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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AIRFLOW-168) schedule_interval @once scheduling dag atleast twice
Date Sat, 28 May 2016 12:18:12 GMT

    [ https://issues.apache.org/jira/browse/AIRFLOW-168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15305327#comment-15305327
] 

ASF subversion and git services commented on AIRFLOW-168:
---------------------------------------------------------

Commit 19fa9852e8ad57036fff12dd28f5b4e67642bce7 in incubator-airflow's branch refs/heads/master
from [~bolke]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-airflow.git;h=19fa985 ]

AIRFLOW-168 Correct evaluation of @once schedule

If the schedule @once was used with a start_date two dagruns
would be created as next_run_date would be none and compared
against dag.start_date. This patch fixes that by returning
immediately if a dagrun has already occured with an @once
schedule.


> schedule_interval @once scheduling dag atleast twice
> ----------------------------------------------------
>
>                 Key: AIRFLOW-168
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-168
>             Project: Apache Airflow
>          Issue Type: Bug
>          Components: scheduler
>    Affects Versions: Airflow 1.7.1.2
>            Reporter: Sumit Maheshwari
>            Assignee: Bolke de Bruin
>         Attachments: Screen Shot 2016-05-24 at 9.51.50 PM.png, screenshot-1.png
>
>
> I was looking at example_xcom example and found that it got scheduled twice. Ones at
the start_time and ones at the current time. To be correct I tried multiple times (by reloading
db) and its same. 
> I am on airflow master, using sequential executor with sqlite3. Though it works as expected
on a prod env which is running v1.7 with celery workers and mysql backend.  



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