[GitHub] [flink] hequn8128 commented on a change in pull request #11342: [FLINK-16483][python] Add Python building blocks to make sure the basic functionality of vectorized Python UDF could work

[GitBox <gi...@apache.org>]

hequn8128 commented on a change in pull request #11342: [FLINK-16483][python] Add Python building blocks to make sure the basic functionality of vectorized Python UDF could work
URL: https://github.com/apache/flink/pull/11342#discussion_r389763484
 
 

 ##########
 File path: flink-python/pyflink/fn_execution/coder_impl.py
 ##########
 @@ -373,3 +376,45 @@ def internal_to_timestamp(self, milliseconds, nanoseconds):
         second, microsecond = (milliseconds // 1000,
                                milliseconds % 1000 * 1000 + nanoseconds // 1000)
         return datetime.datetime.utcfromtimestamp(second).replace(microsecond=microsecond)
+
+
+class ArrowCoderImpl(StreamCoderImpl):
+
+    def __init__(self, schema):
+        self._schema = schema
+        self._resettable_io = ResettableIO()
+
+    def encode_to_stream(self, cols, out_stream, nested):
+        if not hasattr(self, "_batch_writer"):
 
 Review comment:
   Why we must init the _batch_writer here instead of in `__init__`?

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services