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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.pig.test;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import junit.framework.Assert;
import org.apache.pig.ExecType;
import org.apache.pig.PigException;
import org.apache.pig.PigServer;
import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher;
import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceOper;
import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.plans.MROperPlan;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.plans.PhysicalPlan;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POSplit;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POStore;
import org.apache.pig.backend.hadoop.executionengine.util.MapRedUtil;
import org.apache.pig.impl.PigContext;
import org.apache.pig.impl.io.FileLocalizer;
import org.apache.pig.impl.plan.Operator;
import org.apache.pig.impl.plan.OperatorPlan;
import org.apache.pig.impl.util.LogUtils;
import org.apache.pig.newplan.logical.relational.LogicalPlan;
import org.apache.pig.test.utils.SimpleCustomPartitioner;
import org.apache.pig.tools.grunt.GruntParser;
import org.apache.pig.tools.pigscript.parser.ParseException;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
@RunWith(JUnit4.class)
public class TestMultiQueryCompiler {
private static MiniCluster cluster;
private PigServer myPig;
@BeforeClass
public static void setUpBeforeClass() throws IOException {
cluster = MiniCluster.buildCluster();
Util.copyFromLocalToCluster(cluster,
"test/org/apache/pig/test/data/passwd", "passwd");
Util.copyFromLocalToCluster(cluster,
"test/org/apache/pig/test/data/passwd2", "passwd2");
}
@AfterClass
public static void tearDownAfterClass() throws IOException {
Util.deleteFile(cluster, "passwd");
Util.deleteFile(cluster, "passwd2");
cluster.shutDown();
}
@Before
public void setUp() throws Exception {
cluster.setProperty("opt.multiquery", ""+true);
myPig = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
deleteOutputFiles();
}
@After
public void tearDown() throws Exception {
myPig = null;
}
@Test
public void testMultiQueryJiraPig1438() {
// test case: merge multiple distinct jobs -- one group by job, one distinct job
String INPUT_FILE = "abc";
try {
myPig.setBatchOn();
myPig.registerQuery("A = load '" + INPUT_FILE + "' as (col1:int, col2:int, col3:int);");
myPig.registerQuery("B1 = foreach A generate col1, col2;");
myPig.registerQuery("B2 = foreach A generate col2, col3;");
myPig.registerQuery("C1 = distinct B1;");
myPig.registerQuery("C2 = group B2 by (col2, col3);");
myPig.registerQuery("D1 = foreach C1 generate col1, col2;");
myPig.registerQuery("D2 = foreach C2 generate B2.col2, B2.col3;");
myPig.registerQuery("store D1 into '/tmp/output1';");
myPig.registerQuery("store D2 into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(1, 2, 9);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 2, 15);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryJiraPig1060() {
// test case:
String INPUT_FILE = "pig-1060.txt";
try {
PrintWriter w = new PrintWriter(new FileWriter(INPUT_FILE));
w.println("apple\t2");
w.println("apple\t12");
w.println("orange\t3");
w.println("orange\t23");
w.println("strawberry\t10");
w.println("strawberry\t34");
w.close();
Util.copyFromLocalToCluster(cluster, INPUT_FILE, INPUT_FILE);
myPig.setBatchOn();
myPig.registerQuery("data = load '" + INPUT_FILE +
"' as (name:chararray, gid:int);");
myPig.registerQuery("f1 = filter data by gid < 5;");
myPig.registerQuery("g1 = group f1 by name;");
myPig.registerQuery("p1 = foreach g1 generate group, COUNT(f1.gid);");
myPig.registerQuery("store p1 into '/tmp/output1';");
myPig.registerQuery("f2 = filter data by gid > 5;");
myPig.registerQuery("g2 = group f2 by name;");
myPig.registerQuery("p2 = foreach g2 generate group, COUNT(f2.gid);");
myPig.registerQuery("store p2 into '/tmp/output2';");
myPig.registerQuery("f3 = filter f2 by gid > 10;");
myPig.registerQuery("g3 = group f3 by name;");
myPig.registerQuery("p3 = foreach g3 generate group, COUNT(f3.gid);");
myPig.registerQuery("store p3 into '/tmp/output3';");
myPig.registerQuery("f4 = filter f3 by gid < 20;");
myPig.registerQuery("g4 = group f4 by name;");
myPig.registerQuery("p4 = foreach g4 generate group, COUNT(f4.gid);");
myPig.registerQuery("store p4 into '/tmp/output4';");
LogicalPlan lp = checkLogicalPlan(1, 4, 17);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 4, 35);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
} finally {
new File(INPUT_FILE).delete();
try {
Util.deleteFile(cluster, INPUT_FILE);
} catch (IOException e) {
e.printStackTrace();
Assert.fail();
}
}
}
@Test
public void testMultiQueryJiraPig920() {
// test case: a simple diamond query
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid < 5;");
myPig.registerQuery("c = filter a by gid >= 5;");
