diff --git a/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/resource/unit/StorageUnitMetaData.java b/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/resource/unit/StorageUnitMetaData.java
index 0dfa7ce06c002..34ce3e90ef46e 100644
--- a/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/resource/unit/StorageUnitMetaData.java
+++ b/infra/common/src/main/java/org/apache/shardingsphere/infra/metadata/database/resource/unit/StorageUnitMetaData.java
@@ -35,7 +35,7 @@
 public final class StorageUnitMetaData {
     
     // TODO zhangliang: should refactor
-    private final Map<String, StorageNode> storageUnitNodeMap;
+    private final Map<String, StorageNode> storageNodes;
     
     private final Map<String, StorageUnit> storageUnits;
     
@@ -43,13 +43,13 @@ public final class StorageUnitMetaData {
     private final Map<String, DataSource> dataSources;
     
     public StorageUnitMetaData(final String databaseName, final Map<StorageNodeName, DataSource> storageNodeDataSources,
-                               final Map<String, DataSourcePoolProperties> dataSourcePoolPropertiesMap, final Map<String, StorageNode> storageUnitNodeMap) {
-        this.storageUnitNodeMap = storageUnitNodeMap;
-        storageUnits = new LinkedHashMap<>(this.storageUnitNodeMap.size(), 1F);
-        for (Entry<String, StorageNode> entry : this.storageUnitNodeMap.entrySet()) {
-            storageUnits.put(entry.getKey(), new StorageUnit(databaseName, storageNodeDataSources, dataSourcePoolPropertiesMap.get(entry.getKey()), entry.getValue()));
-        }
-        dataSources = createDataSources();
+                               final Map<String, DataSourcePoolProperties> dataSourcePoolPropertiesMap, final Map<String, StorageNode> storageNodes) {
+        this.storageNodes = storageNodes;
+        storageUnits = storageNodes.entrySet().stream().collect(
+                Collectors.toMap(Entry::getKey, entry -> new StorageUnit(databaseName, storageNodeDataSources, dataSourcePoolPropertiesMap.get(entry.getKey()), entry.getValue()),
+                        (oldValue, currentValue) -> currentValue, () -> new LinkedHashMap<>(this.storageNodes.size(), 1F)));
+        dataSources = storageUnits.entrySet().stream().collect(
+                Collectors.toMap(Entry::getKey, entry -> entry.getValue().getDataSource(), (oldValue, currentValue) -> currentValue, () -> new LinkedHashMap<>(storageUnits.size(), 1F)));
     }
     
     /**
@@ -61,12 +61,4 @@ public Map<String, DataSourcePoolProperties> getDataSourcePoolPropertiesMap() {
         return storageUnits.entrySet().stream()
                 .collect(Collectors.toMap(Entry::getKey, entry -> entry.getValue().getDataSourcePoolProperties(), (oldValue, currentValue) -> oldValue, LinkedHashMap::new));
     }
-    
-    private Map<String, DataSource> createDataSources() {
-        Map<String, DataSource> result = new LinkedHashMap<>(storageUnits.size(), 1F);
-        for (Entry<String, StorageUnit> entry : storageUnits.entrySet()) {
-            result.put(entry.getKey(), entry.getValue().getDataSource());
-        }
-        return result;
-    }
 }
diff --git a/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/context/ConfigurationContextManager.java b/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/context/ConfigurationContextManager.java
index 1de6e2f1164c6..2528f26dfc0ce 100644
--- a/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/context/ConfigurationContextManager.java
+++ b/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/context/ConfigurationContextManager.java
@@ -365,7 +365,7 @@ private DatabaseConfiguration getDatabaseConfiguration(final ResourceMetaData re
     
     private StorageResource getMergedStorageResource(final ResourceMetaData currentResourceMetaData, final SwitchingResource switchingResource) {
         Map<StorageNodeName, DataSource> storageNodeDataSources = currentResourceMetaData.getDataSources();
-        Map<String, StorageNode> storageUnitNodeMap = currentResourceMetaData.getStorageUnitMetaData().getStorageUnitNodeMap();
+        Map<String, StorageNode> storageUnitNodeMap = currentResourceMetaData.getStorageUnitMetaData().getStorageNodes();
         if (null != switchingResource && null != switchingResource.getNewStorageResource() && !switchingResource.getNewStorageResource().getDataSources().isEmpty()) {
             storageNodeDataSources.putAll(switchingResource.getNewStorageResource().getDataSources());
         }
diff --git a/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/switcher/NewResourceSwitchManager.java b/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/switcher/NewResourceSwitchManager.java
index 7c5fdeba9cdc0..c39f88e79667d 100644
--- a/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/switcher/NewResourceSwitchManager.java
+++ b/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/switcher/NewResourceSwitchManager.java
@@ -120,8 +120,8 @@ public SwitchingResource unregisterStorageUnit(final ResourceMetaData resourceMe
     }
     
