I would like to be able to schedule my task in Day agenda simply by moving a given task up and down on the day time line. Is it possible?
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I want to implement a delay task and found a cadence cron example, how to use cadence to implement a delay task?
Cron is for periodic execution of some functionality.
If you need to delay a task you can call sleep and the beginning of the workflow and then call an activity that executes the task.
Cadence supports both activity and workflow delaying.
Activity delay can be achieved with Workflow.Sleep API
Workflow delay can be achieved with DelayStart option. See https://github.com/uber-go/cadence-client/blob/e66e2d4da8def80e7a5730b824a2de7a28f5c050/internal/client.go#L415
For regular workflows, this will delay execution that many seconds, then start.
For cron workflows, this will delay ONLY the FIRST execution. For example you want to set up an hourly cron workflow but you want it to start running from next week on Monday at 9AM. You can pass delayStart seconds option to delay till that Monday between 8AM and 9AM so it will start at 9AM since it's the next schedule.
How can I prevent future occurrences from running on a Task where I set the Repeat option when triggering the task. Let's say I started a task at 1:00 PM and told it to repeat every 5 minutes for 1 hour. Is there a way to prevent or cancel remaining events from firing prior to the task ending (e.g. after 7 of the 12 have run)?
there is a "natural" ( I mean thought parameter) way to limit the number of triggering a dag (let say every 24 hours).
I don't want to schedule it, but some user can trigger the same dag multiple time, and for resources and others reason, I want it only once .
As I see "depends_on_past" depend only against the previous run, but it could be many time a day.
Thx
Not directly, but you could likely implement task_instance_mutation_hook in the first task of the DAG, it could then immediately fail the task if you check if it's been run several times the same day.
https://airflow.apache.org/docs/apache-airflow/stable/concepts/cluster-policies.html#task-instance-mutation
Using the Eclipse Job class, it is possible to schedule a job to run certain amount of time after it is scheduled, like this:
Job job = getMyJob();
job.schedule(delayInMilliseconds);
This will run the job after the specified delay, is there a way to create a job that runs at a given hour of the day, everyday?, for example, I want to run a job at 5pm, everyday, so if Eclipse happens to be open at 5pm the job will run, if it is closed, then the job will be skipped that day and it will wait for the next day.
Is there a way to create this type of recurrent job?
No, the Job API doesn't have anything like this.
You could use something like the scheduleAtFixedRate method of ScheduledExecutorService to schedule a Runnable to submit the job once a day.
Is it possible to introduce dependent tasks in emacs org mode?
Suppose I have three tasks Development, Test, Deploy which should be done one after another. I scheduled the first one with SCHEDULED: and DEADLINE: and want that the second is scheduled automatically after the first one is finished (e.g. I can specify offset from the first task's deadline and the duration of the second task). Or can it at least warn me that tasks overlap? Also if I move the schedule date of one task then following tasks should be moved accordingly.
Check out org-depend, in the contrib directory of the org-mode distribution.
Org-depend is documented on Worg: http://orgmode.org/worg/org-contrib/org-depend.html