myPig.registerQuery("d = cogroup c by $0, b by $0;");
myPig.registerQuery("e = foreach d generate group, COUNT(c), COUNT(b);");
myPig.registerQuery("store e into '/tmp/output1';");
LogicalPlan lp = checkLogicalPlan(1, 1, 6);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 1, 13);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryJiraPig920_1() {
// test case: a query with two diamonds
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid < 5;");
myPig.registerQuery("c = filter a by gid >= 5;");
myPig.registerQuery("d = filter a by uid >= 5;");
myPig.registerQuery("e = filter a by gid < 5;");
myPig.registerQuery("f = cogroup c by $0, b by $0;");
myPig.registerQuery("f1 = foreach f generate group, COUNT(c), COUNT(b);");
myPig.registerQuery("store f1 into '/tmp/output1';");
myPig.registerQuery("g = cogroup d by $0, e by $0;");
myPig.registerQuery("g1 = foreach g generate group, COUNT(d), COUNT(e);");
myPig.registerQuery("store g1 into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(1, 2, 11);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 2, 23);
checkMRPlan(pp, 2, 2, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithDemoCase() {
System.out.println("===== multi-query with demo case 2 =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = foreach a generate uname, uid, gid;");
myPig.registerQuery("c = filter b by uid < 5;");
myPig.registerQuery("d = filter c by gid >= 5;");
myPig.registerQuery("store d into '/tmp/output1';");
myPig.registerQuery("e = filter b by uid >= 5;");
myPig.registerQuery("store e into '/tmp/output2';");
myPig.registerQuery("f = filter c by gid < 5;");
myPig.registerQuery("g = group f by uname;");
myPig.registerQuery("h = foreach g generate group, COUNT(f.uid);");
myPig.registerQuery("store h into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 11);
// NOTE: old way seemingly generated a useless foreach operator. Now we have one less operator. Reason unknow.
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 19);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithSingleMapReduceSplittee() {
System.out.println("===== multi-query with single map reduce splittee =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname, passwd, uid, gid);");
myPig.registerQuery("b = foreach a generate uname, uid, gid;");
myPig.registerQuery("split b into c1 if uid > 5, c2 if uid <= 5 ;");
myPig.registerQuery("f = group c2 by uname;");
myPig.registerQuery("f1 = foreach f generate group, SUM(c2.gid);");
myPig.registerQuery("store f1 into '/tmp/output1';");
LogicalPlan lp = checkLogicalPlan(1, 1, 7);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 1, 9);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryPhase3BaseCase() {
System.out.println("===== multi-query phase 3 base case =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid < 5;");
myPig.registerQuery("c = filter a by uid >= 5 and uid < 10;");
myPig.registerQuery("d = filter a by uid >= 10;");
myPig.registerQuery("b1 = group b by gid;");
myPig.registerQuery("b2 = foreach b1 generate group, COUNT(b.uid);");
myPig.registerQuery("b3 = filter b2 by $1 > 5;");
myPig.registerQuery("store b3 into '/tmp/output1';");
myPig.registerQuery("c1 = group c by gid;");
myPig.registerQuery("c2 = foreach c1 generate group, SUM(c.uid);");
myPig.registerQuery("store c2 into '/tmp/output2';");
myPig.registerQuery("d1 = group d by gid;");
myPig.registerQuery("d2 = foreach d1 generate group, AVG(d.uid);");
myPig.registerQuery("store d2 into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 14);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 25);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryJiraPig983() {
System.out.println("===== multi-query Jira Pig-983 =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid < 5;");
myPig.registerQuery("c = filter a by uid >= 5;");
myPig.registerQuery("d = join b by uname, c by uname;");
myPig.registerQuery("e = group d by b::gid;");
myPig.registerQuery("e1 = foreach e generate group, COUNT(d.b::uid);");
myPig.registerQuery("store e1 into '/tmp/output1';");
myPig.registerQuery("f = group d by c::gid;");
myPig.registerQuery("f1 = foreach f generate group, SUM(d.c::uid);");
myPig.registerQuery("store f1 into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(1, 2, 10);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 2, 25);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryPhase3WithoutCombiner() {
System.out.println("===== multi-query phase 3 without combiner =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid < 5;");
myPig.registerQuery("c = filter a by uid >= 5 and uid < 10;");
myPig.registerQuery("d = filter a by uid >= 10;");
myPig.registerQuery("b1 = group b by gid;");
myPig.registerQuery("b2 = foreach b1 generate group, COUNT(b.uid) + SUM(b.uid);");
myPig.registerQuery("b3 = filter b2 by $1 > 5;");
myPig.registerQuery("store b3 into '/tmp/output1';");
