Github user felixcheung commented on the pull request:
https://github.com/apache/spark/pull/10201#issuecomment-164294560
@shivaram I checked but release notes and programming guide/migration guide
and I don't see referencing to withColumn for Spark 1.4.0 or 1.4.1. Perhaps the
behavior change happened before the 1.4.0 release?
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