rangadi commented on code in PR #46125:
URL: https://github.com/apache/spark/pull/46125#discussion_r1572997060
##########
python/pyspark/sql/tests/connect/streaming/test_parity_foreach_batch.py:
##########
@@ -66,6 +66,30 @@ def func(df, _):
q = df.writeStream.foreachBatch(func).start()
q.processAllAvailable()
+ def test_pickling_deserialization_error(self):
+ class NoUnpickle:
+ def __init__(self, data):
+ self.data = data
+
+ def __reduce__(self):
+ # Serialize only the data attribute
+ return (self.__class__, (self.data,))
Review Comment:
I think here, you should return a function that throws.
```
def __reduce__(self):
reurn (error_fn, ())
def error_fn:
raise ...
```
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