/*
* 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.File;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
import junit.framework.TestCase;
import org.apache.pig.ExecType;
import org.apache.pig.PigServer;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.backend.executionengine.ExecJob;
import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.SecondaryKeyOptimizer;
import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.plans.MROperPlan;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.plans.PhysicalPlan;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.DefaultBagFactory;
import org.apache.pig.data.Tuple;
import org.apache.pig.impl.PigContext;
import org.apache.pig.impl.io.FileLocalizer;
import org.apache.pig.impl.logicalLayer.LogicalPlan;
import org.apache.pig.test.utils.LogicalPlanTester;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
@RunWith(JUnit4.class)
public class TestSecondarySort extends TestCase {
static MiniCluster cluster = MiniCluster.buildCluster();
private PigServer pigServer;
static PigContext pc;
static {
pc = new PigContext(ExecType.MAPREDUCE, MiniCluster.buildCluster().getProperties());
try {
pc.connect();
} catch (ExecException e) {
e.printStackTrace();
}
}
@AfterClass
public static void oneTimeTearDown() throws Exception {
cluster.shutDown();
}
@Before
@Override
public void setUp() throws Exception {
FileLocalizer.setR(new Random());
pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
}
@Test
public void testDistinctOptimization1() throws Exception {
// Limit in the foreach plan
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = LOAD 'input2' AS (b0, b1, b2);");
planTester.buildPlan("C = cogroup A by a0, B by b0;");
planTester.buildPlan("D = foreach C { E = limit A 10; F = E.a1; G = DISTINCT F; generate group, COUNT(G);};");
LogicalPlan lp = planTester.buildPlan("store D into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 0);
assertTrue(so.getDistinctChanged() == 1);
}
@Test
public void testDistinctOptimization2() throws Exception {
// Distinct on one entire input
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0;");
planTester.buildPlan("C = foreach B { D = distinct A; generate group, D;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 0);
assertTrue(so.getDistinctChanged() == 1);
}
@Test
public void testDistinctOptimization3() throws Exception {
// Distinct on the prefix of main sort key
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0;");
planTester.buildPlan("C = foreach B { D = A.a0; E = distinct D; generate group, E;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 0);
assertTrue(so.getNumSortRemoved() == 0);
assertTrue(so.getDistinctChanged() == 1);
}
@Test
public void testDistinctOptimization4() throws Exception {
// Distinct on secondary key again, should remove
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0;");
planTester.buildPlan("C = foreach B { D = A.a1; E = distinct D; F = distinct E; generate group, F;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 0);
assertTrue(so.getDistinctChanged() == 2);
}
@Test
public void testDistinctOptimization5() throws Exception {
// Filter in foreach plan
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0;");
planTester.buildPlan("C = foreach B { D = A.a1; E = distinct D; F = filter E by $0=='1'; generate group, F;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 0);
assertTrue(so.getDistinctChanged() == 1);
}
@Test
public void testDistinctOptimization6() throws Exception {
// group by * with no schema, and distinct key is not part of main key
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1';");
planTester.buildPlan("B = group A by *;");
planTester.buildPlan("C = foreach B { D = limit A 10; E = D.$1; F = DISTINCT E; generate group, COUNT(F);};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 0);
assertTrue(so.getDistinctChanged() == 1);
}
@Test
public void testDistinctOptimization7() throws Exception {
