Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/17527#discussion_r110394983
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/CaseInsensitiveMap.scala
---
@@ -26,11 +28,12 @@ package org.apache.spark.sql.catalyst.util
class CaseInsensitiveMap[T] private (val originalMap: Map[String, T])
extends Map[String, T]
with Serializable {
- val keyLowerCasedMap = originalMap.map(kv => kv.copy(_1 =
kv._1.toLowerCase))
+ val keyLowerCasedMap = originalMap.map(kv => kv.copy(_1 =
kv._1.toLowerCase(Locale.ROOT)))
--- End diff --
I am actually fine if you are fond of leaving it. I really think such cases
are inappropriate and hardly possible.
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