Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/17819#discussion_r143707170
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/DataFrameSuite.scala
---
@@ -684,6 +684,34 @@ class DataFrameSuite extends QueryTest with
SharedSQLContext {
}
}
--- End diff --
I think as `withColumn` case, we can re-implement it with `withColumns` for
metadata too. So this test case can cover it.
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