myPig.registerQuery("c1 = group c by gid;");
myPig.registerQuery("c2 = foreach c1 generate group, SUM(c.uid) - COUNT(c.uid);");
myPig.registerQuery("store c2 into '/tmp/output2';");
myPig.registerQuery("d1 = group d by gid;");
myPig.registerQuery("d2 = foreach d1 generate group, MAX(d.uid) - MIN(d.uid);");
myPig.registerQuery("store d2 into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 14);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 25);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryPhase3WithMixedCombiner() {
System.out.println("===== multi-query phase 3 with mixed combiner =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid < 5;");
myPig.registerQuery("c = filter a by uid >= 5 and uid < 10;");
myPig.registerQuery("d = filter a by uid >= 10;");
myPig.registerQuery("b1 = group b by gid;");
myPig.registerQuery("b2 = foreach b1 generate group, COUNT(b.uid);");
myPig.registerQuery("b3 = filter b2 by $1 > 5;");
myPig.registerQuery("store b3 into '/tmp/output1';");
myPig.registerQuery("c1 = group c by gid;");
myPig.registerQuery("c2 = foreach c1 generate group, SUM(c.uid);");
myPig.registerQuery("store c2 into '/tmp/output2';");
myPig.registerQuery("d1 = group d by gid;");
myPig.registerQuery("d2 = foreach d1 generate group, d.uname, MAX(d.uid) - MIN(d.uid);");
myPig.registerQuery("store d2 into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 14);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 25);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryPhase3WithDifferentMapDataTypes() {
System.out.println("===== multi-query phase 3 with different map datatypes =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid < 5;");
myPig.registerQuery("c = filter a by uid >= 5 and uid < 10;");
myPig.registerQuery("d = filter a by uid >= 10;");
myPig.registerQuery("b1 = group b by gid parallel 2;");
myPig.registerQuery("b2 = foreach b1 generate group, COUNT(b.uid);");
myPig.registerQuery("b3 = filter b2 by $1 > 5;");
myPig.registerQuery("store b3 into '/tmp/output1';");
myPig.registerQuery("c1 = group c by $1 parallel 3;");
myPig.registerQuery("c2 = foreach c1 generate group, SUM(c.uid);");
myPig.registerQuery("store c2 into '/tmp/output2';");
myPig.registerQuery("d1 = group d by $1 parallel 4;");
myPig.registerQuery("d2 = foreach d1 generate group, COUNT(d.uid);");
myPig.registerQuery("store d2 into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 14);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 25);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryPhase3StreamingInReducer() {
System.out.println("===== multi-query phase 3 with streaming in reducer =====");
try {
myPig.setBatchOn();
myPig.registerQuery("A = load 'passwd';");
myPig.registerQuery("Split A into A1 if $2 > 5, A2 if $2 >= 5;");
myPig.registerQuery("Split A1 into A3 if $0 > 'm', A4 if $0 >= 'm';");
myPig.registerQuery("B = group A3 by $2;");
myPig.registerQuery("C = foreach B generate flatten(A3);");
myPig.registerQuery("D = stream B through `cat`;");
myPig.registerQuery("store D into '/tmp/output1';");
myPig.registerQuery("E = group A4 by $2;");
myPig.registerQuery("F = foreach E generate group, COUNT(A4);");
myPig.registerQuery("store F into '/tmp/output2';");
myPig.registerQuery("G = group A1 by $2;");
myPig.registerQuery("H = foreach G generate group, COUNT(A1);");
myPig.registerQuery("store H into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 15);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 24);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithPigMixL12() {
System.out.println("===== multi-query with PigMix L12 =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname, passwd, uid, gid);");
myPig.registerQuery("b = foreach a generate uname, passwd, uid, gid;");
myPig.registerQuery("split b into c1 if uid > 5, c2 if uid <= 5 ;");
myPig.registerQuery("split c1 into d1 if gid < 5, d2 if gid >= 5;");
myPig.registerQuery("e = group d1 by uname;");
myPig.registerQuery("e1 = foreach e generate group, MAX(d1.uid);");
myPig.registerQuery("store e1 into '/tmp/output1';");
myPig.registerQuery("f = group c2 by uname;");
myPig.registerQuery("f1 = foreach f generate group, SUM(c2.gid);");
myPig.registerQuery("store f1 into '/tmp/output2';");
myPig.registerQuery("g = group d2 by uname;");
myPig.registerQuery("g1 = foreach g generate group, COUNT(d2);");
myPig.registerQuery("store g1 into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 17);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 23);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithCoGroup() {
System.out.println("===== multi-query with CoGroup =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname, passwd, uid, gid);");
myPig.registerQuery("store a into '/tmp/output1' using BinStorage();");
myPig.registerQuery("b = load '/tmp/output1' using BinStorage() as (uname, passwd, uid, gid);");
