Github user ScrapCodes commented on a diff in the pull request:
https://github.com/apache/spark/pull/13839#discussion_r68036752
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala ---
@@ -251,7 +253,11 @@ class Dataset[T] private[sql](
case seq: Seq[_] => seq.mkString("[", ", ", "]")
case _ => cell.toString
}
- if (truncate && str.length > 20) str.substring(0, 17) + "..." else
str
+ if (truncateTo > 0 && str.length > truncateTo) {
+ // do not show ellipses for strings shorter than 4 characters.
+ if (truncateTo < 4) str.substring(0, truncateTo)
+ else str.substring(0, truncateTo - 3) + "..."
--- End diff --
I did not like this check, but added it to ensure we do not deviate from
the existing default behavior.
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