[GitHub] [spark] panbingkun commented on a diff in pull request #41724: [SPARK-44210][CONNECT][SQL][PYTHON] Strengthen type checking and better comply with Connect specifications for `levenshtein` function

["panbingkun (via GitHub)" <gi...@apache.org>]

panbingkun commented on code in PR #41724:
URL: https://github.com/apache/spark/pull/41724#discussion_r1251372289


##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala:
##########
@@ -2202,6 +2211,10 @@ case class Levenshtein(
     val thresholdEval = threshold.map(_.eval(input))
     thresholdEval match {
       case Some(v) =>
+        val vInt = v.asInstanceOf[Int]
+        if (vInt < 0) {
+          throw QueryExecutionErrors.invalidThresholdError(vInt)
+        }

Review Comment:
   Yes, 
   <img width="982" alt="b655f0bb7aff1a13776f5cddaf7e12cf" src="https://github.com/apache/spark/assets/15246973/6a9c521e-eeca-4927-bcef-3c1c740dddd0">
   



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