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From Pid <...@pidster.com>
Subject Re: Disable class monitoring for reloading container classes
Date Thu, 07 Oct 2010 21:52:19 GMT
On 07/10/2010 22:30, Christopher Schultz wrote:
> Jane,
> 
> On 10/6/2010 3:39 PM, Jane Muse wrote:
>> There's a backgroundProcessor method in tomcat that checks whether
>> container classes need to be reloaded, and checks for session
>> expirations. Is it possible to disable this method, like you can disable
>> class reloading for the context with reloadable="false"? I'm using
>> tomcat 6.0.18 on an IBM i (OS400)  version V6R1. When daylight savings
>> time hits, our application gets reloaded, and the following statements
>> are in catalina.out: 
> 
>> Mar 14, 2010 3:00:08 AM org.apache.catalina.core.StandardContext reload
>> INFO: Reloading this Context has started
> 
> Does this happen with every DST change that results in the clock being
> set backward? I haven't looked at the code, but I can't imagine that the
> BackgroundProcessor keeps the timestamp of the last file scan around for
> comparison. Instead, I would expect logic similar to this:
> 
> while(true) {
>   sleep
> 
>   find files modified since last context startup
> 
>   if file list is non-empty, reload context
> }
> 
> If the above logic is the actual implementation, then the only time
> you'd have a problem is when you've deployed a webapp during the window
> covered by the DST-clock-setback. For instance, if the clock goes from
> 02:00 early Sunday morning to 00:00 early Sunday morning, then you
> should only experience some kind of confusion if you deploy between
> 00:00 and 02:00 the first time through early on Sunday morning.

+1 actually. Logical.


p

> I've never observed a DST clock-setback trigger a webapp reload.
> 
> -chris



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