Github user sraghunandan commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1865#discussion_r164322700
--- Diff:
integration/spark-common/src/main/java/org/apache/carbondata/spark/exception/UnsupportedDataMapException.java
---
@@ -0,0 +1,36 @@
+/*
+ * 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.spark.exception;
+
+import static
org.apache.carbondata.core.metadata.schema.table.DataMapClassName.PREAGGREGATE;
+import static
org.apache.carbondata.core.metadata.schema.table.DataMapClassName.TIMESERIES;
+
+/**
+ * Throw exception when using unsupported datamap type
+ */
+public class UnsupportedDataMapException extends
MalformedCarbonCommandException {
+ /**
+ * default serial version ID.
+ */
+ private static final long serialVersionUID = 1L;
+
+ public UnsupportedDataMapException(String dataMapType) {
+ super("Don't support using " + dataMapType +
--- End diff --
change the sentence as "Unknown data map type " + dataMaType.Please use one
of
---
