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PHOENIX-4666 Persistent subquery cache for hash joins
Signed-off-by: Josh Elser <elserj@apache.org>
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phoenix-core/src/it/java/org/apache/phoenix/end2end/join/HashJoinPersistentCacheIT.java
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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.phoenix.end2end.join; | ||
|
|
||
| import static org.apache.phoenix.util.TestUtil.TEST_PROPERTIES; | ||
| import static org.junit.Assert.assertEquals; | ||
|
|
||
| import java.sql.Connection; | ||
| import java.sql.DriverManager; | ||
| import java.sql.ResultSet; | ||
| import java.util.Properties; | ||
|
|
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| import org.apache.phoenix.end2end.join.HashJoinCacheIT.InvalidateHashCache; | ||
| import org.apache.phoenix.util.PropertiesUtil; | ||
| import org.apache.phoenix.util.SchemaUtil; | ||
| import org.apache.phoenix.util.TestUtil; | ||
| import org.junit.Test; | ||
|
|
||
| public class HashJoinPersistentCacheIT extends BaseJoinIT { | ||
|
|
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| @Override | ||
| protected String getTableName(Connection conn, String virtualName) throws Exception { | ||
| String realName = super.getTableName(conn, virtualName); | ||
| TestUtil.addCoprocessor(conn, SchemaUtil.normalizeFullTableName(realName), | ||
| InvalidateHashCache.class); | ||
| return realName; | ||
| } | ||
|
|
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| @Test | ||
| public void testPersistentCache() throws Exception { | ||
| Properties props = PropertiesUtil.deepCopy(TEST_PROPERTIES); | ||
| Connection conn = DriverManager.getConnection(getUrl(), props); | ||
|
|
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| createTestTable(getUrl(), | ||
| "CREATE TABLE IF NOT EXISTS states (state CHAR(2) " + | ||
| "NOT NULL, name VARCHAR NOT NULL CONSTRAINT my_pk PRIMARY KEY (state, name))"); | ||
| createTestTable(getUrl(), | ||
| "CREATE TABLE IF NOT EXISTS cities (state CHAR(2) " + | ||
| "NOT NULL, city VARCHAR NOT NULL, population BIGINT " + | ||
| "CONSTRAINT my_pk PRIMARY KEY (state, city))"); | ||
|
|
||
| conn.prepareStatement( | ||
| "UPSERT INTO states VALUES ('CA', 'California')").executeUpdate(); | ||
| conn.prepareStatement( | ||
| "UPSERT INTO states VALUES ('AZ', 'Arizona')").executeUpdate(); | ||
| conn.prepareStatement( | ||
| "UPSERT INTO cities VALUES ('CA', 'San Francisco', 50000)").executeUpdate(); | ||
| conn.prepareStatement( | ||
| "UPSERT INTO cities VALUES ('CA', 'Sacramento', 3000)").executeUpdate(); | ||
| conn.prepareStatement( | ||
| "UPSERT INTO cities VALUES ('AZ', 'Phoenix', 20000)").executeUpdate(); | ||
| conn.commit(); | ||
|
|
||
| /* First, run query without using the persistent cache. This should return | ||
| * different results after an UPSERT takes place. | ||
| */ | ||
| ResultSet rs = conn.prepareStatement( | ||
| "SELECT SUM(population) FROM states s " | ||
| +"JOIN cities c ON c.state = s.state").executeQuery(); | ||
| rs.next(); | ||
| int population1 = rs.getInt(1); | ||
|
|
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| conn.prepareStatement("UPSERT INTO cities VALUES ('CA', 'Mt View', 1500)").executeUpdate(); | ||
| conn.commit(); | ||
| rs = conn.prepareStatement( | ||
| "SELECT SUM(population) FROM states s " + | ||
| "JOIN cities c ON c.state = s.state").executeQuery(); | ||
| rs.next(); | ||
| int population2 = rs.getInt(1); | ||
|
|
||
| assertEquals(73000, population1); | ||
| assertEquals(74500, population2); | ||
|
|
