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/*
* 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 org.apache.drill.categories.PlannerTest;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import java.nio.file.Paths;
@Category({PlannerTest.class})
public class TestDirScanToValuesConversion extends PlanTestBase {
private static final String TABLE_WITH_METADATA = "parquetTable1";
@BeforeClass
public static void setUp() {
dirTestWatcher.copyResourceToRoot(Paths.get("multilevel"));
dirTestWatcher.copyResourceToRoot(Paths.get("multilevel/parquet"), Paths.get(TABLE_WITH_METADATA));
}
@Test
public void testDirScanToValuesConversion() throws Exception {
String[] tableNames = {"multilevel/parquet", "multilevel/json", "multilevel/csv"};
String[] queries = {
"select distinct dir0, dir1 from dfs.`%s`",
"select dir0, dir1 from dfs.`%s` group by 1, 2"
};
for (String tableName : tableNames) {
for (String query : queries) {
testPlanMatchingPatterns(String.format(query, tableName), new String[]{"Values\\(tuples="}, new String[]{"Scan\\(table="});
}
}
}
@Test
public void testDirScanToValuesConversionWithMetadataCache() throws Exception {
test("refresh table metadata dfs.`%s`", TABLE_WITH_METADATA);
checkForMetadataFile(TABLE_WITH_METADATA);
String query = String.format("select distinct dir0, dir1 from dfs.`%s`", TABLE_WITH_METADATA);
PlanTestBase.testPlanMatchingPatterns(query, new String[]{"Values\\(tuples="}, null);
}
@Test
public void testDirScanToValuesConversionIsNotApplied() throws Exception {
String[] tableNames = {"multilevel/parquet", "multilevel/json", "multilevel/csv"};
String[] queries = {
"select dir0, dir1 from dfs.`%s`", // no aggregation
"select dir0, dir1, o_custkey from dfs.`%s` group by 1, 2, 3" // not only partition columns present
};
for (String tableName : tableNames) {
for (String query : queries) {
testPlanMatchingPatterns(String.format(query, tableName), new String[]{"Scan\\(table="}, new String[]{"Values\\(tuples="});
}
}
}
}
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