     private StorageResource getToBeRemovedStaleStorageResource(final ResourceMetaData resourceMetaData, final String storageUnitName) {
-        StorageNode storageNode = resourceMetaData.getStorageUnitMetaData().getStorageUnitNodeMap().remove(storageUnitName);
-        Map<String, StorageNode> reservedStorageUintNodeMap = resourceMetaData.getStorageUnitMetaData().getStorageUnitNodeMap();
+        StorageNode storageNode = resourceMetaData.getStorageUnitMetaData().getStorageNodes().remove(storageUnitName);
+        Map<String, StorageNode> reservedStorageUintNodeMap = resourceMetaData.getStorageUnitMetaData().getStorageNodes();
         Map<StorageNodeName, DataSource> storageNodes = new LinkedHashMap<>(1, 1F);
         if (reservedStorageUintNodeMap.values().stream().noneMatch(each -> each.equals(storageNode))) {
             storageNodes.put(storageNode.getName(), resourceMetaData.getDataSources().get(storageNode.getName()));
diff --git a/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/switcher/ResourceSwitchManager.java b/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/switcher/ResourceSwitchManager.java
index a4006d5d0122f..8a0c7da949d34 100644
--- a/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/switcher/ResourceSwitchManager.java
+++ b/mode/core/src/main/java/org/apache/shardingsphere/mode/manager/switcher/ResourceSwitchManager.java
@@ -112,10 +112,10 @@ private Map<StorageNodeName, DataSource> getNewStorageNodes(final ResourceMetaDa
     }
     
     private Map<String, StorageNode> getNewStorageUnitNodeMap(final ResourceMetaData resourceMetaData, final Map<String, StorageNode> toBeChangedStorageUnitNodeMap) {
-        Map<String, StorageNode> result = new LinkedHashMap<>(resourceMetaData.getStorageUnitMetaData().getStorageUnitNodeMap());
+        Map<String, StorageNode> result = new LinkedHashMap<>(resourceMetaData.getStorageUnitMetaData().getStorageNodes());
         result.keySet().removeAll(getToBeDeletedStorageUnitNodeMap(resourceMetaData.getStorageUnitMetaData().getStorageUnits(), toBeChangedStorageUnitNodeMap.keySet()).keySet());
         result.putAll(getChangedStorageUnitNodeMap(resourceMetaData.getStorageUnitMetaData().getStorageUnits(), toBeChangedStorageUnitNodeMap));
-        result.putAll(getToBeAddedStorageUnitNodeMap(resourceMetaData.getStorageUnitMetaData().getStorageUnitNodeMap(), toBeChangedStorageUnitNodeMap));
+        result.putAll(getToBeAddedStorageUnitNodeMap(resourceMetaData.getStorageUnitMetaData().getStorageNodes(), toBeChangedStorageUnitNodeMap));
         return result;
     }
     
@@ -164,7 +164,7 @@ private StorageResource getToBeRemovedStaleDataSources(final ResourceMetaData re
     private StorageResource getStaleDataSources(final ResourceMetaData resourceMetaData, final Map<String, StorageNode> toBeChangedStorageUnitNodeMap,
                                                 final Map<String, DataSourcePoolProperties> storageUnitDataSourcePoolProps) {
         Map<StorageNodeName, DataSource> storageNodes = new LinkedHashMap<>(resourceMetaData.getDataSources().size(), 1F);
-        Map<String, StorageNode> storageUnitNodeMap = new LinkedHashMap<>(resourceMetaData.getStorageUnitMetaData().getStorageUnitNodeMap().size(), 1F);
+        Map<String, StorageNode> storageUnitNodeMap = new LinkedHashMap<>(resourceMetaData.getStorageUnitMetaData().getStorageNodes().size(), 1F);
         storageNodes.putAll(getToBeChangedDataSources(resourceMetaData.getDataSources(), StorageUnitNodeMapUtils.getStorageNodeDataSourcePoolProperties(storageUnitDataSourcePoolProps)));
         storageUnitNodeMap.putAll(getChangedStorageUnitNodeMap(resourceMetaData.getStorageUnitMetaData().getStorageUnits(), toBeChangedStorageUnitNodeMap));
         return new StorageResource(storageNodes, storageUnitNodeMap);
diff --git a/mode/core/src/test/java/org/apache/shardingsphere/mode/manager/ContextManagerTest.java b/mode/core/src/test/java/org/apache/shardingsphere/mode/manager/ContextManagerTest.java
index 2b099cd8d381c..1656a47c299e4 100644
--- a/mode/core/src/test/java/org/apache/shardingsphere/mode/manager/ContextManagerTest.java
+++ b/mode/core/src/test/java/org/apache/shardingsphere/mode/manager/ContextManagerTest.java
@@ -261,7 +261,7 @@ private ResourceMetaData createOriginalResource() {
             storageUnits.put(entry.getKey(), new StorageUnit("foo_db", storageNodeDataSourceMap, mock(DataSourcePoolProperties.class), entry.getValue()));
         }
         when(result.getStorageUnitMetaData().getStorageUnits()).thenReturn(storageUnits);
-        when(result.getStorageUnitMetaData().getStorageUnitNodeMap()).thenReturn(storageUnitNodeMap);
+        when(result.getStorageUnitMetaData().getStorageNodes()).thenReturn(storageUnitNodeMap);
         when(result.getDataSources()).thenReturn(storageNodeDataSourceMap);
         return result;
     }