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From DBol...@dsginc.biz
Subject Fw: TomCat 8.5.23 application not responding
Date Fri, 03 Nov 2017 21:17:45 GMT
From:   Christopher Schultz <chris@christopherschultz.net>
To:     users@tomcat.apache.org
Date:   11/02/2017 02:28 PM
Subject:        Re: TomCat 8.5.23 application not responding



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Darin,

On 11/2/17 12:55 PM, DBolken@dsginc.biz wrote:
> I have a TomCat 8.5.23 service running on a Windows 2008 R2.  It is
>  currently running a third party web commerce application.  It will
> run great until randomly one day the application will stop
> responding.  When you try to go to the application URL it sits and
> spins.  I look at the catalina log and found the below errors at
> the time it stop responding. Is this a tomcat configuration issue
> or application related.
> 
> I see three specific warning/severe messages in Tomcat.
> 
> Error one: 02-Nov-2017 10:03:23.787 WARNING
> [http-nio-9080-exec-402] 
> com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getForComponent
>  Unable to find component with ID searchPattern in view.
> 
> Then right after there is a severe message error 2:
> 
> 02-Nov-2017 10:03:23.896 SEVERE [http-nio-9080-exec-455] 
> org.restlet.engine.http.adapter.ServerAdapter.commit An exception
> occured writing the response entity 
> org.apache.catalina.connector.ClientAbortException:
> java.io.IOException: An established connection was aborted by the
> software in your host machine
> 
> Then the warning messages constant all the way down until this all
> the way down until we had to reboot the service because of no
> response.
> 
> 02-Nov-2017 10:03:23.896 WARNING [http-nio-9080-exec-455] 
> org.restlet.engine.http.HttpServerHelper.handle Error while
> handling an HTTP server call: 02-Nov-2017 10:03:23.896 INFO
> [http-nio-9080-exec-455] 
> org.restlet.engine.http.HttpServerHelper.handle Error while
> handling an HTTP server call java.lang.IllegalStateException:
> Cannot call sendError() after the response has been committed

Can you take some thread dumps to show what the Tomcat threads are
doing? One thread dump will probably be very long, but go ahead and
post the whole thing to the list.

- -chris
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I have been unable to post the thread dump because of size no matter how 
much I send under the 1 MB rule.  Is there another way I can send it to 
you.  Thanks.


I do see a lot of Blocked messages, see example.  I was not able to post 
the whole dump.


"http-nio-9080-exec-305" #3888 daemon prio=5 os_prio=0 
tid=0x000000001f445000 nid=0x230 waiting for monitor entry 
[0x000000004341d000]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at 
com.mincron.api.restlet.dm.ProductDM.getCategoryItemList(Unknown Source)
        - waiting to lock <0x0000000696269dc0> (a java.lang.Class for 
com.mincron.api.restlet.dm.ProductDM)
        at 
com.mincron.api.restlet.resource.CategoryItemListResource.retrieve(Unknown 
Source)



- Darin
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