Lee-W commented on code in PR #67475:
URL: https://github.com/apache/airflow/pull/67475#discussion_r3380696542
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airflow-core/src/airflow/partition_mappers/window.py:
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@@ -106,6 +120,8 @@ class HourWindow(Window):
expected_decoded_type: ClassVar[type] = datetime
def to_upstream(self, period_start: datetime) -> Iterable[datetime]:
+ if self.direction is WindowDirection.BACKWARD:
+ period_start = period_start - timedelta(minutes=59)
return (period_start + timedelta(minutes=i) for i in range(60))
Review Comment:
extract it as `_build_directional_steps`
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