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From Peter Ro├čbach ...@objektpark.de>
Subject Re: Terminating long running request threads
Date Sun, 12 Jun 2011 09:49:02 GMT
HI,

can we add the unique Thread Id, please?

Peter

Am 11.06.2011 um 17:11 schrieb Rainer Jung:

> 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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