Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/20531#discussion_r167718299
--- Diff: python/pyspark/sql/types.py ---
@@ -1638,6 +1638,8 @@ def to_arrow_type(dt):
# Timestamps should be in UTC, JVM Arrow timestamps require a
timezone to be read
arrow_type = pa.timestamp('us', tz='UTC')
elif type(dt) == ArrayType:
+ if type(dt.elementType) == TimestampType:
+ raise TypeError("Unsupported type in conversion to Arrow: " +
str(dt))
--- End diff --
What is the behavior before this PR?
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