Github user ueshin commented on a diff in the pull request: https://github.com/apache/spark/pull/19792#discussion_r153692220 --- Diff: python/pyspark/sql/types.py --- @@ -1108,19 +1109,23 @@ def _has_nulltype(dt): return isinstance(dt, NullType) -def _merge_type(a, b): +def _merge_type(a, b, path=''): --- End diff -- Well, can you follow the #18521 format for now? Thanks!
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