ashb commented on code in PR #22975:
URL: https://github.com/apache/airflow/pull/22975#discussion_r849653144
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airflow/models/mappedoperator.py:
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@@ -569,6 +573,7 @@ def _get_map_lengths(self, run_id: str, *, session:
Session) -> Dict[str, int]:
map_lengths[mapped_arg_name] += length
return map_lengths
+ @cache
def _resolve_map_lengths(self, run_id: str, *, session: Session) ->
Dict[str, int]:
Review Comment:
Session has a longer life time than you might expect due to SQLA's Pooling
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