Github user holdenk commented on a diff in the pull request:
https://github.com/apache/spark/pull/15821#discussion_r103047178
--- Diff: python/pyspark/serializers.py ---
@@ -182,6 +182,23 @@ def loads(self, obj):
raise NotImplementedError
+class ArrowSerializer(FramedSerializer):
+ """
+ Serializes an Arrow stream.
+ """
+
+ def dumps(self, obj):
+ raise NotImplementedError
+
+ def loads(self, obj):
+ from pyarrow import FileReader, BufferReader
--- End diff --
We should probably fail semi-gracefully if pyarrow isn't installed (e.g.
give an error message which tells people how to install it).
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