Github user ravipesala commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/3026#discussion_r244090720
--- Diff:
integration/spark-datasource/src/main/spark2.1andspark2.2/org/apache/spark/sql/CarbonDictionaryUtil.java
---
@@ -0,0 +1,116 @@
+/*
+ * 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.spark.sql;
+
+import java.lang.reflect.Array;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+import org.apache.carbondata.core.scan.result.vector.CarbonDictionary;
+
+import org.apache.spark.sql.execution.vectorized.ColumnVector;
+
+/**
+ * This class uses the java reflection to create parquet dictionary class
as CDH distribution uses
+ * twitter parquet instead of apache parquet.
+ */
+public class CarbonDictionaryUtil {
--- End diff --
ok
---
