dstandish commented on code in PR #69565:
URL: https://github.com/apache/airflow/pull/69565#discussion_r3539312737
##########
airflow-core/src/airflow/models/dagrun.py:
##########
@@ -2048,16 +2047,17 @@ def _revise_map_indexes_if_mapped(
)
session.flush()
+ new_tis: list[TI] = []
for index in range(total_length):
if index in existing_indexes:
continue
ti = TI(task, run_id=self.run_id, map_index=index, state=None,
dag_version_id=dag_version_id)
self.log.debug("Expanding TIs upserted %s", ti)
- task_instance_mutation_hook(ti, dag_run=self)
- ti = session.merge(ti)
- ti.refresh_from_task(task, dag_run=self)
+ _add_and_prime_mapped_ti(ti, task, self, session=session)
+ new_tis.append(ti)
Review Comment:
the reason why is if you look at 2058 -- it will not flush to the db unless
there are new tis
previously, it flushed on every ti -- which was more round trips IIUC
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