HyukjinKwon commented on code in PR #44085:
URL: https://github.com/apache/spark/pull/44085#discussion_r1410067341
##########
python/pyspark/sql/datasource.py:
##########
@@ -145,6 +145,44 @@ def writer(self, schema: StructType, saveMode: str) ->
"DataSourceWriter":
raise NotImplementedError
+class InputPartition:
+ """
+ A base class representing an input partition returned by the `partitions()`
+ method of `DataSourceReader`.
+
+ .. versionadded: 4.0.0
+
+ Notes
+ -----
+ This class must be serializable.
Review Comment:
```suggestion
This class must be picklable.
```
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