Github user lgieron commented on a diff in the pull request:
https://github.com/apache/spark/pull/11396#discussion_r54350183
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala
---
@@ -992,6 +992,9 @@ case class FormatNumber(x: Expression, d: Expression)
val sb = classOf[StringBuffer].getName
val df = classOf[DecimalFormat].getName
+ val dfs = classOf[DecimalFormatSymbols].getName
+ val l = classOf[Locale].getName
+ val US = "US"
--- End diff --
I'll change it, it's no big deal. I think I'll also add a comment
explaining this slightly non-intuivite approach of hard-coding a specific
locale.
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