myPig.registerQuery("c = load 'passwd2' " +
"using PigStorage(':') as (uname, passwd, uid, gid);");
myPig.registerQuery("d = cogroup b by (uname, uid) inner, c by (uname, uid) inner;");
myPig.registerQuery("e = foreach d generate flatten(b), flatten(c);");
myPig.registerQuery("store e into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(2, 1, 7);
PhysicalPlan pp = checkPhysicalPlan(lp, 2, 1, 13);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithFJ() {
System.out.println("===== multi-query with FJ =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("c = filter a by uid > 5;");
myPig.registerQuery("store c into '/tmp/output1';");
myPig.registerQuery("d = filter b by gid > 10;");
myPig.registerQuery("store d into '/tmp/output2';");
myPig.registerQuery("e = join c by gid, d by gid using 'repl';");
myPig.registerQuery("store e into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(2, 3, 8);
PhysicalPlan pp = checkPhysicalPlan(lp, 2, 3, 16);
checkMRPlan(pp, 2, 1, 3);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithExplicitSplitAndSideFiles() {
System.out.println("===== multi-query with explicit split and side files =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("split a into b if uid > 500, c if uid <= 500;");
myPig.registerQuery("store b into '/tmp/output1';");
myPig.registerQuery("store c into '/tmp/output2';");
myPig.registerQuery("e = cogroup b by gid, c by gid;");
myPig.registerQuery("d = foreach e generate flatten(c), flatten(b);");
myPig.registerQuery("store d into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 9);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 19);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithExplicitSplitAndOrderByAndSideFiles() {
System.out.println("===== multi-query with explicit split, orderby and side files =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("split a into a1 if uid > 500, a2 if gid > 500;");
myPig.registerQuery("b1 = distinct a1;");
myPig.registerQuery("b2 = order a2 by uname;");
myPig.registerQuery("store b1 into '/tmp/output1';");
myPig.registerQuery("store b2 into '/tmp/output2';");
myPig.registerQuery("c = cogroup b1 by uname, b2 by uname;");
myPig.registerQuery("d = foreach c generate flatten(group), flatten($1), flatten($2);");
myPig.registerQuery("store d into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 11);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 21);
checkMRPlan(pp, 1, 1, 4);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithIntermediateStores() {
System.out.println("===== multi-query with intermediate stores =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("store a into '/tmp/output1';");
myPig.registerQuery("b = load '/tmp/output1' using PigStorage(':'); ");
myPig.registerQuery("store b into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(1, 1, 4);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 1, 5);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithImplicitSplitAndSideFiles() {
System.out.println("===== multi-query with implicit split and side files =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid > 500;");
myPig.registerQuery("c = filter a by gid > 500;");
myPig.registerQuery("store c into '/tmp/output1';");
myPig.registerQuery("d = cogroup b by uname, c by uname;");
myPig.registerQuery("e = foreach d generate flatten(c), flatten(b);");
myPig.registerQuery("store e into '/tmp/output2';");
myPig.registerQuery("f = filter e by b::uid < 1000;");
myPig.registerQuery("store f into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 9);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 22);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithTwoLoadsAndTwoStores() {
System.out.println("===== multi-query with two loads and two stores =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);");
myPig.registerQuery("b = load 'passwd2' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);");
myPig.registerQuery("c = filter a by uid > 5;");
myPig.registerQuery("d = filter b by uid > 10;");
myPig.registerQuery("e = cogroup c by uid, d by uid;");
myPig.registerQuery("f = foreach e generate flatten(c), flatten(d);");
myPig.registerQuery("g = group f by d::gid;");
myPig.registerQuery("h = filter f by c::gid > 5;");
myPig.registerQuery("store g into '/tmp/output1';");
myPig.registerQuery("store h into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(2, 2, 10);
PhysicalPlan pp = checkPhysicalPlan(lp, 2, 2, 20);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithSplitInReduce() {
System.out.println("===== multi-query with split in reduce =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid > 5;");
myPig.registerQuery("c = group b by gid;");
myPig.registerQuery("d = foreach c generate group, COUNT(b.uid);");
myPig.registerQuery("store d into '/tmp/output1';");
