phanikumv commented on code in PR #67716:
URL: https://github.com/apache/airflow/pull/67716#discussion_r3375131904
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airflow-core/docs/authoring-and-scheduling/assets.rst:
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@@ -565,6 +565,12 @@ downstream Dag partition key:
passes the key through unchanged if valid.
For example, ``AllowedKeyMapper(["us", "eu", "apac"])`` accepts only those
region keys and rejects all others.
+* ``FixedKeyMapper`` collapses every upstream key onto a fixed downstream key,
+ regardless of the upstream value.
+* ``SegmentWindow`` declares a fixed categorical set of string keys (e.g.
regions,
+ tenants) that constitute one downstream period; paired with
``FixedKeyMapper``
Review Comment:
Missing newsfragment. This adds new public SDK classes (`FixedKeyMapper`,
`SegmentWindow`. Its direct sibling
`FanOutMapper` (#66030) shipped
`airflow-core/newsfragments/66030.feature.rst`; worth adding 67716.feature.rst
to match.
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