1 files changed, 6 insertions, 0 deletions
diff --git a/common/network-common/src/main/java/org/apache/spark/network/util/MapConfigProvider.java b/common/network-common/src/main/java/org/apache/spark/network/util/MapConfigProvider.java
index 9cfee7f08d..a2cf87d1af 100644
--- a/common/network-common/src/main/java/org/apache/spark/network/util/MapConfigProvider.java
+++ b/common/network-common/src/main/java/org/apache/spark/network/util/MapConfigProvider.java
@@ -43,6 +43,12 @@ public class MapConfigProvider extends ConfigProvider {
   }
 
   @Override
+  public String get(String name, String defaultValue) {
+    String value = config.get(name);
+    return value == null ? defaultValue : value;
+  }
+
+  @Override
   public Iterable<Map.Entry<String, String>> getAll() {
     return config.entrySet();
   }