myPig.registerQuery("e = filter d by $1 > 5;");
myPig.registerQuery("store e into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(1, 2, 7);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 2, 13);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithSplitInReduceAndReduceSplitee() {
System.out.println("===== multi-query with split in reduce and reduce splitee =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid > 5;");
myPig.registerQuery("c = group b by gid;");
myPig.registerQuery("d = foreach c generate group, COUNT(b.uid);");
myPig.registerQuery("store d into '/tmp/output1';");
myPig.registerQuery("e = filter d by $1 > 5;");
myPig.registerQuery("f = group e by $1;");
myPig.registerQuery("g = foreach f generate group, SUM(e.$0);");
myPig.registerQuery("store g into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(1, 2, 9);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 2, 17);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithSplitInReduceAndReduceSplitees() {
System.out.println("===== multi-query with split in reduce and reduce splitees =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid > 5;");
myPig.registerQuery("c = group b by gid;");
myPig.registerQuery("d = foreach c generate group, COUNT(b.uid);");
myPig.registerQuery("e = filter d by $1 > 5;");
myPig.registerQuery("e1 = group e by $1;");
myPig.registerQuery("e2 = foreach e1 generate group, SUM(e.$0);");
myPig.registerQuery("store e2 into '/tmp/output1';");
myPig.registerQuery("f = filter d by $1 < 5;");
myPig.registerQuery("f1 = group f by $1;");
myPig.registerQuery("f2 = foreach f1 generate group, COUNT(f.$0);");
myPig.registerQuery("store f2 into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(1, 2, 12);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 2, 22);
checkMRPlan(pp, 1, 1, 2);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithSplitInReduceAndReduceSpliteesAndMore() {
System.out.println("===== multi-query with split in reduce and reduce splitees and more =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid > 500;");
myPig.registerQuery("c = group b by gid;");
myPig.registerQuery("d = foreach c generate group, COUNT(b.uid);");
myPig.registerQuery("e = filter d by $1 > 5;");
myPig.registerQuery("e1 = group e by $1;");
myPig.registerQuery("e2 = foreach e1 generate group, SUM(e.$0);");
myPig.registerQuery("e3 = filter e2 by $1 > 10;");
myPig.registerQuery("e4 = group e3 by $1;");
myPig.registerQuery("e5 = foreach e4 generate group, SUM(e3.$0);");
myPig.registerQuery("store e5 into '/tmp/output1';");
myPig.registerQuery("f = filter d by $1 < 5;");
myPig.registerQuery("f1 = group f by $1;");
myPig.registerQuery("f2 = foreach f1 generate group, COUNT(f.$0);");
myPig.registerQuery("f3 = filter f2 by $1 < 100;");
myPig.registerQuery("f4 = group f3 by $1;");
myPig.registerQuery("f5 = foreach f4 generate group, COUNT(f3.$0);");
myPig.registerQuery("store f5 into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(1, 2, 18);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 2, 32);
checkMRPlan(pp, 1, 2, 4);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithSplitInMapAndReduceSplitees() {
System.out.println("===== multi-query with split in map and reduce splitees =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("b = filter a by uid < 5;");
myPig.registerQuery("c = filter a by uid >= 5 and uid < 10;");
myPig.registerQuery("d = filter a by uid >= 10;");
myPig.registerQuery("b1 = group b by gid;");
myPig.registerQuery("b2 = foreach b1 generate group, COUNT(b.uid);");
myPig.registerQuery("b3 = filter b2 by $1 > 5;");
myPig.registerQuery("store b3 into '/tmp/output1';");
myPig.registerQuery("c1 = group c by $1;");
myPig.registerQuery("c2 = foreach c1 generate group, SUM(c.uid);");
myPig.registerQuery("store c2 into '/tmp/output2';");
myPig.registerQuery("d1 = group d by $1;");
myPig.registerQuery("d2 = foreach d1 generate group, COUNT(d.uid);");
myPig.registerQuery("store d2 into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 14);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 25);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithTwoStores() {
System.out.println("===== multi-query with 2 stores =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);");
myPig.registerQuery("b = filter a by uid > 5;");
myPig.registerQuery("store b into '/tmp/output1';");
myPig.registerQuery("c = group b by gid;");
myPig.registerQuery("store c into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(1, 2, 5);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 2, 11);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithThreeStores() {
System.out.println("===== multi-query with 3 stores =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);");
myPig.registerQuery("b = filter a by uid > 5;");
myPig.registerQuery("store b into '/tmp/output1';");
myPig.registerQuery("c = filter b by uid > 10;");
