Github user mayunSaicmotor commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1193#discussion_r129566524
--- Diff:
examples/spark2/src/main/scala/org/apache/carbondata/examples/CarbonSortColumnsExample.scala
---
@@ -0,0 +1,126 @@
+/*
+ * 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.examples
+
+import java.io.File
+
+import org.apache.spark.sql.SparkSession
+
+import org.apache.carbondata.core.constants.CarbonCommonConstants
+import org.apache.carbondata.core.util.CarbonProperties
+
+object CarbonSortColumnsExample {
+
+ def main(args: Array[String]) {
+ val rootPath = new File(this.getClass.getResource("/").getPath
+ + "../../../..").getCanonicalPath
+ val storeLocation = s"$rootPath/examples/spark2/target/store"
+ val warehouse = s"$rootPath/examples/spark2/target/warehouse"
+ val metastoredb = s"$rootPath/examples/spark2/target"
+
+ CarbonProperties.getInstance()
+ .addProperty(CarbonCommonConstants.CARBON_TIMESTAMP_FORMAT,
"yyyy/MM/dd HH:mm:ss")
+ .addProperty(CarbonCommonConstants.CARBON_DATE_FORMAT, "yyyy/MM/dd")
+
.addProperty(CarbonCommonConstants.ENABLE_UNSAFE_COLUMN_PAGE_LOADING, "true")
+
+ import org.apache.spark.sql.CarbonSession._
+ val spark = SparkSession
+ .builder()
+ .master("local")
+ .appName("CarbonSortColumnsExample")
+ .config("spark.sql.warehouse.dir", warehouse)
+ .config("spark.driver.host", "localhost")
+ .getOrCreateCarbonSession(storeLocation, metastoredb)
+
+ spark.sparkContext.setLogLevel("WARN")
+
+ spark.sql("DROP TABLE IF EXISTS sort_columns_table")
+
+ // Create table with no sort columns
+ spark.sql(
+ s"""
+ | CREATE TABLE no_sort_columns_table(
+ | shortField SHORT,
+ | intField INT,
+ | bigintField LONG,
+ | doubleField DOUBLE,
+ | stringField STRING,
+ | timestampField TIMESTAMP,
+ | decimalField DECIMAL(18,2),
+ | dateField DATE,
+ | charField CHAR(5),
+ | floatField FLOAT,
+ | complexData ARRAY<STRING>
+ | )
+ | STORED BY 'carbondata'
+ | TBLPROPERTIES('SORT_COLUMNS'='')
+ """.stripMargin)
+
+ // Create table with sort columns
+ spark.sql(
+ s"""
+ | CREATE TABLE sort_columns_table(
+ | shortField SHORT,
+ | intField INT,
+ | bigintField LONG,
+ | doubleField DOUBLE,
+ | stringField STRING,
+ | timestampField TIMESTAMP,
+ | decimalField DECIMAL(18,2),
+ | dateField DATE,
+ | charField CHAR(5),
+ | floatField FLOAT,
+ | complexData ARRAY<STRING>
+ | )
+ | STORED BY 'carbondata'
+ | TBLPROPERTIES('SORT_COLUMNS'='intField, stringField, charField')
+ """.stripMargin)
+
+ val path = s"$rootPath/examples/spark2/src/main/resources/data.csv"
+
+ // scalastyle:off
+ spark.sql(
+ s"""
+ | LOAD DATA LOCAL INPATH '$path'
+ | INTO TABLE no_sort_columns_table
+ |
OPTIONS('FILEHEADER'='shortField,intField,bigintField,doubleField,stringField,timestampField,decimalField,dateField,charField,floatField,complexData',
+ | 'COMPLEX_DELIMITER_LEVEL_1'='#')
--- End diff --
added comments in line 74 and line 75
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