// group by * with no schema, distinct key is more specific than the main key
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1';");
planTester.buildPlan("B = group A by *;");
planTester.buildPlan("C = foreach B { D = limit A 10; E = D.$0; F = DISTINCT E; generate group, COUNT(F);};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 0);
assertTrue(so.getDistinctChanged() == 1);
}
@Test
public void testDistinctOptimization8() throws Exception {
// local arrange plan is an expression
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0+$1;");
planTester.buildPlan("C = foreach B { D = limit A 10; E = D.$0; F = DISTINCT E; generate group, COUNT(F);};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 0);
assertTrue(so.getDistinctChanged() == 1);
}
@Test
public void testDistinctOptimization9() throws Exception {
// local arrange plan is nested project
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' as (a:tuple(a0:int, a1:chararray));");
planTester.buildPlan("B = group A by a.a1;");
planTester.buildPlan("C = foreach B { D = A.a; E = DISTINCT D; generate group, COUNT(E);};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 0);
assertTrue(so.getDistinctChanged() == 1);
}
@Test
public void testSortOptimization1() throws Exception {
// Sort on something other than the main key
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0;");
planTester.buildPlan("C = foreach B { D = limit A 10; E = order D by $1; generate group, E;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 1);
assertTrue(so.getDistinctChanged() == 0);
}
@Test
public void testSortOptimization2() throws Exception {
// Sort on the prefix of the main key
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0;");
planTester.buildPlan("C = foreach B { D = limit A 10; E = order D by $0; generate group, E;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 0);
assertTrue(so.getNumSortRemoved() == 1);
assertTrue(so.getDistinctChanged() == 0);
}
@Test
public void testSortOptimization3() throws Exception {
// Sort on the main key prefix / non main key prefix mixed
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0;");
planTester
.buildPlan("C = foreach B { D = limit A 10; E = order D by $1; F = order E by $0; generate group, F;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 2);
assertTrue(so.getDistinctChanged() == 0);
}
@Test
public void testSortOptimization4() throws Exception {
// Sort on the main key again
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0;");
planTester.buildPlan("C = foreach B { D = limit A 10; E = order D by $0, $1, $2; generate group, E;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 1);
assertTrue(so.getDistinctChanged() == 0);
}
@Test
public void testSortOptimization5() throws Exception {
// Sort on the two keys, we can only take off 1
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0;");
planTester
.buildPlan("C = foreach B { D = limit A 10; E = order D by $1; F = order E by $2; generate group, F;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 1);
assertTrue(so.getDistinctChanged() == 0);
}
@Test
public void testSortOptimization6() throws Exception {
// Sort desc
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by $0;");
planTester.buildPlan("C = foreach B { D = order A by $0 desc; generate group, D;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 1);
assertTrue(so.getDistinctChanged() == 0);
}
@Test
public void testSortOptimization7() throws Exception {
// Sort asc on 1st key, desc on 2nd key
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0, a1, a2);");
planTester.buildPlan("B = group A by ($0, $1);");
planTester.buildPlan("C = foreach B { D = order A by $0, $1 desc; generate group, D;};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 1);
assertTrue(so.getDistinctChanged() == 0);
}
// See PIG-1193
@Test
public void testSortOptimization8() throws Exception {
// Sort desc, used in UDF twice
