Fixed a bug where the OpenAPI V3 spec was incorrect. The bug was intr…

…oduced in #10939. (#10974)

metadata-service/openapi-servlet/src/main/java/io/datahubproject/openapi/config/SpringWebConfig.java

@@ -16,6 +16,7 @@
 import io.swagger.v3.oas.models.Components;
 import io.swagger.v3.oas.models.OpenAPI;
 import java.util.Collections;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -150,6 +151,11 @@ private <K, V> Map<K, V> concat(Supplier<Map<K, V>> a, Supplier<Map<K, V>> b) {
  : b.get() == null
  ? a.get()
  : Stream.concat(a.get().entrySet().stream(), b.get().entrySet().stream())
- .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
+ .collect(
+ Collectors.toMap(
+ Map.Entry::getKey,
+ Map.Entry::getValue,
+ (v1, v2) -> v2,
+ LinkedHashMap::new));
  }
 }