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Tomcat hangs on shutdown [message #1062679]

Mon, 10 June 2013 07:04

Eclipse User

Hello everyone,

I have still a problem with my RAP application running on tomcat. My Tomcat hangs on shutdown.

I start a long running database operation. ProgressMonitorDialog is running and blocks UI. And then I try to shutdown my tomcat. Code snippet:see attachment "code snippet".

After a while I see this exception in a loop:
org.eclipse.core.runtime.AssertionFailedException: assertion failed: The applica
tion has not been initialized.
at org.eclipse.core.runtime.Assert.isTrue(Assert.java:110)
at org.eclipse.core.internal.runtime.InternalPlatform.assertInitialized(
InternalPlatform.java:139)
at org.eclipse.core.internal.runtime.InternalPlatform.addLogListener(Int
ernalPlatform.java:132)
at org.eclipse.core.runtime.Platform.addLogListener(Platform.java:498)
at org.eclipse.ui.statushandlers.StatusManager.<init>(StatusManager.java
:131)
at org.eclipse.ui.statushandlers.StatusManager.getManager(StatusManager.
java:125)
at org.eclipse.ui.application.WorkbenchAdvisor.eventLoopException(Workbe
nchAdvisor.java:323)
at org.eclipse.ui.internal.ExceptionHandler.handleException(ExceptionHan
dler.java:66)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2737)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2694)
at org.eclipse.ui.internal.Workbench.access$5(Workbench.java:2530)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:702)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.ja
va:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.jav
a:685)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:157)
at cda.ea.manager.client.Application.createUI(Application.java:82)
at org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWTLifeCycle
.java:177)
at org.eclipse.rwt.internal.lifecycle.RWTLifeCycle$UIThreadController.ru
n(RWTLifeCycle.java:289)
at java.lang.Thread.run(Thread.java:662)
at org.eclipse.rwt.internal.lifecycle.UIThread.run(UIThread.java:102)
Error while logging event loop exception:

I tried to analyse a thread dump, but I have no idea what it can be. Can you help me?

Thanks in advance
Daria

Attachment: code snippet.txt
(Size: 1.70KB, Downloaded 404 times)
Attachment: threaddump-1370858204346.tdump
(Size: 28.79KB, Downloaded 373 times)

Re: Tomcat hangs on shutdown [message #1062748 is a reply to message #1062679]

Mon, 10 June 2013 11:20

Eclipse User

Hi Daria,
sorry, but I have no solution in hand for RAP 1.5. As I already
mentioned in the bug
407371: Tomcat hangs during shutdown
https://bugs.eclipse.org/bugs/show_bug.cgi?id=407371
the UICallBack has been reworked in RAP 2.0 and I can't reproduce such a
hang anymore with RAP 2.0+. It's not possible to extract a simple patch
for backporting the reworked UICallBack (ServerPushSession). If you can
reproduce the hang with RAP 2.0+ please reopen the bug.
Best,
Ivan

On 6/10/2013 3:55 PM, Daria Huber wrote:
> Hello everyone,
>
> I have still a problem with my RAP application running on tomcat. My Tomcat hangs on shutdown.
>
> I start a long running database operation. ProgressMonitorDialog is running and blocks UI. And then I try to shutdown my tomcat. Code snippet:see attachment "code snippet".
>
> After a while I see this exception in a loop:
> org.eclipse.core.runtime.AssertionFailedException: assertion failed: The applica
> tion has not been initialized.
> at org.eclipse.core.runtime.Assert.isTrue(Assert.java:110)
> at org.eclipse.core.internal.runtime.InternalPlatform.assertInitialized(
> InternalPlatform.java:139)
> at org.eclipse.core.internal.runtime.InternalPlatform.addLogListener(Int
> ernalPlatform.java:132)
> at org.eclipse.core.runtime.Platform.addLogListener(Platform.java:498)
> at org.eclipse.ui.statushandlers.StatusManager.<init>(StatusManager.java
> :131)
> at org.eclipse.ui.statushandlers.StatusManager.getManager(StatusManager.
> java:125)
> at org.eclipse.ui.application.WorkbenchAdvisor.eventLoopException(Workbe
> nchAdvisor.java:323)
> at org.eclipse.ui.internal.ExceptionHandler.handleException(ExceptionHan
> dler.java:66)
> at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2737)
> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2694)
> at org.eclipse.ui.internal.Workbench.access$5(Workbench.java:2530)
> at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:702)
> at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.ja
> va:332)
> at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.jav
> a:685)
> at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:157)
> at cda.ea.manager.client.Application.createUI(Application.java:82)
> at org.eclipse.rwt.internal.lifecycle.RWTLifeCycle.createUI(RWTLifeCycle
> java:177)
> at org.eclipse.rwt.internal.lifecycle.RWTLifeCycle$UIThreadController.ru
> n(RWTLifeCycle.java:289)
> at java.lang.Thread.run(Thread.java:662)
> at org.eclipse.rwt.internal.lifecycle.UIThread.run(UIThread.java:102)
> Error while logging event loop exception:
>
> I tried to analyse a thread dump, but I have no idea what it can be. Can you help me?
>
> Thanks in advance
> Daria
>