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| /* Second, run query using the persistent cache. This should return the | ||
| * same results after an UPSERT takes place. | ||
| */ | ||
| rs = conn.prepareStatement( | ||
| "SELECT /*+ USE_PERSISTENT_CACHE */ SUM(population) FROM states s " + | ||
| "JOIN cities c ON c.state = s.state").executeQuery(); | ||
| rs.next(); | ||
| int population3 = rs.getInt(1); | ||
|
|
||
| conn.prepareStatement( | ||
| "UPSERT INTO cities VALUES ('CA', 'Palo Alto', 2000)").executeUpdate(); | ||
| conn.commit(); | ||
|
|
||
| rs = conn.prepareStatement( | ||
| "SELECT /*+ USE_PERSISTENT_CACHE */ SUM(population) " + | ||
| "FROM states s JOIN cities c ON c.state = s.state").executeQuery(); | ||
| rs.next(); | ||
| int population4 = rs.getInt(1); | ||
| rs = conn.prepareStatement( | ||
| "SELECT SUM(population) FROM states s JOIN cities c ON c.state = s.state") | ||
| .executeQuery(); | ||
| rs.next(); | ||
| int population5 = rs.getInt(1); | ||
|
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| assertEquals(74500, population3); | ||
| assertEquals(74500, population4); | ||
| assertEquals(76500, population5); | ||
|
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| /* Let's make sure caches can be used across queries. We'll set up a | ||
| * cache, and make sure it is used on two different queries with the | ||
| * same subquery. | ||
| */ | ||
|
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| String sumQueryCached = "SELECT /*+ USE_PERSISTENT_CACHE */ SUM(population) " + | ||
| "FROM cities c JOIN (SELECT state FROM states WHERE state LIKE 'C%') sq " + | ||
| "ON sq.state = c.state"; | ||
| String distinctQueryCached = "SELECT /*+ USE_PERSISTENT_CACHE */ " + | ||
| "COUNT(DISTINCT(c.city)) FROM cities c " + | ||
| "JOIN (SELECT state FROM states WHERE state LIKE 'C%') sq " + | ||
| "ON sq.state = c.state"; | ||
| String sumQueryUncached = sumQueryCached.replace( | ||
| "/*+ USE_PERSISTENT_CACHE */", ""); | ||
| String distinctQueryUncached = distinctQueryCached.replace( | ||
| "/*+ USE_PERSISTENT_CACHE */", ""); | ||
|
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| rs = conn.prepareStatement(sumQueryCached).executeQuery(); | ||
| rs.next(); | ||
| int population6 = rs.getInt(1); | ||
| rs = conn.prepareStatement(distinctQueryCached).executeQuery(); | ||
| rs.next(); | ||
| int distinct1 = rs.getInt(1); | ||
| assertEquals(4, distinct1); | ||
|
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| // Add a new city that matches the queries. This should not affect results | ||
| // using persistent caching. | ||
| conn.prepareStatement("UPSERT INTO states VALUES ('CO', 'Colorado')").executeUpdate(); | ||
| conn.prepareStatement("UPSERT INTO cities VALUES ('CO', 'Denver', 6000)").executeUpdate(); | ||
| conn.commit(); | ||
|
|
||
| rs = conn.prepareStatement(sumQueryCached).executeQuery(); | ||
| rs.next(); | ||
| int population7 = rs.getInt(1); | ||
| assertEquals(population6, population7); | ||
| rs = conn.prepareStatement(distinctQueryCached).executeQuery(); | ||
| rs.next(); | ||
| int distinct2 = rs.getInt(1); | ||
| assertEquals(distinct1, distinct2); | ||
|
|
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| // Finally, make sure uncached queries give up to date results | ||
| rs = conn.prepareStatement(sumQueryUncached).executeQuery(); | ||
| rs.next(); | ||
| int population8 = rs.getInt(1); | ||
| assertEquals(population8, 62500); | ||
| rs = conn.prepareStatement(distinctQueryUncached).executeQuery(); | ||
| rs.next(); | ||
| int distinct3 = rs.getInt(1); | ||
| assertEquals(5, distinct3); | ||
| } | ||
| } |
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