HuangXingBo commented on a change in pull request #16611:
URL: https://github.com/apache/flink/pull/16611#discussion_r680829384
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File path: flink-python/pyflink/fn_execution/coder_impl_fast.pyx
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@@ -262,9 +263,10 @@ cdef class IterableCoderImpl(LengthPrefixBaseCoderImpl):
self._separated_with_end_message = separated_with_end_message
cpdef encode_to_stream(self, value, LengthPrefixOutputStream
output_stream):
- for item in value:
- self._field_coder.encode_to_stream(item, self._data_out_stream)
- self._write_data_to_output_stream(output_stream)
+ if value:
Review comment:
It is a hotfix for IterableCoderImpl when input value is a None after we
reconstructiing coders
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