--
Ivan Furnadjiev

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Re: Tomcat hangs on shutdown [message #1062775 is a reply to message #1062748]

Mon, 10 June 2013 13:02

Eclipse User

Hallo Ivan,

Thanks for your quick reply.
We found already a solution for this bug:https://bugs.eclipse.org/bugs/show_bug.cgi?id=407371
We used for refreshing of the tableview "Timer" and not "Executor". Timer is very sensitive to exceptions and is never destroyed if exception is thrown.

But I think we running here into this bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=409843

What do you think?

Daria

Re: Tomcat hangs on shutdown [message #1062779 is a reply to message #1062775]

Mon, 10 June 2013 13:16

Eclipse User

Hi Daria,
it's possible. We didn't have time to investigate the issue in bug
409843 ( we are busy with Kepler release ). But it's definitely
something, which will address with a higher priority. Can you provide
thread dumps when Tomcat hangs (similar to those in bug 409843)?
Best,
Ivan

On 6/10/2013 8:02 PM, Daria Huber wrote:
> Hallo Ivan,
>
> Thanks for your quick reply.
> We found already a solution for this
> bug:https://bugs.eclipse.org/bugs/show_bug.cgi?id=407371
> We used for refreshing of the tableview "Timer" and not "Executor".
> Timer is very sensitive to exceptions and is never destroyed if
> exception is thrown.
>
> But I think we running here into this bug:
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=409843
>
> What do you think?
>
> Daria

--
Ivan Furnadjiev

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Re: Tomcat hangs on shutdown [message #1062863 is a reply to message #1062779]

Tue, 11 June 2013 03:39

Eclipse User

Hi Ivan,

I attached a thread dump to my first post here. Do you need something else? I will try to reproduce this bug with RAP 2.1. And will provide new thread dump if possible.

Daria

Re: Tomcat hangs on shutdown [message #1062869 is a reply to message #1062863]

Tue, 11 June 2013 03:58

Eclipse User

Hi Daria,
thread dumps from RAP 2.1 will be helpful.
Best,
Ivan

On 6/11/2013 10:39 AM, Daria Huber wrote:
> Hi Ivan,
>
> I attached a thread dump to my first post here. Do you need something
> else? I will try to reproduce this bug with RAP 2.1. And will provide
> new thread dump if possible.
>
> Daria

--
Ivan Furnadjiev

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Re: Tomcat hangs on shutdown [message #1064034 is a reply to message #1062869]

Mon, 17 June 2013 07:30

Eclipse User

Hi Ivan,
lucky Daria is on vacation, and now it is up to me to solve our "Tomcat-shutdown"-problem.
We've now built our RAP application with RAP 2.1 M2 but the problem is still the same.
Attached you will find the associated threaddump, hope it helps.
Best regards
Pierre

Attachment: threaddump_RAP21M2_20130617.txt
(Size: 26.60KB, Downloaded 618 times)

Re: Tomcat hangs on shutdown [message #1064092 is a reply to message #1064034]

