ueshin commented on a change in pull request #33634: URL: https://github.com/apache/spark/pull/33634#discussion_r682859453
########## File path: python/pyspark/pandas/indexes/base.py ########## @@ -2293,8 +2311,6 @@ def union( sdf_self = self._internal.spark_frame.select(self._internal.index_spark_columns) sdf_other = other_idx._internal.spark_frame.select(other_idx._internal.index_spark_columns) sdf = sdf_self.union(sdf_other.subtract(sdf_self)) Review comment: Could you try `sdf_self.unionAll(sdf_other).exceptAll(sdf_self.intersectAll(sdf_other))`? It seems working at least with the example above: ```py >>> ps_idx1 = ps.Index([1, 1, 1, 1, 1, 2, 2]) >>> ps_idx2 = ps.Index([1, 1, 2, 2, 2, 2, 2]) >>> ps_idx1.union(ps_idx2) Int64Index([1, 1, 1, 1, 1, 2, 2, 2, 2, 2], dtype='int64') >>> ps_idx1.to_pandas().union(ps_idx2.to_pandas()) Int64Index([1, 1, 1, 1, 1, 2, 2, 2, 2, 2], dtype='int64') ``` I haven't tried the other examples and I'm not sure how expensive this is, though. -- 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. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org