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https://issues.apache.org/jira/browse/AIRFLOW-680?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dan Davydov resolved AIRFLOW-680.
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Resolution: Fixed
> Making `airflow run` not use a db connection pool
> -------------------------------------------------
>
> Key: AIRFLOW-680
> URL: https://issues.apache.org/jira/browse/AIRFLOW-680
> Project: Apache Airflow
> Issue Type: Improvement
> Components: core
> Reporter: Dan Davydov
> Assignee: Dan Davydov
>
> The goal here is to reduce the number of active database sessions on the
> metadata database. Note that sqla create database connection pools and that
> when we have thousands of tasks emitting heartbeats it can lead to way too
> many connections, ultimately maxing out on the MySQL side. #1002 describes
> the issue.
> (quoted from mistercrunch:
> https://github.com/apache/incubator-airflow/pull/1021)
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