javierivanov commented on a change in pull request #27498: [SPARK-30688][SQL] 
Week based dates not being parsed with TimestampFormatter
URL: https://github.com/apache/spark/pull/27498#discussion_r409253498
 
 

 ##########
 File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateFormatter.scala
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 @@ -93,7 +93,8 @@ class LegacySimpleDateFormatter(pattern: String, locale: 
Locale) extends LegacyD
 object DateFormatter {
   import LegacyDateFormats._
 
-  val defaultLocale: Locale = Locale.US
+  // Default locale should be obtained from JVM defaults.
+  val defaultLocale: Locale = Locale.getDefault
 
 Review comment:
   Locales affects week based dates. But since US is consider as a default, 
users should know that they have to specify that while computing timestamps or 
dates. 

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