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https://issues.apache.org/jira/browse/AIRFLOW-4567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16853120#comment-16853120
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Thomas Hillyer commented on AIRFLOW-4567:
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It would be nice to figure out why it's occurring, and if it's related to the
error I'm seeing when celery commands fail and crash the worker and make all
the scheduler processes time out.
So yes, I think it is potentially causing harm
> sqlalchemy DB connection invalidated. Reconnecting
> --------------------------------------------------
>
> Key: AIRFLOW-4567
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4567
> Project: Apache Airflow
> Issue Type: Bug
> Affects Versions: 1.10.3
> Reporter: raphael auv
> Priority: Major
>
> With airflow 1.10.3 , postgres 9.5.17 and SQLAlchemy 1.2.19
>
> I'm getting a lot of :
> {code:java}
> [2019-05-24 08:50:18,644] {{__init__.py:305}} INFO - Filling up the DagBag
> from /usr/local/airflow/dags
> [2019-05-24 08:50:25,771] {{sqlalchemy.py:81}} WARNING - DB connection
> invalidated. Reconnecting...
> [2019-05-24 08:50:36,785] {{sqlalchemy.py:81}} WARNING - DB connection
> invalidated. Reconnecting...
> [2019-05-24 08:50:47,801] {{sqlalchemy.py:81}} WARNING - DB connection
> invalidated. Reconnecting...
> [2019-05-24 08:50:58,803] {{sqlalchemy.py:81}} WARNING - DB connection
> invalidated. Reconnecting...
> [2019-05-24 08:51:02,069] {{__init__.py:51}} INFO - Using executor
> LocalExecutor
> {code}
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