gerashegalov commented on code in PR #49503:
URL: https://github.com/apache/spark/pull/49503#discussion_r1917791020
##########
sql/connect/server/src/main/scala/org/apache/spark/sql/connect/ml/MLUtils.scala:
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@@ -228,39 +225,66 @@ private[ml] object MLUtils {
instance
}
+ /**
+ * Replace the operator with the value provided by the backend.
+ */
+ private def replaceOperator(sessionHolder: SessionHolder, name: String):
String = {
+ SparkConnectPluginRegistry
+ .mlBackendRegistry(sessionHolder.session.sessionState.conf)
+ .view
+ .map(p => p.transform(name))
+ .find(_.isPresent) // First come, first served
+ .getOrElse(Optional.of(name))
+ .get()
Review Comment:
nit: Could use `import scala.jdk.OptionConverters._`
```suggestion
.flatMap(p => p.transform(name).toScala)
.headOption // First come, first served
.getOrElse(name)
```
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