HyukjinKwon commented on code in PR #45023:
URL: https://github.com/apache/spark/pull/45023#discussion_r1517348253
##########
python/pyspark/sql/datasource.py:
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@@ -298,6 +320,133 @@ def read(self, partition: InputPartition) ->
Iterator[Union[Tuple, Row]]:
...
+class DataSourceStreamReader(ABC):
+ """
+ A base class for streaming data source readers. Data source stream readers
are responsible
+ for outputting data from a streaming data source.
+
+ .. versionadded: 4.0.0
+ """
+
+ def initialOffset(self) -> dict:
Review Comment:
IDE seems not catching this case. Things are runtime as Jungtaek said so
it'd be difficult to statically prevent.
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