[jira] [Closed] (AIRFLOW-1293) Dynamically generated dependency job get marked as Removed state automatically

["Ash Berlin-Taylor (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-1293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ash Berlin-Taylor closed AIRFLOW-1293.
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    Resolution: Information Provided

Anyone encountering this - a task going in to the Removed state means that _next time_ the DAG file parsed it was not there.

Airflow will parse the DAG file many many times on the scheduler, and once for each task being executed on a worker, and the task generated need to be **stable** - you can't generate it just once and then never again.

> Dynamically generated dependency job get marked as Removed state automatically
> ------------------------------------------------------------------------------
>
>                 Key: AIRFLOW-1293
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-1293
>             Project: Apache Airflow
>          Issue Type: Bug
>    Affects Versions: 1.8.0
>            Reporter: kenneth lam
>            Priority: Major
>
> In the dag, set up two task T1 >> T2.
> while task id of T2 is not static as the task id is based on the ip address of the running host.
> As a result, airflow mark T2 as "Removed" and thus can't execute.
> Although the dependency graph is constructed correctly in the web admin page.



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