Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/21928#discussion_r206401644
--- Diff: python/pyspark/serializers.py ---
@@ -236,6 +237,11 @@ def create_array(s, t):
# TODO: need decode before converting to Arrow in Python 2
return pa.Array.from_pandas(s.apply(
lambda v: v.decode("utf-8") if isinstance(v, str) else v),
mask=mask, type=t)
+ elif t is not None and pa.types.is_decimal(t) and \
+ LooseVersion("0.9.0") <= LooseVersion(pa.__version__) <
LooseVersion("0.10.0"):
--- End diff --
consider a single place to check pyarrow versions?
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