itscaro commented on a change in pull request #4056: [AIRFLOW-3207] option to
stop task pushing result to xcom
URL: https://github.com/apache/incubator-airflow/pull/4056#discussion_r228468672
##########
File path: airflow/models.py
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@@ -2473,6 +2476,7 @@ def __init__(
run_as_user=None,
task_concurrency=None,
executor_config=None,
+ do_xcom_push=True,
Review comment:
XCOM feature if not used should be disabled by default as in base operators,
users should declare explicitly the use of XCOM so that database is not filled
with useless data.
For backwards compatibility, contrib operators, which currently push to XCOM
by default, should be updated to activate XCOM explicitly, doing this way,
other contrib operators will keep the current behavior of not using XCOM.
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