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https://issues.apache.org/jira/browse/AIRFLOW-5071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16896155#comment-16896155
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Ash Berlin-Taylor commented on AIRFLOW-5071:
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Can you share the DAG file? That might be easiest. I'm not looking for anything
specific, just trying to think what might be causing this problem.
Do you have two schedulers running?
> Thousand os Executor reports task instance X finished (success) although the
> task says its queued. Was the task killed externally?
> ----------------------------------------------------------------------------------------------------------------------------------
>
> Key: AIRFLOW-5071
> URL: https://issues.apache.org/jira/browse/AIRFLOW-5071
> Project: Apache Airflow
> Issue Type: Bug
> Components: DAG, scheduler
> Affects Versions: 1.10.3
> Reporter: msempere
> Priority: Critical
>
> I'm opening this issue because since I update to 1.10.3 I'm seeing thousands
> of daily messages like the following in the logs:
>
> ```
> {{__init__.py:1580}} ERROR - Executor reports task instance <TaskInstance: X
> 2019-07-29 00:00:00+00:00 [queued]> finished (success) although the task says
> its queued. Was the task killed externally?
> {{jobs.py:1484}} ERROR - Executor reports task instance <TaskInstance: X
> 2019-07-29 00:00:00+00:00 [queued]> finished (success) although the task says
> its queued. Was the task killed externally?
> ```
> -And looks like this is triggering also thousand of daily emails because the
> flag to send email in case of failure is set to True.-
> I have Airflow setup to use Celery and Redis as a backend queue service.
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