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Posted to commits@airflow.apache.org by "jack (JIRA)" <ji...@apache.org> on 2019/02/20 12:24:00 UTC

[jira] [Commented] (AIRFLOW-3548) Tasks instances doesn't reuse mysql connection

    [ https://issues.apache.org/jira/browse/AIRFLOW-3548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16772967#comment-16772967 ] 

jack commented on AIRFLOW-3548:
-------------------------------

Are you referring to backend as MySQL?

> Tasks instances doesn't reuse mysql connection
> ----------------------------------------------
>
>                 Key: AIRFLOW-3548
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-3548
>             Project: Apache Airflow
>          Issue Type: Improvement
>          Components: worker
>    Affects Versions: 1.10.1
>            Reporter: Rami Darwish
>            Priority: Minor
>
> Task instances keep opening a new connection to mysql every "job_heartbeat_sec" interval. Ideally, it should open 1 connection for the life span of the task until it finished executing. It seems to ignore sql_alchemy_pool_enabled = True
> We're using airflow 1.10.1, mysql 5.7, SQLAlchemy 1.1.18, Python 2.7.12



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