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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2018/12/13 01:03:31 UTC
[GitHub] HeartSaVioR edited a comment on issue #23285: [SPARK-26224][SQL]
Avoid creating many project on subsequent calls to withColumn
HeartSaVioR edited a comment on issue #23285: [SPARK-26224][SQL] Avoid creating many project on subsequent calls to withColumn
URL: https://github.com/apache/spark/pull/23285#issuecomment-446802963
IMHO, given that it's not easy to make chained `withColumn`s works like one projection, we might want to consider exposing `withColumns` to public. If chains are independent, they could be changed to one of `withColumns`, and even some chains depend on others, the depth of projection could be greatly reduced.
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