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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.exec.store.hive.schema;
import com.google.common.collect.Lists;
import org.apache.drill.exec.store.hive.ColumnListsCache;
import org.apache.drill.categories.SlowTest;
import org.apache.hadoop.hive.metastore.api.FieldSchema;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import java.util.List;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
@Category({SlowTest.class})
public class TestColumnListCache {
@Test
public void testTableColumnsIndex() {
ColumnListsCache cache = new ColumnListsCache();
List<FieldSchema> columns = Lists.newArrayList();
columns.add(new FieldSchema("f1", "int", null));
columns.add(new FieldSchema("f2", "int", null));
assertEquals(0, cache.addOrGet(columns));
}
@Test
public void testPartitionColumnsIndex() {
ColumnListsCache cache = new ColumnListsCache();
List<FieldSchema> columns = Lists.newArrayList();
columns.add(new FieldSchema("f1", "int", null));
columns.add(new FieldSchema("f2", "int", null));
cache.addOrGet(columns);
columns.add(new FieldSchema("f3", "int", null));
assertEquals(1, cache.addOrGet(columns));
}
@Test
public void testColumnListUnique() {
ColumnListsCache cache = new ColumnListsCache();
List<FieldSchema> columns = Lists.newArrayList();
columns.add(new FieldSchema("f1", "int", null));
columns.add(new FieldSchema("f2", "int", null));
cache.addOrGet(columns);
cache.addOrGet(Lists.newArrayList(columns));
assertEquals(0, cache.addOrGet(Lists.newArrayList(columns)));
}
@Test
public void testPartitionColumnListAccess() {
ColumnListsCache cache = new ColumnListsCache();
List<FieldSchema> columns = Lists.newArrayList();
columns.add(new FieldSchema("f1", "int", null));
columns.add(new FieldSchema("f2", "int", null));
cache.addOrGet(columns);
cache.addOrGet(columns);
columns.add(new FieldSchema("f3", "int", null));
cache.addOrGet(columns);
cache.addOrGet(columns);
columns.add(new FieldSchema("f4", "int", null));
cache.addOrGet(columns);
cache.addOrGet(columns);
assertEquals(columns, cache.getColumns(2));
}
@Test
public void testPartitionColumnCaching() {
ColumnListsCache cache = new ColumnListsCache();
List<FieldSchema> columns = Lists.newArrayList();
columns.add(new FieldSchema("f1", "int", null));
columns.add(new FieldSchema("f2", "int", null));
// sum of all indexes from cache
int indexSum = cache.addOrGet(columns);
indexSum += cache.addOrGet(columns);
List<FieldSchema> sameColumns = Lists.newArrayList(columns);
indexSum += cache.addOrGet(sameColumns);
List<FieldSchema> otherColumns = Lists.newArrayList();
otherColumns.add(new FieldSchema("f3", "int", null));
otherColumns.add(new FieldSchema("f4", "int", null));
// sum of all indexes from cache
int secondIndexSum = cache.addOrGet(otherColumns);
secondIndexSum += cache.addOrGet(otherColumns);
List<FieldSchema> sameOtherColumns = Lists.newArrayList();
sameOtherColumns.add(new FieldSchema("f3", "int", null));
sameOtherColumns.add(new FieldSchema("f4", "int", null));
secondIndexSum += cache.addOrGet(sameOtherColumns);
secondIndexSum += cache.addOrGet(Lists.newArrayList(sameOtherColumns));
secondIndexSum += cache.addOrGet(otherColumns);
secondIndexSum += cache.addOrGet(otherColumns);
indexSum += cache.addOrGet(sameColumns);
indexSum += cache.addOrGet(columns);
// added only two kinds of column lists
assertNull(cache.getColumns(3));
// sum of the indices of the first column list
assertEquals(0, indexSum);
assertEquals(6, secondIndexSum);
}
}
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