uranusjr commented on code in PR #30641:
URL: https://github.com/apache/airflow/pull/30641#discussion_r1168001243
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airflow/models/xcom_arg.py:
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@@ -309,11 +310,19 @@ def zip(self, *others: XComArg, fillvalue: Any = NOTSET)
-> ZipXComArg:
return super().zip(*others, fillvalue=fillvalue)
def get_task_map_length(self, run_id: str, *, session: Session) -> int |
None:
+ from airflow.models.taskinstance import TaskInstance
from airflow.models.taskmap import TaskMap
from airflow.models.xcom import XCom
task = self.operator
if isinstance(task, MappedOperator):
+ state_query = session.query(TaskInstance.state).filter(
+ TaskInstance.dag_id == task.dag_id,
+ TaskInstance.run_id == run_id,
+ TaskInstance.task_id == task.task_id,
+ )
+ if any(state in State.unfinished for state, in state_query):
+ return None # Not all of the expanded tis are done yet.
Review Comment:
Tried that as well, still no luck.
It seems that NULL is actually special when used with IN, so we’ll need to
do some special handling. I’ll try figure out how to write that clause.
https://stackoverflow.com/questions/6362112/in-clause-with-null-or-is-null
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