gengliangwang commented on a change in pull request #25461:
[SPARK-28741][SQL]Throw exceptions when casting to integers causes overflow
URL: https://github.com/apache/spark/pull/25461#discussion_r317005596
##########
File path: sql/catalyst/src/main/scala/org/apache/spark/sql/types/Decimal.scala
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@@ -232,12 +232,149 @@ final class Decimal extends Ordered[Decimal] with
Serializable {
}
}
+ /**
+ * @return the Long value that is equal to the rounded decimal.
+ * @throws ArithmeticException if checkOverflow is true and
+ * the decimal too big to fit in Long type.
+ */
+ def toLong(checkOverflow: Boolean): Long = {
Review comment:
Actually, I am not super comfortable with the code changes in Decimal.scala
here.
I did this to address comments in
https://github.com/apache/spark/pull/25461#discussion_r315177196 .
How about just adding a new method `roundToLong`. The name is same as
https://github.com/google/guava/blob/master/guava/src/com/google/common/math/DoubleMath.java#L156
. So that we can leave toLong as it is.
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