kaxil commented on a change in pull request #18084:
URL: https://github.com/apache/airflow/pull/18084#discussion_r704311443
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File path: airflow/models/xcom.py
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@@ -55,6 +56,17 @@ class BaseXCom(Base, LoggingMixin):
task_id = Column(String(ID_LEN, **COLLATION_ARGS), primary_key=True)
dag_id = Column(String(ID_LEN, **COLLATION_ARGS), primary_key=True)
+ # For _now_, we link this via execution_date, in 2.3 we will migrate this
table to use run_id too
+ dag_run = relationship(
+ "DagRun",
+ primaryjoin="""and_(
+ BaseXCom.dag_id == foreign(DagRun.dag_id),
+ BaseXCom.execution_date == foreign(DagRun.execution_date)
+ )""",
Review comment:
Is this passed as string for late evaluation?
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