cloud-fan commented on code in PR #43720:
URL: https://github.com/apache/spark/pull/43720#discussion_r1386754391
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sql/core/src/main/scala/org/apache/spark/sql/internal/CatalogImpl.scala:
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@@ -284,6 +284,32 @@ class CatalogImpl(sparkSession: SparkSession) extends
Catalog {
CatalogImpl.makeDataset(functions.result(), sparkSession)
}
+ private def toFunctionIdent(functionName: String): Seq[String] = {
+ val parsed = parseIdent(functionName)
+ // For backward compatibility (Spark 3.3 and prior), we should check if
the function exists in
+ // the Hive Metastore first.
+ if (parsed.length <= 2 &&
+ !sessionCatalog.isTemporaryFunction(parsed.asFunctionIdentifier) &&
+ sessionCatalog.isPersistentFunction(parsed.asFunctionIdentifier)) {
+ qualifyV1Ident(parsed)
+ } else {
+ parsed
+ }
+ }
+
+ private def functionExists(nameParts: Seq[String]): Boolean = {
+ val plan = UnresolvedFunctionName(nameParts, "Catalog.functionExists",
false, None)
Review Comment:
do you mean `"Catalog.functionExists"`?
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