Overnight Tidal Scheduling Scenario

[Douglas Morrisey]

Hi All,

I have a specific overnight scheduling scenario that I could use some help with, details for this example are below:

1) Job A runs every day, starting 10 minutes after midnight (12:10 AM)

2) Jobs B, C, and D run every Wednesday and Friday, starting at 9 PM, and run in sequence B > C > D

     - Job B runs in 1 hour (9 - 10 PM), job C runs in 1 hour (10 - 11 PM), but job D runs for 3 hours (11 PM to 2 AM next day)

2) Tidal is configured to cut over to the next day's schedule at midnight, meaning on Wednesday and Friday, job D will still be running when the next day's schedule starts

3) If job B is still running from the previous day, I don't want my daily Job (Job A) to start on the next day until Job B from the previous day has finished

If I schedule job A to start every day at 2 AM to avoid this conflict, then every Monday, Tuesday, and Thursday I'm wasting 2 hours of our schedule between 12 AM and 2 AM on the days that job D doesn't run.

Is there any way to set up dependencies like this, where my current day's Job A is dependent on the previous day's Job D?

Thanks in advance for the help!

Best Regards,

Doug M.

[Lumi Mihalcea · Accepted solution]

From Job Dependency definition screen, edit your dependency and select Last Occurence (instead of Match occurrence) and Date Offset 1 - this will look at the previous day

[Fred Delgrosso]

Hi,

Did you ever solve your dependency loop issue as I am battling one mow. Do you have any advise on how to approach these loop issues?

Thanks

[Lumi Mihalcea]

Hello Fred,

I did not have a loop issue, I was suggesting a way to resolve the issue Doug had at the time. Why don't you post the issue you are having? You can also post it in Yahoo Groups (Tidal).

Thanks,

Lumi

[Douglas Morrisey]

Hi Fred,

Unfortunately you're not able to set a job to be dependent on itself, but there may be one way you can get this scenario to work:

•  Job A runs 6 times throughout the day every two hours 9AM to 7PM
•  Jobs should run in order: Job A(1) > Job A(2) > Job A(3) > Job A(4) > Job A(5) > Job A(6)
•  You only want the next occurrence of Job A to run if the previous occurrence Completed Normally.

Try the following:

1.  Create a public number variable and set the default value = 1 (VAR_X = 1)
2.  Create a variable action to set VAR_X = 0
3.  Create a variable action to set VAR_X = 1
4.  Create a simple job (Job B) that performs any function that will always Complete Normally
5.  Set Job B to run on the same schedule as Job A (6 times a day, new occurrence)
6.  Set Job B to be dependent on Job A Completed Normally, use Match Occurrence setting
7.  Create a Job Event, JOB EVENT B:

•  Event Trigger: Job Completed Normally
•  Associated Actions: Select the variable action in #3 ( set VAR_X = 1 )
•  Associated Job(s): Select Job B

 8. Create a Job Event, JOB EVENT A:

•  Event Trigger: Job active
•  Associated Actions: Select the variable action in #2 ( set VAR_X = 0 )
•  Associated Job(s): Select Job A

If you set the above up correctly, the schedule should progress like this:

•  Since Default value of VAR_X = 1, the first instance of Job A (1) will kick off
•  When Job A (1) becomes active, JOB EVENT A triggers and set VAR_X = 0
•  Job A (1) will continue running until completed or failed
•  Job A (2) won’t start yet because of the variable dependency VAR_X = 0
•  Job B (1) won’t run until Job A (1) = Completed Normally
•  Once Job A (1) = Completed Normally, Job B (1) will run and Complete Normally
•  When Job B (1) = Complete Normally, JOB EVENT B triggers and set VAR_X = 1
•  Job A (2) will now start since VAR_X = 1 again
•  When Job A (2) becomes active, JOB EVENT A triggers again and sets VAR_X = 0

And the cycle continues for all 6 instances.

Try it out and let me know if it works for you, hope that helps!

[tony_c_ruiz]

Did you ever resolve this issue.I have the same problem too. Even with the "Last occurence" and Date Offset to 1, I am getting an error message that hte dependency will result in a loop.

[Douglas Morrisey]

Sorry all, I don't frequent this site but i saw a lot of views on this thread just now and figured i would mark the correct answer.

Thanks a bunch Lumi!

My scenario wasn't a loop one, it was a cross-day scheduling question with several different jobs.

For Job A starting at 12:10 every day, i added the following settings which worked:

- Date Offset 1

- Ignore Dependency if job is not in schedule - Checked