Vamsi-klu commented on code in PR #71999:
URL: https://github.com/apache/airflow/pull/71999#discussion_r3845269092
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task-sdk/src/airflow/sdk/definitions/asset/metadata.py:
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@@ -31,8 +31,15 @@
@attrs.define(init=True)
class Metadata:
- """Metadata to attach to an AssetEvent."""
+ """
+ Metadata to attach to an AssetEvent.
+
+ ``extra`` is a JSON-serializable mapping merged onto the outlet event.
+ ``partition_key`` is an optional identity for partitioned consumers; it is
+ not inferred from ``extra``.
+ """
asset: Asset
extra: dict[str, JsonValue] = attrs.field(factory=dict)
alias: AssetAlias | None = None
+ partition_key: str | None = None
Review Comment:
A single key still works as `partition_keys="us"`.
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