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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...4.9 Scheduled processes, firing multiple times?4.9 Scheduled processes, firing multiple times?
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10/16/2008 11:07 AM
 

Heres for hoping.  I ended up taking a few of my custom scheduler items and then exposing the information I need via webservices, then created a Windows Service to perform the same job.  It certainly works better anyway, but makes it that much more complex to move around if I ever needed to.  On the other hand, these are processes that are for custom internal modules so I don't expect to move them around much, if ever.  But the point remains the same--this shouldn't be happening in the scheduler and I shouldn't be forced to pull that functionality out into a Windows service in order to run it correctly.

Keep me posted!


-- Jon Seeley
DotNetNuke Modules
Custom DotNetNuke and .NET Development
http://www.seeleyware.com
 
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12/1/2008 9:44 PM
 

 

Hi guys... This is a pretty serious issue, can someone tell me if there are other threads you know of or any Gemini requests? We have seen this mostly on some updated DNN versions (don't remember this happening before 4.6 I don't think) but its very serious as many scheduled tasks might 'kick off' on top of each other. For things such as notifications and emails this is can cause problems. We have seen examples where a scheduled process that is set to run 'Once every hour' will actually kick off 3 or 4 times within the hour (or more). We have seen another instance on a customers installation where 5 instances of the scheduled task kicked off within the same 1 minute even with the scheduler was set to once every 2 hours etc...

A few other thoughts...

1. We can add internal checking within the task to check if their are currently running items or items that have not yet flagged the succeeded column, however this  still doesn't fix the problem of the scheduled item kicking off, really just because a part of the process and is a performance issue as well.

 

2. A few customers have reported the system locking up if they change the scheduler to timer mode, from what we have checked we do not see any errors that go along with the event log and this etc... Any other ideas?

 

3. Would it not be a reasonable attribute for scheduled tasks to have something like a checkbox that says 'Do not allow schedule to overlap'? If this was on it would never be able to kick off (or just a flag that can be checked in the query that kicks it off) so that it would ignore tasks that were currently running?

 

-Chad

www.datasprings.com

DotNetNuke Modules

 

 

 

 

 
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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...4.9 Scheduled processes, firing multiple times?4.9 Scheduled processes, firing multiple times?


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