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Add xcom clearing behaviour on task retries #19968

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potiuk merged 1 commit into from
Dec 5, 2021
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Add xcom clearing behaviour on task retries #19968

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3 changes: 3 additions & 0 deletions docs/apache-airflow/concepts/xcoms.rst
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Expand Up @@ -38,6 +38,9 @@ You can also use XComs in :ref:`templates <concepts:jinja-templating>`::

XComs are a relative of :doc:`variables`, with the main difference being that XComs are per-task-instance and designed for communication within a DAG run, while Variables are global and designed for overall configuration and value sharing.

::

Note: If the first task run is not succeeded then on every retry task XComs will be cleared to make the task run idempotent.

Custom Backends
---------------
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