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From Afkham Azeez <afk...@gmail.com>
Subject Re: Terminating long running request threads
Date Sun, 12 Jun 2011 05:35:19 GMT
Thanks! That Valve would be useful to achieve my purpose.

On Sun, Jun 12, 2011 at 12:19 AM, <spring@gmx.eu> wrote:

> Have a look at this Valve:
>
>
> http://svn.apache.org/repos/asf/tomcat/trunk/java/org/apache/catalina/valves
> /StuckThreadDetectionValve.java
>
> For Tomcat 7.0.14
>
> > -----Original Message-----
> > From: Afkham Azeez [mailto:afkham@gmail.com]
> > Sent: Samstag, 11. Juni 2011 19:23
> > To: Tomcat Users List
> > Subject: Re: Terminating long running request threads
> >
> > Thanks Rainer. I think I can use the RequestProcessor MBeans.
> >
> > Thanks
> > Azeez
> >
> > On Sat, Jun 11, 2011 at 8:41 PM, Rainer Jung
> > <rainer.jung@kippdata.de>wrote:
> >
> > > On 11.06.2011 09:30, Afkham Azeez wrote:
> > > > Folks,
> > > > Is there any API to get hold of Tomcat's Connector thread pools?
> > >
> > > Each request is registered with an MBean in the MBeanServer.
> > > As long as the request is running, the MBean contains
> > additional info,
> > > like the URI, when the request started, the thread name etc.
> > >
> > > This gives you enough info to find long running requests
> > and to find the
> > > thread. But there's no non-deprecated Java API known to have no side
> > > effects to terminate a thread. If it were (or you find
> > one), we had to
> > > check how the thread pool behaves w.r.t. "vanishing" threads.
> > >
> > > Regards,
> > >
> > > Rainer
> > >
> > > > On Thu, Jun 9, 2011 at 10:58 PM, Afkham Azeez
> > <afkham@gmail.com> wrote:
> > > >
> > > >>
> > > >>
> > > >> On Thu, Jun 9, 2011 at 10:51 PM, Caldarale, Charles R <
> > > >> Chuck.Caldarale@unisys.com> wrote:
> > > >>
> > > >>>> From: Afkham Azeez [mailto:afkham@gmail.com]
> > > >>>> Subject: Terminating long running request threads
> > > >>>
> > > >>>> is there a way to get hold of these long running threads
> > > >>>> & terminate them?
> > > >>>
> > > >>> This is not an issue specific to Tomcat; there is no
> > way to safely
> > > >>> terminate a Java thread without the cooperation of that
> > thread.  Best
> > > if you
> > > >>> can code your webapp so that your request processors
> > periodically check
> > > if
> > > >>> they've been running too long and give up if so.
> > > >>>
> > > >>
> > > >> Yes, it is not a Tomcat specific issue. The thing is, we
> > don't have
> > > total
> > > >> control over what type of webapps will be deployed. We
> > do restrict
> > > certain
> > > >> operations using a Java Security Manager, but I do not
> > think we can
> > > restrict
> > > >> the running time of a Thread using a security manager. Using
> > > >> the ThreadMXBean we can monitor the time each thread
> > takes, and get the
> > > >> thread IDs of long running threads. It may be possible
> > to get that
> > > thread to
> > > >> terminate if we have some support for that from the
> > Tomcat threadpool.
> > > Just
> > > >> thinking out loud.
> > > >>
> > > >> Thanks
> > > >> Azeez
> > >
> > >
> > >
> > ---------------------------------------------------------------------
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> > >
> > >
> >
>
>
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