/**
* 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;
import static org.junit.Assert.assertEquals;
import org.apache.drill.common.util.TestTools;
import org.junit.Test;
public class TestAggNullable extends BaseTestQuery{
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(TestAggNullable.class);
static final String WORKING_PATH = TestTools.getWorkingPath();
static final String TEST_RES_PATH = WORKING_PATH + "/src/test/resources";
private static void enableAggr(boolean ha, boolean sa) throws Exception {
test(String.format("alter session set `planner.enable_hashagg` = %s", ha ? "true":"false"));
test(String.format("alter session set `planner.enable_streamagg` = %s", sa ? "true":"false"));
test("alter session set `planner.slice_target` = 1");
}
@Test // HashAgg on nullable columns
public void testHashAggNullableColumns() throws Exception {
String query1 = String.format("select t2.b2 from dfs_test.`%s/jsoninput/nullable2.json` t2 " +
" group by t2.b2", TEST_RES_PATH);
String query2 = String.format("select t2.a2, t2.b2 from dfs_test.`%s/jsoninput/nullable2.json` t2 " +
" group by t2.a2, t2.b2", TEST_RES_PATH);
int actualRecordCount;
int expectedRecordCount = 2;
enableAggr(true, false);
actualRecordCount = testSql(query1);
assertEquals(String.format("Received unexpected number of rows in output: expected=%d, received=%s",
expectedRecordCount, actualRecordCount), expectedRecordCount, actualRecordCount);
expectedRecordCount = 4;
actualRecordCount = testSql(query2);
assertEquals(String.format("Received unexpected number of rows in output: expected=%d, received=%s",
expectedRecordCount, actualRecordCount), expectedRecordCount, actualRecordCount);
}
@Test // StreamingAgg on nullable columns
public void testStreamAggNullableColumns() throws Exception {
String query1 = String.format("select t2.b2 from dfs_test.`%s/jsoninput/nullable2.json` t2 " +
" group by t2.b2", TEST_RES_PATH);
String query2 = String.format("select t2.a2, t2.b2 from dfs_test.`%s/jsoninput/nullable2.json` t2 " +
" group by t2.a2, t2.b2", TEST_RES_PATH);
int actualRecordCount;
int expectedRecordCount = 2;
enableAggr(false, true);
actualRecordCount = testSql(query1);
assertEquals(String.format("Received unexpected number of rows in output: expected=%d, received=%s",
expectedRecordCount, actualRecordCount), expectedRecordCount, actualRecordCount);
expectedRecordCount = 4;
actualRecordCount = testSql(query2);
assertEquals(String.format("Received unexpected number of rows in output: expected=%d, received=%s",
expectedRecordCount, actualRecordCount), expectedRecordCount, actualRecordCount);
}
}