cloud-fan commented on a change in pull request #29731:
URL: https://github.com/apache/spark/pull/29731#discussion_r487709672
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
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@@ -658,6 +658,41 @@ abstract class CastBase extends UnaryExpression with
TimeZoneAwareExpression wit
}
}
+ private[this] def stringToDecimal(str: UTF8String, decimalType:
DecimalType): Decimal = {
+ val bigDecimal = try {
+ // According the benchmark test, `s.toString.trim` is much faster than
`s.trim.toString`.
Review comment:
it sounds like `UTF8String.trim` is not implemented well. We may need to
look at how `java.lang.String.trim` is implemented.
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