Github user ravipesala commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2496#discussion_r202911491
--- Diff:
integration/spark2/src/main/scala/org/apache/spark/sql/optimizer/CarbonComplexTypeRule.scala
---
@@ -0,0 +1,96 @@
+/*
+ * 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.optimizer
+
+import scala.collection.mutable
+
+import org.apache.spark.sql.CarbonDatasourceHadoopRelation
+import org.apache.spark.sql.catalyst.expressions.{
+ Alias, Attribute, AttributeReference,
+ Expression, GetStructField, NamedExpression, PredicateHelper
+}
+import org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, Project}
+import org.apache.spark.sql.catalyst.rules.Rule
+import org.apache.spark.sql.execution.datasources.LogicalRelation
+
+/**
+ * Push down complex type attribute reference to CarbonDataRelation
+ */
+class CarbonComplexTypeRule extends Rule[LogicalPlan] with PredicateHelper
{
--- End diff --
Where did you add this rule? It is not yet wired?
---