myPig.registerQuery("store c into '/tmp/output2';");
myPig.registerQuery("d = filter c by uid > 15;");
myPig.registerQuery("store d into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 7);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 14);
checkMRPlan(pp, 1, 1, 1);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithTwoLoads() {
System.out.println("===== multi-query with two loads =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);");
myPig.registerQuery("b = load 'passwd2' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);");
myPig.registerQuery("c = filter a by uid > 5;");
myPig.registerQuery("d = filter b by uid > 10;");
myPig.registerQuery("store c into '/tmp/output1';");
myPig.registerQuery("store d into '/tmp/output2';");
myPig.registerQuery("e = cogroup c by uid, d by uid;");
myPig.registerQuery("store e into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(2, 3, 8);
PhysicalPlan pp = checkPhysicalPlan(lp, 2, 3, 19);
checkMRPlan(pp, 2, 1, 3);
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testStoreOrder() {
System.out.println("===== multi-query store order =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd';");
myPig.registerQuery("store a into '/tmp/output1' using BinStorage();");
myPig.registerQuery("a = load '/tmp/output1';");
myPig.registerQuery("store a into '/tmp/output2';");
myPig.registerQuery("a = load '/tmp/output1';");
myPig.registerQuery("store a into '/tmp/output3';");
myPig.registerQuery("a = load '/tmp/output2' using BinStorage();");
myPig.registerQuery("store a into '/tmp/output4';");
myPig.registerQuery("a = load '/tmp/output2';");
myPig.registerQuery("b = load '/tmp/output1';");
myPig.registerQuery("c = cogroup a by $0, b by $0;");
myPig.registerQuery("store c into '/tmp/output5';");
LogicalPlan lp = checkLogicalPlan(1, 3, 12);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 15);
MROperPlan mp = checkMRPlan(pp, 1, 3, 5);
myPig.executeBatch();
myPig.discardBatch();
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output1"));
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output2"));
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output3"));
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output4"));
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output5"));
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testUnnecessaryStoreRemoval() {
System.out.println("===== multi-query unnecessary stores =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);");
myPig.registerQuery("b = group a by uname;");
myPig.registerQuery("store b into '/tmp/output1';");
myPig.registerQuery("store b into '/tmp/output2';");
myPig.registerQuery("c = load '/tmp/output1';");
myPig.registerQuery("d = group c by $0;");
myPig.registerQuery("e = store d into '/tmp/output3';");
myPig.registerQuery("f = load '/tmp/output2';");
myPig.registerQuery("g = group f by $0;");
myPig.registerQuery("store g into '/tmp/output4';");
LogicalPlan lp = checkLogicalPlan(1, 2, 10);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 2, 20);
MROperPlan mp = checkMRPlan(pp, 1, 2, 3);
MapReduceOper mo1 = mp.getRoots().get(0);
MapReduceOper mo2 = mp.getLeaves().get(0);
MapReduceOper mo3 = mp.getLeaves().get(1);
checkPhysicalPlan(mo1.mapPlan, 1, 1, 3);
checkPhysicalPlan(mo1.reducePlan, 1, 1, 2);
PhysicalOperator leaf = mo1.reducePlan.getLeaves().get(0);
Assert.assertTrue(leaf instanceof POSplit);
POSplit split = (POSplit)leaf;
int i = 0;
for (PhysicalPlan p: split.getPlans()) {
checkPhysicalPlan(p, 1, 1, 1);
++i;
}
Assert.assertEquals(i,2);
checkPhysicalPlan(mo2.mapPlan, 1, 1, 2);
checkPhysicalPlan(mo2.reducePlan, 1, 1, 2);
leaf = mo2.reducePlan.getLeaves().get(0);
Assert.assertTrue(leaf instanceof POStore);
checkPhysicalPlan(mo3.mapPlan, 1, 1, 2);
checkPhysicalPlan(mo3.reducePlan, 1, 1, 2);
leaf = mo3.reducePlan.getLeaves().get(0);
Assert.assertTrue(leaf instanceof POStore);
myPig.executeBatch();
myPig.discardBatch();
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output1"));
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output2"));
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output3"));
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output4"));
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testUnnecessaryStoreRemovalCollapseSplit() {
System.out.println("===== multi-query unnecessary stores collapse split =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);");
myPig.registerQuery("b = group a by uname;");
myPig.registerQuery("store b into '/tmp/output1';");
myPig.registerQuery("c = load '/tmp/output1';");
myPig.registerQuery("d = group c by $0;");
myPig.registerQuery("e = store d into '/tmp/output2';");
LogicalPlan lp = checkLogicalPlan(1, 1, 6);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 1, 11);
MROperPlan mp = checkMRPlan(pp, 1, 1, 2);
MapReduceOper mo1 = mp.getRoots().get(0);
