fix it

shuwenwei · shuwenwei · commit 0d0220840142 · 2025-08-29T14:50:26.000+08:00
diff --git a/iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/conf/ConfigurationFileUtils.java b/iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/conf/ConfigurationFileUtils.java
@@ -173,7 +173,7 @@ public static String getConfigurationDefaultValue(String parameterName) throws I
     }
     DefaultConfigurationItem defaultConfigurationItem =
         configuration2DefaultValue.get(parameterName);
-    return defaultConfigurationItem == null ? "" : defaultConfigurationItem.value;
+    return defaultConfigurationItem == null ? null : defaultConfigurationItem.value;
   }
 
   public static void releaseDefault() {

Original file line number	Diff line number	Diff line change
`@@ -173,7 +173,7 @@ public static String getConfigurationDefaultValue(String parameterName) throws I`
`173`	`173`	`}`
`174`	`174`	`DefaultConfigurationItem defaultConfigurationItem =`
`175`	`175`	`configuration2DefaultValue.get(parameterName);`
`176`		`- return defaultConfigurationItem == null ? "" : defaultConfigurationItem.value;`
	`176`	`+ return defaultConfigurationItem == null ? null : defaultConfigurationItem.value;`
`177`	`177`	`}`
`178`	`178`
`179`	`179`	`public static void releaseDefault() {`