Mon, 17 June 2013 11:11

Eclipse User

Hi Pierre,
maybe Daria has a point and you are running into this bug:
409843: Session reaper gets blocked by the worker tread
https://bugs.eclipse.org/bugs/show_bug.cgi?id=409843
This bug has a priority and we will address it in a closed future after
the Kepler release. If you want to continue experimenting you could try
the proposed in the bug fix - use a distinct final object in
UIThread#getLock() instead of this.
In any case a self running snippet to reproduce the hang will be welcomed.
Best,
Ivan

On 6/17/2013 3:18 PM, Pierre Laaser wrote:
> Hi Ivan,
> lucky Daria is on vacation, and now it is up to me to solve our "Tomcat-shutdown"-problem.
> We've now built our RAP application with RAP 2.1 M2 but the problem is still the same.
> Attached you will find the associated threaddump, hope it helps.
> Best regards
> Pierre

--
Ivan Furnadjiev

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Re: Tomcat hangs on shutdown [message #1064103 is a reply to message #1064034]

Mon, 17 June 2013 12:06

Eclipse User

Hi again,
I think I've managed to reproduce it with our Workbench Demo. In
"Planning" perspective start long running operation with dialog and try
to shutdown the tomcat while the progress is running.
Best,
Ivan

On 6/17/2013 3:18 PM, Pierre Laaser wrote:
> Hi Ivan,
> lucky Daria is on vacation, and now it is up to me to solve our "Tomcat-shutdown"-problem.
> We've now built our RAP application with RAP 2.1 M2 but the problem is still the same.
> Attached you will find the associated threaddump, hope it helps.
> Best regards
> Pierre

--
Ivan Furnadjiev

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Re: Tomcat hangs on shutdown [message #1064193 is a reply to message #1062775]

Tue, 18 June 2013 04:00

Eclipse User

Hi Daria,
as I can finally reproduce the issue (even with completely different
from your description setup) I've reopened the bug
407371: Tomcat hangs during shutdown
https://bugs.eclipse.org/bugs/show_bug.cgi?id=407371
Best,
Ivan

On 6/10/2013 8:02 PM, Daria Huber wrote:
> Hallo Ivan,
>
> Thanks for your quick reply.
> We found already a solution for this
> bug:https://bugs.eclipse.org/bugs/show_bug.cgi?id=407371
> We used for refreshing of the tableview "Timer" and not "Executor".
> Timer is very sensitive to exceptions and is never destroyed if
> exception is thrown.
>
> But I think we running here into this bug:
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=409843
>
> What do you think?
>
> Daria

--
Ivan Furnadjiev

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

Re: Tomcat hangs on shutdown [message #1064482 is a reply to message #1064193]

Wed, 19 June 2013 09:09

Eclipse User

After two days of investigation this is not so correct. In the attached
thread dump by Pierre the Tomcat main thread is blocked. This is not the
case with our Workbench Demo where the Tomcat main thread terminated
successfully, but the JavaVM is not destroyed. Pierre, could you provide
a complete simple self-running project to reproduce the blocked Tomcat
main thread?
Thanks,
Ivan

On 6/18/2013 11:00 AM, Ivan Furnadjiev wrote:
> Hi Daria,
> as I can finally reproduce the issue (even with completely different
> from your description setup) I've reopened the bug
> 407371: Tomcat hangs during shutdown
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=407371
> Best,
> Ivan
>
> On 6/10/2013 8:02 PM, Daria Huber wrote:
>> Hallo Ivan,
>>
>> Thanks for your quick reply.
>> We found already a solution for this
>> bug:https://bugs.eclipse.org/bugs/show_bug.cgi?id=407371
>> We used for refreshing of the tableview "Timer" and not "Executor".
>> Timer is very sensitive to exceptions and is never destroyed if
>> exception is thrown.
>>
>> But I think we running here into this bug:
>> https://bugs.eclipse.org/bugs/show_bug.cgi?id=409843
>>
>> What do you think?
>>
>> Daria
>

--
Ivan Furnadjiev

Twitter: @EclipseRAP
Blog: http://eclipsesource.com/blogs/

Professional services for RAP and RCP?
http://eclipsesource.com/services/rap/

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