MapReduceOper mo2 = mp.getLeaves().get(0);
checkPhysicalPlan(mo1.mapPlan, 1, 1, 3);
checkPhysicalPlan(mo1.reducePlan, 1, 1, 2);
PhysicalOperator leaf = mo1.reducePlan.getLeaves().get(0);
Assert.assertTrue(leaf instanceof POStore);
checkPhysicalPlan(mo2.mapPlan, 1, 1, 2);
checkPhysicalPlan(mo2.reducePlan, 1, 1, 2);
leaf = mo2.reducePlan.getLeaves().get(0);
Assert.assertTrue(leaf instanceof POStore);
myPig.executeBatch();
myPig.discardBatch();
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output1"));
Assert.assertTrue(myPig.getPigContext().getDfs().isContainer("/tmp/output2"));
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testEmptyFilterRemoval() {
System.out.println("===== multi-query empty filters =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);");
myPig.registerQuery("b = filter a by uid>0;");
myPig.registerQuery("c = filter a by uid>5;");
myPig.registerQuery("d = filter c by uid<10;");
myPig.registerQuery("store b into '/tmp/output1';");
myPig.registerQuery("store b into '/tmp/output2';");
myPig.registerQuery("store b into '/tmp/output3';");
LogicalPlan lp = checkLogicalPlan(1, 3, 5);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 3, 10);
MROperPlan mp = checkMRPlan(pp, 1, 1, 1);
MapReduceOper mo = mp.getRoots().get(0);
checkPhysicalPlan(mo.mapPlan, 1, 1, 4);
PhysicalOperator leaf = mo.mapPlan.getLeaves().get(0);
Assert.assertTrue(leaf instanceof POSplit);
POSplit split = (POSplit)leaf;
int i = 0;
for (PhysicalPlan p: split.getPlans()) {
checkPhysicalPlan(p, 1, 1, 1);
++i;
}
Assert.assertEquals(i,3);
myPig.executeBatch();
myPig.discardBatch();
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithDescribe() {
System.out.println("===== multi-query with describe =====");
try {
String script = "a = load 'passwd' "
+ "using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);"
+ "b = filter a by uid > 5;"
+ "describe b;"
+ "store b into '/tmp/output1';\n";
GruntParser parser = new GruntParser(new StringReader(script));
parser.setInteractive(false);
parser.setParams(myPig);
parser.parseStopOnError();
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithIllustrate() {
System.out.println("===== multi-query with illustrate =====");
try {
String script = "a = load 'passwd' "
+ "using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);"
+ "b = filter a by uid > 5;"
+ "illustrate b;"
+ "store b into '/tmp/output1';\n";
GruntParser parser = new GruntParser(new StringReader(script));
parser.setInteractive(false);
parser.setParams(myPig);
parser.parseStopOnError();
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithExplain() {
System.out.println("===== multi-query with explain =====");
try {
String script = "a = load 'passwd' "
+ "using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);"
+ "b = filter a by uid > 5;"
+ "explain b;"
+ "store b into '/tmp/output1';\n";
GruntParser parser = new GruntParser(new StringReader(script));
parser.setInteractive(false);
parser.setParams(myPig);
parser.parseStopOnError();
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithDump() {
System.out.println("===== multi-query with dump =====");
try {
String script = "a = load 'passwd' "
+ "using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);"
+ "b = filter a by uid > 5;"
+ "dump b;"
+ "store b into '/tmp/output1';\n";
GruntParser parser = new GruntParser(new StringReader(script));
parser.setInteractive(false);
parser.setParams(myPig);
parser.parseStopOnError();
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testEmptyExecute() {
System.out.println("==== empty execute ====");
try {
myPig.setBatchOn();
myPig.executeBatch();
myPig.executeBatch();
myPig.discardBatch();
}
catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
// A test to verify there is no cycle in the plan if the load location is the same as the store location
@Test
public void testLoadStoreLoop() {
try {
String script = "a = load 'dummy'; b = filter a by $0 == 1; store b into 'dummy';\n";
GruntParser parser = new GruntParser(new StringReader(script));
parser.setInteractive(false);
parser.setParams(myPig);
myPig.getPigContext().inExplain = true;
parser.parseStopOnError();
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithNoStore2() {
System.out.println("===== multi-query with no store (2) =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int,gid:int);");
myPig.registerQuery("b = filter a by uid > 5;");
myPig.registerQuery("group b by gid;");
myPig.executeBatch();
myPig.discardBatch();
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
@Test
public void testMultiQueryWithCustomPartitioner() {
System.out.println("===== multi-query with intermediate stores =====");
try {
myPig.setBatchOn();
myPig.registerQuery("a = load 'passwd' " +
"using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
myPig.registerQuery("l = FILTER a BY uname == 'foo';");
