MaxGekk commented on code in PR #41072:
URL: https://github.com/apache/spark/pull/41072#discussion_r1195144058
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala:
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@@ -3448,13 +3449,32 @@ object Sequence {
|| (estimatedStep == num.zero && start == stop),
s"Illegal sequence boundaries: $start to $stop by $step")
- val len = if (start == stop) 1L else 1L + (stop.toLong - start.toLong) /
estimatedStep.toLong
-
- require(
- len <= MAX_ROUNDED_ARRAY_LENGTH,
- s"Too long sequence: $len. Should be <= $MAX_ROUNDED_ARRAY_LENGTH")
-
- len.toInt
+ try {
+ val delta = Math.subtractExact(stop.toLong, start.toLong)
+ if (delta == Long.MinValue && estimatedStep.toLong == -1L) {
+ // We must special-case division of Long.MinValue by -1 to catch
potential unchecked
+ // overflow in next operation. Division does not have a builtin
overflow check. We
+ // previously special-case div-by-zero.
+ throw new ArithmeticException("Long overflow (Long.MinValue / -1)")
+ }
+ val len = if (stop == start) 1L else Math.addExact(1L, (delta /
estimatedStep.toLong))
+ if (len > MAX_ROUNDED_ARRAY_LENGTH) {
+ throw new IllegalArgumentException(s"Too long sequence: $len. Should
be <= " +
Review Comment:
If the exception is an user-facing error, let's introduce an error class,
and raise a Spark exception w/ it.
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