Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/19940#discussion_r158324941
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
---
@@ -1193,7 +1196,8 @@ case class ToUTCTimestamp(left: Expression, right:
Expression)
val dtu = DateTimeUtils.getClass.getName.stripSuffix("$")
val tzTerm = ctx.addMutableState(tzClass, "tz",
v => s"""$v = $dtu.getTimeZone("$tz");""")
- val utcTerm = ctx.addMutableState(tzClass, "utc",
+ val utcTerm = "tzUTC"
+ ctx.addImmutableStateIfNotExists(tzClass, utcTerm,
v => s"""$v = $dtu.getTimeZone("UTC");""")
--- End diff --
unrelated question: in the codebase sometimes we use UTC sometimes we use
GMT, is it corrected?
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