myPig.registerQuery("b = GROUP a BY uname PARTITION BY " + SimpleCustomPartitioner.class.getName() + " PARALLEL 3;");
myPig.registerQuery("c = FOREACH b GENERATE FLATTEN(a) PARALLEL 3;");
myPig.registerQuery("STORE c INTO 'output1';");
myPig.registerQuery("STORE l INTO 'output2';");
LogicalPlan lp = checkLogicalPlan(1, 2, 6);
PhysicalPlan pp = checkPhysicalPlan(lp, 1, 2, 12);
MROperPlan mrp = checkMRPlan(pp, 1, 1, 1);
MapReduceOper mrop = mrp.getRoots().get(0);
Assert.assertTrue(mrop.getCustomPartitioner().equals(SimpleCustomPartitioner.class.getName()));
} catch (Exception e) {
e.printStackTrace();
Assert.fail();
}
}
// --------------------------------------------------------------------------
// Helper methods
private <T extends OperatorPlan<? extends Operator<?>>>
void showPlanOperators(T p) {
System.out.println("Operators:");
ArrayList<Operator<?>> ops = new ArrayList<Operator<?>>(p.getKeys()
.values());
Collections.sort(ops);
for (Operator<?> op : ops) {
System.out.println(" op: " + op.name());
}
System.out.println();
}
private LogicalPlan checkLogicalPlan(int expectedRoots,
int expectedLeaves, int expectedSize) throws IOException,
ParseException {
System.out.println("===== check logical plan =====");
LogicalPlan lp = null;
try {
java.lang.reflect.Method buildLp = myPig.getClass().getDeclaredMethod("buildLp");
buildLp.setAccessible(true);
lp = (LogicalPlan) buildLp.invoke( myPig );
Assert.assertNotNull(lp);
} catch (Exception e) {
PigException pe = LogUtils.getPigException(e);
if (pe != null) {
throw pe;
} else {
e.printStackTrace();
Assert.fail();
}
}
showLPOperators(lp);
ByteArrayOutputStream out = new ByteArrayOutputStream();
System.out.println("Logical Plan: " + lp );
System.out.println("===== Display Logical Plan =====");
System.out.println(out.toString());
Assert.assertEquals(expectedRoots, lp.getSources().size());
Assert.assertEquals(expectedLeaves, lp.getSinks().size());
Assert.assertEquals(expectedSize, lp.size());
return lp;
}
static void showLPOperators(LogicalPlan lp) {
System.out.println("Operators:");
Iterator<org.apache.pig.newplan.Operator> it = lp.getOperators();
while( it.hasNext() ) {
System.out.println(" op: " + it.next().getName());
}
System.out.println();
}
private void checkPhysicalPlan(PhysicalPlan pp, int expectedRoots,
int expectedLeaves, int expectedSize) throws IOException {
System.out.println("===== check physical plan =====");
showPlanOperators(pp);
ByteArrayOutputStream out = new ByteArrayOutputStream();
pp.explain(out);
System.out.println("===== Display Physical Plan =====");
System.out.println(out.toString());
Assert.assertEquals(expectedRoots, pp.getRoots().size());
Assert.assertEquals(expectedLeaves, pp.getLeaves().size());
Assert.assertEquals(expectedSize, pp.size());
}
private PhysicalPlan checkPhysicalPlan(LogicalPlan lp, int expectedRoots,
int expectedLeaves, int expectedSize) throws IOException {
System.out.println("===== check physical plan =====");
PhysicalPlan pp = myPig.getPigContext().getExecutionEngine().compile(
lp, null);
showPlanOperators(pp);
ByteArrayOutputStream out = new ByteArrayOutputStream();
pp.explain(out);
System.out.println("===== Display Physical Plan =====");
System.out.println(out.toString());
Assert.assertEquals(expectedRoots, pp.getRoots().size());
Assert.assertEquals(expectedLeaves, pp.getLeaves().size());
Assert.assertEquals(expectedSize, pp.size());
return pp;
}
private MROperPlan checkMRPlan(PhysicalPlan pp, int expectedRoots,
int expectedLeaves, int expectedSize) throws IOException {
System.out.println("===== check map-reduce plan =====");
MapRedUtil.checkLeafIsStore(pp, myPig.getPigContext());
MapReduceLauncher launcher = new MapReduceLauncher();
MROperPlan mrp = null;
try {
java.lang.reflect.Method compile = launcher.getClass()
.getDeclaredMethod("compile",
new Class[] { PhysicalPlan.class, PigContext.class });
compile.setAccessible(true);
mrp = (MROperPlan) compile.invoke(launcher, new Object[] { pp, myPig.getPigContext() });
Assert.assertNotNull(mrp);
} catch (Exception e) {
PigException pe = LogUtils.getPigException(e);
if (pe != null) {
throw pe;
} else {
e.printStackTrace();
Assert.fail();
}
}
showPlanOperators(mrp);
System.out.println("===== Display map-reduce Plan =====");
System.out.println(mrp.toString());
Assert.assertEquals(expectedRoots, mrp.getRoots().size());
Assert.assertEquals(expectedLeaves, mrp.getLeaves().size());
Assert.assertEquals(expectedSize, mrp.size());
return mrp;
}
private void deleteOutputFiles() {
try {
FileLocalizer.delete("/tmp/output1", myPig.getPigContext());
FileLocalizer.delete("/tmp/output2", myPig.getPigContext());
FileLocalizer.delete("/tmp/output3", myPig.getPigContext());
FileLocalizer.delete("/tmp/output4", myPig.getPigContext());
FileLocalizer.delete("/tmp/output5", myPig.getPigContext());
} catch (IOException e) {
e.printStackTrace();
Assert.fail();
}
}
}