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From "Jeremiah Lowin (JIRA)" <>
Subject [jira] [Created] (AIRFLOW-888) Operators should not push XComs by default
Date Sun, 19 Feb 2017 14:59:44 GMT
Jeremiah Lowin created AIRFLOW-888:

             Summary: Operators should not push XComs by default
                 Key: AIRFLOW-888
             Project: Apache Airflow
          Issue Type: Improvement
          Components: operators, xcom
            Reporter: Jeremiah Lowin
            Assignee: Jeremiah Lowin
             Fix For: 1.9.0

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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