jerryshao commented on code in PR #7354:
URL: https://github.com/apache/gravitino/pull/7354#discussion_r2141630535


##########
core/src/main/java/org/apache/gravitino/storage/relational/RelationalEntityStore.java:
##########
@@ -54,12 +61,28 @@ public class RelationalEntityStore
           Configs.DEFAULT_ENTITY_RELATIONAL_STORE, 
JDBCBackend.class.getCanonicalName());
   private RelationalBackend backend;
   private RelationalGarbageCollector garbageCollector;
+  private EntityCache cache;
+  private Set<Namespace> namespaceSet;
+  private boolean cacheEnabled;
+
+  /**
+   * Return whether the cache is enabled or not.
+   *
+   * @return {@code true} if cache is enable, otherwise {@code false}
+   */
+  public boolean cacheEnabled() {
+    return cacheEnabled;
+  }
 
   @Override
   public void initialize(Config config) throws RuntimeException {
     this.backend = createRelationalEntityBackend(config);
     this.garbageCollector = new RelationalGarbageCollector(backend, config);
     this.garbageCollector.start();
+    this.cacheEnabled = config.get(Configs.CACHE_ENABLED);
+    this.namespaceSet = Sets.newHashSet();

Review Comment:
   What is the usage of `namespaceSet`?



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