srowen commented on a change in pull request #29008:
URL: https://github.com/apache/spark/pull/29008#discussion_r450369033
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/RebaseDateTime.scala
##########
@@ -186,7 +186,7 @@ object RebaseDateTime {
.setTimeZone(TimeZoneUTC)
.setDate(localDate.getYear, localDate.getMonthValue - 1,
localDate.getDayOfMonth)
.build()
- Math.toIntExact(Math.floorDiv(utcCal.getTimeInMillis, MILLIS_PER_DAY))
+ Math.toIntExact(utcCal.getTimeInMillis, MILLIS_PER_DAY)
Review comment:
I guess I'd be surprised if the operations were meaningfully faster,
given how much else is happening. I'm sure a microbenchmark of a trillion calls
would show a difference, but that's not quite the use case.
Nevertheless are there other instances where both args are definitely
nonnegative?
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