Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7605#discussion_r35353247
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/DecimalType.scala ---
@@ -36,7 +36,7 @@ case class PrecisionInfo(precision: Int, scale: Int) {
/**
* :: DeveloperApi ::
* The data type representing `java.math.BigDecimal` values.
- * A Decimal that might have fixed precision and scale, or unlimited
values for these.
+ * A Decimal that must have fixed precision and scale.
*
* Please use [[DataTypes.createDecimalType()]] to create a specific
instance.
*/
--- End diff --
after looking through the code - it definitely makes sense to just remove
the Option, and make precision/scale the two arguments on DecimalType.
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