LogicalPlanTester planTester = new LogicalPlanTester();
planTester.buildPlan("A = LOAD 'input1' AS (a0);");
planTester.buildPlan("B = group A all;");
planTester.buildPlan("C = foreach B { D = order A by $0 desc; generate DIFF(D, D);};");
LogicalPlan lp = planTester.buildPlan("store C into '/tmp';");
PhysicalPlan pp = Util.buildPhysicalPlan(lp, pc);
MROperPlan mrPlan = Util.buildMRPlan(pp, pc);
SecondaryKeyOptimizer so = new SecondaryKeyOptimizer(mrPlan);
so.visit();
assertTrue(so.getNumMRUseSecondaryKey() == 1);
assertTrue(so.getNumSortRemoved() == 2);
assertTrue(so.getDistinctChanged() == 0);
}
@Test
public void testNestedDistinctEndToEnd1() throws Exception {
File tmpFile1 = Util.createTempFileDelOnExit("test", "txt");
PrintStream ps1 = new PrintStream(new FileOutputStream(tmpFile1));
ps1.println("1\t2\t3");
ps1.println("1\t3\t4");
ps1.println("1\t2\t4");
ps1.println("1\t2\t4");
ps1.println("1\t2\t4");
ps1.println("2\t3\t4");
ps1.close();
File tmpFile2 = Util.createTempFileDelOnExit("test", "txt");
PrintStream ps2 = new PrintStream(new FileOutputStream(tmpFile2));
ps2.println("1\t4\t4");
ps2.println("2\t3\t1");
ps2.close();
Util.copyFromLocalToCluster(cluster, tmpFile1.getCanonicalPath(), tmpFile1.getCanonicalPath());
Util.copyFromLocalToCluster(cluster, tmpFile2.getCanonicalPath(), tmpFile2.getCanonicalPath());
pigServer.registerQuery("A = LOAD '" + tmpFile1.getCanonicalPath() + "' AS (a0, a1, a2);");
pigServer.registerQuery("B = LOAD '" + tmpFile2.getCanonicalPath() + "' AS (b0, b1, b2);");
pigServer.registerQuery("C = cogroup A by a0, B by b0 parallel 2;");
pigServer
.registerQuery("D = foreach C { E = limit A 10; F = E.a1; G = DISTINCT F; generate group, COUNT(G);};");
Iterator<Tuple> iter = pigServer.openIterator("D");
assertTrue(iter.hasNext());
assertTrue(iter.next().toString().equals("(1,2)"));
assertTrue(iter.hasNext());
assertTrue(iter.next().toString().equals("(2,1)"));
assertFalse(iter.hasNext());
Util.deleteFile(cluster, tmpFile1.getCanonicalPath());
Util.deleteFile(cluster, tmpFile2.getCanonicalPath());
}
@Test
public void testNestedDistinctEndToEnd2() throws Exception {
File tmpFile1 = Util.createTempFileDelOnExit("test", "txt");
PrintStream ps1 = new PrintStream(new FileOutputStream(tmpFile1));
ps1.println("1\t2\t3");
ps1.println("1\t3\t4");
ps1.println("1\t2\t4");
ps1.println("1\t2\t4");
ps1.println("1\t2\t4");
ps1.println("2\t3\t4");
ps1.close();
Util.copyFromLocalToCluster(cluster, tmpFile1.getCanonicalPath(), tmpFile1.getCanonicalPath());
pigServer.registerQuery("A = LOAD '" + tmpFile1.getCanonicalPath() + "' AS (a0, a1, a2);");
pigServer.registerQuery("B = group A by $0 parallel 2;");
pigServer.registerQuery("C = foreach B { D = distinct A; generate group, D;};");
Iterator<Tuple> iter = pigServer.openIterator("C");
assertTrue(iter.hasNext());
assertTrue(iter.next().toString().equals("(1,{(1,2,3),(1,2,4),(1,3,4)})"));
assertTrue(iter.hasNext());
assertTrue(iter.next().toString().equals("(2,{(2,3,4)})"));
assertFalse(iter.hasNext());
Util.deleteFile(cluster, tmpFile1.getCanonicalPath());
}
@Test
public void testNestedSortEndToEnd1() throws Exception {
File tmpFile1 = Util.createTempFileDelOnExit("test", "txt");
PrintStream ps1 = new PrintStream(new FileOutputStream(tmpFile1));
ps1.println("1\t2\t3");
ps1.println("1\t3\t4");
ps1.println("1\t2\t4");
ps1.println("1\t2\t4");
ps1.println("1\t2\t4");
ps1.println("2\t3\t4");
ps1.close();
Util.copyFromLocalToCluster(cluster, tmpFile1.getCanonicalPath(), tmpFile1.getCanonicalPath());
pigServer.registerQuery("A = LOAD '" + tmpFile1.getCanonicalPath() + "' AS (a0, a1, a2);");
pigServer.registerQuery("B = group A by $0 parallel 2;");
pigServer.registerQuery("C = foreach B { D = limit A 10; E = order D by $1; generate group, E;};");
Iterator<Tuple> iter = pigServer.openIterator("C");
assertTrue(iter.hasNext());
assertTrue(iter.next().toString().equals("(1,{(1,2,3),(1,2,4),(1,2,4),(1,2,4),(1,3,4)})"));
assertTrue(iter.hasNext());
