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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AIRFLOW-888) Operators should not push XComs by default
Date Sun, 02 Sep 2018 18:07:04 GMT

    [ https://issues.apache.org/jira/browse/AIRFLOW-888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16601584#comment-16601584
] 

Apache Spark commented on AIRFLOW-888:
--------------------------------------

User 'jlowin' has created a pull request for this issue:
https://github.com/apache/incubator-airflow/pull/2092

> Operators should not push XComs by default
> ------------------------------------------
>
>                 Key: AIRFLOW-888
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-888
>             Project: Apache Airflow
>          Issue Type: Improvement
>          Components: operators, xcom
>            Reporter: Jeremiah Lowin
>            Assignee: Jeremiah Lowin
>            Priority: Major
>             Fix For: 1.10.0
>
>
> Currently, Airflow pushes an XCom every time an Operator returns a result. This behavior
is overeager and potentially taxing on the database (since there are no restrictions on what
an Operator can return).
> Some users may rely on this behavior, so it can still be enabled in airflow.cfg.



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