| /* |
| * 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.drill.exec; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| import org.apache.drill.categories.HiveStorageTest; |
| import org.apache.drill.exec.hive.HiveTestBase; |
| import org.apache.drill.exec.planner.physical.PlannerSettings; |
| import org.apache.drill.categories.SlowTest; |
| import org.junit.AfterClass; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category({SlowTest.class, HiveStorageTest.class}) |
| public class TestHiveProjectPushDown extends HiveTestBase { |
| |
| // enable decimal data type |
| @BeforeClass |
| public static void enableDecimalDataType() throws Exception { |
| test(String.format("alter session set `%s` = true", PlannerSettings.ENABLE_DECIMAL_DATA_TYPE_KEY)); |
| } |
| |
| @AfterClass |
| public static void disableDecimalDataType() throws Exception { |
| test(String.format("alter session set `%s` = false", PlannerSettings.ENABLE_DECIMAL_DATA_TYPE_KEY)); |
| } |
| |
| private void testHelper(String query, int expectedRecordCount, String... expectedSubstrs)throws Exception { |
| testPhysicalPlan(query, expectedSubstrs); |
| |
| int actualRecordCount = testSql(query); |
| assertEquals(String.format("Received unexpected number of rows in output: expected=%d, received=%s", |
| expectedRecordCount, actualRecordCount), expectedRecordCount, actualRecordCount); |
| } |
| |
| @Test |
| public void testSingleColumnProject() throws Exception { |
| String query = "SELECT `value` as v FROM hive.`default`.kv"; |
| String expectedColNames = " \"columns\" : [ \"`value`\" ]"; |
| |
| testHelper(query, 5, expectedColNames); |
| } |
| |
| @Test |
| public void testMultipleColumnsProject() throws Exception { |
| String query = "SELECT boolean_field as b_f, tinyint_field as ti_f FROM hive.`default`.readtest"; |
| String expectedColNames = " \"columns\" : [ \"`boolean_field`\", \"`tinyint_field`\" ]"; |
| |
| testHelper(query, 2, expectedColNames); |
| } |
| |
| @Test |
| public void testPartitionColumnProject() throws Exception { |
| String query = "SELECT double_part as dbl_p FROM hive.`default`.readtest"; |
| String expectedColNames = " \"columns\" : [ \"`double_part`\" ]"; |
| |
| testHelper(query, 2, expectedColNames); |
| } |
| |
| @Test |
| public void testMultiplePartitionColumnsProject() throws Exception { |
| String query = "SELECT double_part as dbl_p, decimal0_part as dec_p FROM hive.`default`.readtest"; |
| String expectedColNames = " \"columns\" : [ \"`double_part`\", \"`decimal0_part`\" ]"; |
| |
| testHelper(query, 2, expectedColNames); |
| } |
| |
| @Test |
| public void testPartitionAndRegularColumnProjectColumn() throws Exception { |
| String query = "SELECT boolean_field as b_f, tinyint_field as ti_f, " + |
| "double_part as dbl_p, decimal0_part as dec_p FROM hive.`default`.readtest"; |
| String expectedColNames = " \"columns\" : [ \"`boolean_field`\", \"`tinyint_field`\", " + |
| "\"`double_part`\", \"`decimal0_part`\" ]"; |
| |
| testHelper(query, 2, expectedColNames); |
| } |
| |
| @Test |
| public void testStarProject() throws Exception { |
| String query = "SELECT * FROM hive.`default`.kv"; |
| String expectedColNames = " \"columns\" : [ \"`key`\", \"`value`\" ]"; |
| |
| testHelper(query, 5, expectedColNames); |
| } |
| |
| @Test |
| public void testHiveCountStar() throws Exception { |
| String query = "SELECT count(*) as cnt FROM hive.`default`.kv"; |
| String expectedColNames = "\"columns\" : [ ]"; |
| |
| testHelper(query, 1, expectedColNames); |
| } |
| |
| } |