Spark: Avoid attempt to parsing partition path into different types i…

…f type inference is disabled

spark/src/main/scala/org/apache/spark/sql/delta/util/PartitionUtils.scala

@@ -528,7 +528,8 @@ private[delta] object PartitionUtils {
  timeZone: TimeZone,
  dateFormatter: DateFormatter,
  timestampFormatter: TimestampFormatter): Literal = {
- val decimalTry = Try {
+
+ def decimalTry = Try {
  // `BigDecimal` conversion can fail when the `field` is not a form of number.
  val bigDecimal = new JBigDecimal(raw)
  // It reduces the cases for decimals by disallowing values having scale (eg. `1.1`).
@@ -539,7 +540,7 @@ private[delta] object PartitionUtils {
  Literal(bigDecimal)
  }
 
- val dateTry = Try {
+ def dateTry = Try {
  // try and parse the date, if no exception occurs this is a candidate to be resolved as
  // DateType
  dateFormatter.parse(raw)
@@ -555,7 +556,7 @@ private[delta] object PartitionUtils {
  Literal.create(dateValue, DateType)
  }
 
- val timestampTry = Try {
+ def timestampTry = Try {
  val unescapedRaw = unescapePathName(raw)
  // try and parse the date, if no exception occurs this is a candidate to be resolved as
  // TimestampType