Repository: spark
Updated Branches:
refs/heads/branch-2.2 869af5bcb -> 815a0820b
[SPARK-21042][SQL] Document Dataset.union is resolution by position
## What changes were proposed in this pull request?
Document Dataset.union is resolution by position, not by name, since this has
been a
Repository: spark
Updated Branches:
refs/heads/master 571635488 -> b78e3849b
[SPARK-21042][SQL] Document Dataset.union is resolution by position
## What changes were proposed in this pull request?
Document Dataset.union is resolution by position, not by name, since this has
been a confusing