MaxGekk commented on a change in pull request #23878: [SPARK-26978][CORE] Avoid
magic time constants
URL: https://github.com/apache/spark/pull/23878#discussion_r259614470
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/GroupStateImpl.scala
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@@ -178,7 +179,7 @@ private[sql] class GroupStateImpl[S] private(
throw new IllegalArgumentException(s"Provided duration ($duration) is
not positive")
}
- val millisPerMonth = CalendarInterval.MICROS_PER_DAY / 1000 * 31
+ val millisPerMonth =
TimeUnit.MICROSECONDS.toMillis(CalendarInterval.MICROS_PER_DAY) * 31
Review comment:
Unfortunately, there is no `MONTHS.toMillis`.
> or just make the conversion in the next line directly?
It seems there is no way to perform the conversion directly because
conversion of milliseconds to "estimated" chrono units (starting from days) is
not supported in `java.time`
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