Github user jackylk commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2106#discussion_r177418479
--- Diff:
core/src/main/java/org/apache/carbondata/core/datamap/status/DataMapStatusManager.java
---
@@ -0,0 +1,103 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.carbondata.core.datamap.status;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.carbondata.core.datamap.DataMapStoreManager;
+import org.apache.carbondata.core.metadata.schema.table.CarbonTable;
+import org.apache.carbondata.core.metadata.schema.table.DataMapSchema;
+
+/**
+ * Maintains the status of each datamap. As per the status query will
decide whether to hit datamap
+ * or not.
+ */
+public class DataMapStatusManager {
--- End diff --
If this class provide static function only, please add a private constructor
---
