maropu commented on a change in pull request #29085:
URL: https://github.com/apache/spark/pull/29085#discussion_r455676650
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala
##########
@@ -712,14 +713,10 @@ class SparkSqlAstBuilder(conf: SQLConf) extends
AstBuilder(conf) {
None
}
(Seq.empty, Option(name), props.toSeq, recordHandler)
-
+ // SPARK-32106: When there is no definition about format, we return
empty result
+ // then we finally execute with SparkScriptTransformationExec
Review comment:
How about rephrasing it like this?
```
// then we finally execute with SparkScriptTransformationExec
```
=>
```
// to use a built-in default Serde in SparkScriptTransformationExec.
```
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