Backgroundrb devel - Feb 2008 - followup on another cron scheduling issue

About a week ago I mailed a question to the list about a cron scheduling
problem (worker running on an non-scheduled day) ... I have little bit
more information on this problem (but no patch, sorry! :-)

 

Am running 1.0.1 + Meng Kuan''s recent patch to cron_trigger.rb.

 

I have a worker scheduled ala:

 

  :debugger_worker:

    :ping:

      :trigger_args: 0 0/5 09-17 * * 1,3,5 *

 

(in other words, run every 5 minutes between 9a - 5p on Mon/Wed/Fri.)

 

Here''s what happened:

 

Correct: The worker ran correctly every 5 minutes on Friday, 9a - 5p.

Incorrect: It ran once on Saturday at 9a, but did not run again that
day.

Correct: It did not run on Sunday.

Correct: It ran every 5 minutes on Monday, 9a - 5p.

Incorrect: It ran once on Tuesday at 9a, and did not yet run again that
day.

Correct: Ran every 5 minutes on Wednesday, 9a - 5p

Incorrect: Ran once on Thursday at 9a, and did not run again that day.

 

Seems like the scheduler schedules one errant run on the first "off
day"
after an "on day."

 

-Tom

 

Tom Wood

thomas.a.wood at uconn.edu <mailto:thomas.a.wood at uconn.edu> 

ITS Applications Developer

University of Connecticut Libraries

 

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On Feb 7, 2008 10:55 PM, Tom Wood <thomas.a.wood at uconn.edu>
wrote:
>
>
>
>
> About a week ago I mailed a question to the list about a cron scheduling
> problem (worker running on an non-scheduled day) ? I have little bit more
> information on this problem (but no patch, sorry! :-)
>
>
>
> Am running 1.0.1 + Meng Kuan''s recent patch to cron_trigger.rb.
>
>
>
> I have a worker scheduled ala:
>
>
>
>   :debugger_worker:
>
>     :ping:
>
>       :trigger_args: 0 0/5 09-17 * * 1,3,5 *
>
>
>
> (in other words, run every 5 minutes between 9a ? 5p on Mon/Wed/Fri.)
>
>
>
> Here''s what happened:
>
>
>
> Correct: The worker ran correctly every 5 minutes on Friday, 9a ? 5p.
>
> Incorrect: It ran once on Saturday at 9a, but did not run again that day.
>
> Correct: It did not run on Sunday.
>
> Correct: It ran every 5 minutes on Monday, 9a ? 5p.
>
> Incorrect: It ran once on Tuesday at 9a, and did not yet run again that
day.
>
> Correct: Ran every 5 minutes on Wednesday, 9a ? 5p
>
> Incorrect: Ran once on Thursday at 9a, and did not run again that day.
>
>
>
Well, Cron Scheduler bugs are getting fixed. I am writing exhaustive
specs for cron trigger. Check out this pastie:

http://pastie.caboo.se/148945