assertTrue(iter.next().toString().equals("(2,{(2,3,4)})"));
assertFalse(iter.hasNext());
Util.deleteFile(cluster, tmpFile1.getCanonicalPath());
}
@Test
public void testNestedSortEndToEnd2() throws Exception {
File tmpFile1 = Util.createTempFileDelOnExit("test", "txt");
PrintStream ps1 = new PrintStream(new FileOutputStream(tmpFile1));
ps1.println("1\t2\t3");
ps1.println("1\t3\t4");
ps1.println("1\t4\t4");
ps1.println("1\t2\t4");
ps1.println("1\t8\t4");
ps1.println("2\t3\t4");
ps1.close();
Util.copyFromLocalToCluster(cluster, tmpFile1.getCanonicalPath(), tmpFile1.getCanonicalPath());
pigServer.registerQuery("A = LOAD '" + tmpFile1.getCanonicalPath() + "' AS (a0, a1, a2);");
pigServer.registerQuery("B = group A by $0 parallel 2;");
pigServer.registerQuery("C = foreach B { D = order A by a1 desc; generate group, D;};");
Iterator<Tuple> iter = pigServer.openIterator("C");
assertTrue(iter.hasNext());
assertEquals("(1,{(1,8,4),(1,4,4),(1,3,4),(1,2,3),(1,2,4)})", iter.next().toString());
assertTrue(iter.hasNext());
assertEquals("(2,{(2,3,4)})", iter.next().toString());
assertFalse(iter.hasNext());
Util.deleteFile(cluster, tmpFile1.getCanonicalPath());
}
// @Test
public void testNestedSortEndToEnd3() throws Exception {
File tmpFile1 = Util.createTempFileDelOnExit("test", "txt");
PrintStream ps1 = new PrintStream(new FileOutputStream(tmpFile1));
ps1.println("1\t2\t3");
ps1.println("1\t3\t4");
ps1.println("1\t2\t4");
ps1.println("1\t2\t4");
ps1.println("1\t2\t4");
ps1.println("2\t3\t4");
ps1.close();
File tmpFile2 = Util.createTempFileDelOnExit("test", "txt");
PrintStream ps2 = new PrintStream(new FileOutputStream(tmpFile2));
ps2.println("1\t4\t4");
ps2.println("2\t3\t1");
ps2.close();
Util.copyFromLocalToCluster(cluster, tmpFile1.getCanonicalPath(), tmpFile1.getCanonicalPath());
Util.copyFromLocalToCluster(cluster, tmpFile2.getCanonicalPath(), tmpFile2.getCanonicalPath());
pigServer.registerQuery("A = LOAD '" + tmpFile1.getCanonicalPath() + "' AS (a0, a1, a2);");
pigServer.registerQuery("B = LOAD '" + tmpFile2.getCanonicalPath() + "' AS (b0, b1, b2);");
pigServer.registerQuery("C = cogroup A by (a0,a1), B by (b0,b1) parallel 2;");
pigServer.registerQuery("D = ORDER C BY group;");
pigServer.registerQuery("E = foreach D { F = limit A 10; G = ORDER F BY a2; generate group, COUNT(G);};");
Iterator<Tuple> iter = pigServer.openIterator("E");
assertTrue(iter.hasNext());
assertEquals("((1,2),4)", iter.next().toString());
assertTrue(iter.hasNext());
assertEquals("((1,3),1)", iter.next().toString());
assertTrue(iter.hasNext());
assertEquals("((1,4),0)", iter.next().toString());
assertTrue(iter.hasNext());
assertEquals("((2,3),1)", iter.next().toString());
assertFalse(iter.hasNext());
Util.deleteFile(cluster, tmpFile1.getCanonicalPath());
Util.deleteFile(cluster, tmpFile2.getCanonicalPath());
}
@Test
public void testNestedSortMultiQueryEndToEnd1() throws Exception {
pigServer.setBatchOn();
Util.copyFromLocalToCluster(cluster, "test/org/apache/pig/test/data/passwd",
"testNestedSortMultiQueryEndToEnd1-input.txt");
pigServer.registerQuery("a = load 'testNestedSortMultiQueryEndToEnd1-input.txt'"
+ " using PigStorage(':') as (uname:chararray, passwd:chararray, uid:int, gid:int);");
pigServer.registerQuery("b = group a by uname parallel 2;");
pigServer.registerQuery("c = group a by gid parallel 2;");
pigServer.registerQuery("d = foreach b generate SUM(a.gid);");
pigServer.registerQuery("e = foreach c { f = order a by uid; generate group, f; };");
pigServer.registerQuery("store d into '/tmp/output1';");
pigServer.registerQuery("store e into '/tmp/output2';");
List<ExecJob> jobs = pigServer.executeBatch();
for (ExecJob job : jobs) {
assertTrue(job.getStatus() == ExecJob.JOB_STATUS.COMPLETED);
}
FileLocalizer.delete("/tmp/output1", pigServer.getPigContext());
FileLocalizer.delete("/tmp/output2", pigServer.getPigContext());
Util.deleteFile(cluster, "testNestedSortMultiQueryEndToEnd1-input.txt");
}
}