zero323 commented on a change in pull request #35252:
URL: https://github.com/apache/spark/pull/35252#discussion_r789266875
##########
File path: python/pyspark/serializers.py
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@@ -100,6 +100,13 @@ def load_stream(self, stream):
"""
raise NotImplementedError
+ def dumps(self, obj):
+ """
+ Serialize an object into a byte array.
+ When batching is used, this will be called with an array of objects.
+ """
+ raise NotImplementedError
+
Review comment:
In `rdd.py` we assume that implementations have `dumps` method.
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