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https://issues.apache.org/jira/browse/AIRFLOW-168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15302703#comment-15302703
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Bolke de Bruin commented on AIRFLOW-168:
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I confirmed that this is actually also an issue on 1.7.1, but you will not see
it:
{code}
mysql> select * from dag_run;
+----+--------------+---------------------+---------+---------------------------------------+------------------+------+----------+---------------------+
| id | dag_id | execution_date | state | run_id
| external_trigger | conf | end_date | start_date |
+----+--------------+---------------------+---------+---------------------------------------+------------------+------+----------+---------------------+
| 1 | example_xcom | 2016-05-26 19:01:39 | running |
scheduled__2016-05-26T19:01:39.071011 | 0 | NULL | NULL |
2016-05-26 19:01:39 |
| 2 | example_xcom | 2015-01-01 00:00:00 | running |
scheduled__2015-01-01T00:00:00 | 0 | NULL | NULL |
2016-05-26 19:01:44 |
+----+--------------+---------------------+---------+---------------------------------------+------------------+------+----------+---------------------+
{code}
> 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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