[jira] [Updated] (AIRFLOW-3775) Support for custom task scheduler in airflow, apart of time based [default] one.

["Abhishek Sharma (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-3775?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Abhishek Sharma updated AIRFLOW-3775:
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    Attachment: screenshot2.png
                Screenshot1.png

> Support for custom task scheduler in airflow, apart of time based [default] one.
> --------------------------------------------------------------------------------
>
>                 Key: AIRFLOW-3775
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-3775
>             Project: Apache Airflow
>          Issue Type: Wish
>          Components: scheduler
>            Reporter: Abhishek Sharma
>            Priority: Major
>         Attachments: Screenshot1.png, screenshot2.png
>
>
> Currently, airflow scheduler picks DAGs for execution based on cron string mentioned in the schedule. 
> I have a requirement in which I want to trigger the DAGs based on the event. Currently, I am managing such requirement by running an application which triggers DAGs when an event occurs.  DAGs schedule with such requirement is NONE and concurrency is 1. 
> Airflow considers all runs as manual triggers, and Airflow UI is messed up for that. Also, multiple applications required for triggering DAGs based on different condition.
> I propose to have to multiple schedulers support in Airflow, and like queue feature at a task level, we should have the scheduler option to at the task level, which by default would be time-based however on providing specific value will be picked by that instance of the scheduler.  
>  



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