lirui-apache commented on a change in pull request #14534:
URL: https://github.com/apache/flink/pull/14534#discussion_r551104540



##########
File path: 
flink-connectors/flink-connector-hive/src/test/java/org/apache/flink/table/catalog/hive/HiveCatalogGenericMetadataTest.java
##########
@@ -288,6 +293,45 @@ public void testTableSchemaCompatibility() throws 
Exception {
         }
     }
 
+    @Test
+    public void testFunctionCompatibility() throws Exception {
+        catalog.createDatabase(db1, createDb(), false);
+        catalog.createFunction(path1, new 
CatalogFunctionImpl("flink:class.name"), false);

Review comment:
       Yes. Prior to this PR, we add the `flink:` prefix for generic functions 
created in HiveCatalog. This test is to make sure such functions can still be 
properly retrieved after this change.




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