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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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package org.apache.tajo.engine.planner.physical;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.tajo.LocalTajoTestingUtility;
import org.apache.tajo.TajoTestingCluster;
import org.apache.tajo.algebra.Expr;
import org.apache.tajo.catalog.*;
import org.apache.tajo.catalog.proto.CatalogProtos.StoreType;
import org.apache.tajo.common.TajoDataTypes.Type;
import org.apache.tajo.conf.TajoConf;
import org.apache.tajo.datum.Datum;
import org.apache.tajo.datum.DatumFactory;
import org.apache.tajo.engine.parser.SQLAnalyzer;
import org.apache.tajo.engine.planner.*;
import org.apache.tajo.engine.planner.enforce.Enforcer;
import org.apache.tajo.engine.planner.logical.JoinNode;
import org.apache.tajo.engine.planner.logical.LogicalNode;
import org.apache.tajo.engine.planner.logical.NodeType;
import org.apache.tajo.storage.*;
import org.apache.tajo.storage.fragment.FileFragment;
import org.apache.tajo.util.CommonTestingUtil;
import org.apache.tajo.util.TUtil;
import org.apache.tajo.worker.TaskAttemptContext;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.io.IOException;
import static org.apache.tajo.ipc.TajoWorkerProtocol.JoinEnforce.JoinAlgorithm;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class TestMergeJoinExec {
private TajoConf conf;
private final String TEST_PATH = "target/test-data/TestMergeJoinExec";
private TajoTestingCluster util;
private CatalogService catalog;
private SQLAnalyzer analyzer;
private LogicalPlanner planner;
private AbstractStorageManager sm;
private TableDesc employee;
private TableDesc people;
@Before
public void setUp() throws Exception {
util = new TajoTestingCluster();
util.initTestDir();
catalog = util.startCatalogCluster().getCatalog();
Path testDir = CommonTestingUtil.getTestDir(TEST_PATH);
conf = util.getConfiguration();
FileSystem fs = testDir.getFileSystem(conf);
sm = StorageManagerFactory.getStorageManager(conf, testDir);
Schema employeeSchema = new Schema();
employeeSchema.addColumn("managerId", Type.INT4);
employeeSchema.addColumn("empId", Type.INT4);
employeeSchema.addColumn("memId", Type.INT4);
employeeSchema.addColumn("deptName", Type.TEXT);
TableMeta employeeMeta = CatalogUtil.newTableMeta(StoreType.CSV);
Path employeePath = new Path(testDir, "employee.csv");
Appender appender = StorageManagerFactory.getStorageManager(conf).getAppender(employeeMeta, employeeSchema,
employeePath);
appender.init();
Tuple tuple = new VTuple(employeeSchema.size());
for (int i = 0; i < 10; i++) {
tuple.put(new Datum[] { DatumFactory.createInt4(i),
DatumFactory.createInt4(i), DatumFactory.createInt4(10 + i),
DatumFactory.createText("dept_" + i) });
appender.addTuple(tuple);
}
for (int i = 11; i < 20; i+=2) {
tuple.put(new Datum[] { DatumFactory.createInt4(i),
DatumFactory.createInt4(i), DatumFactory.createInt4(10 + i),
DatumFactory.createText("dept_" + i) });
appender.addTuple(tuple);
}
appender.flush();
appender.close();
employee = CatalogUtil.newTableDesc("employee", employeeSchema, employeeMeta, employeePath);
catalog.addTable(employee);
Schema peopleSchema = new Schema();
peopleSchema.addColumn("empId", Type.INT4);
peopleSchema.addColumn("fk_memId", Type.INT4);
peopleSchema.addColumn("name", Type.TEXT);
peopleSchema.addColumn("age", Type.INT4);
TableMeta peopleMeta = CatalogUtil.newTableMeta(StoreType.CSV);
Path peoplePath = new Path(testDir, "people.csv");
appender = StorageManagerFactory.getStorageManager(conf).getAppender(peopleMeta, peopleSchema, peoplePath);
appender.init();
tuple = new VTuple(peopleSchema.size());
for (int i = 1; i < 10; i += 2) {
tuple.put(new Datum[] { DatumFactory.createInt4(i),
DatumFactory.createInt4(10 + i),
DatumFactory.createText("name_" + i),
DatumFactory.createInt4(30 + i) });
appender.addTuple(tuple);
}
for (int i = 10; i < 20; i++) {
tuple.put(new Datum[] { DatumFactory.createInt4(i),
DatumFactory.createInt4(10 + i),
DatumFactory.createText("name_" + i),
DatumFactory.createInt4(30 + i) });
appender.addTuple(tuple);
}
appender.flush();
appender.close();
people = CatalogUtil.newTableDesc("people", peopleSchema, peopleMeta, peoplePath);
catalog.addTable(people);
analyzer = new SQLAnalyzer();
planner = new LogicalPlanner(catalog);
}
@After
public void tearDown() throws Exception {
util.shutdownCatalogCluster();
}
String[] QUERIES = {
"select managerId, e.empId, deptName, e.memId from employee as e inner join " +
"people as p on e.empId = p.empId and e.memId = p.fk_memId"
};
@Test
public final void testMergeInnerJoin() throws IOException, PlanningException {
Expr expr = analyzer.parse(QUERIES[0]);
LogicalPlan plan = planner.createPlan(expr);
LogicalNode root = plan.getRootBlock().getRoot();
JoinNode joinNode = PlannerUtil.findTopNode(root, NodeType.JOIN);
Enforcer enforcer = new Enforcer();
enforcer.enforceJoinAlgorithm(joinNode.getPID(), JoinAlgorithm.MERGE_JOIN);
FileFragment[] empFrags = sm.splitNG(conf, "e", employee.getMeta(), employee.getPath(), Integer.MAX_VALUE);
FileFragment[] peopleFrags = sm.splitNG(conf, "p", people.getMeta(), people.getPath(), Integer.MAX_VALUE);
FileFragment[] merged = TUtil.concat(empFrags, peopleFrags);
Path workDir = CommonTestingUtil.getTestDir("target/test-data/testMergeInnerJoin");
TaskAttemptContext ctx = new TaskAttemptContext(conf,
LocalTajoTestingUtility.newQueryUnitAttemptId(), merged, workDir);
ctx.setEnforcer(enforcer);
PhysicalPlanner phyPlanner = new PhysicalPlannerImpl(conf,sm);
PhysicalExec exec = phyPlanner.createPlan(ctx, root);
ProjectionExec proj = (ProjectionExec) exec;
assertTrue(proj.getChild() instanceof MergeJoinExec);
Tuple tuple;
int count = 0;
int i = 1;
exec.init();
while ((tuple = exec.next()) != null) {
count++;
assertTrue(i == tuple.get(0).asInt4());
assertTrue(i == tuple.get(1).asInt4());
assertTrue(("dept_" + i).equals(tuple.get(2).asChars()));
assertTrue((10 + i) == tuple.get(3).asInt4());
i += 2;
}
exec.close();
assertEquals(10, count); // expected 10 * 5
}
}