Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/4100#discussion_r121265430
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/CodeGenerator.scala
---
@@ -936,32 +936,42 @@ class CodeGenerator(
resultFieldNames: Seq[String])
: GeneratedExpression = {
// initial type check
+ //s"requested: $requestedTypeInfo; Actual: $fType")
if (returnType.getArity != fieldExprs.length) {
- throw new CodeGenException("Arity of result type does not match
number of expressions.")
+ throw new CodeGenException(
+ s"Arity[${returnType.getArity}] of result type[$returnType}] does
not match " +
--- End diff --
`type[$returnType}]` needs a `{` (or `}` should be removed)
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