ava:1149)
>
> 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.ja
va:624)
> java.lang.Thread.run(Thread.java:748)
> 
> I hope with the new infor, this group will be able to help me
> resolve the error.

The MySQL Connector/J simply has a bug. Upgrade to the latest version
to see if they have fixed it.

I gave up trying to convince them that it was a problem and that they
needed to fix it, because I guess they fundamentally don't understand
what it means to want to be able to "completely deregister the driver
and shutdown all threads".

- -chris
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