/*
* 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 static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import org.apache.pig.EvalFunc;
import org.apache.pig.ExecType;
import org.apache.pig.FuncSpec;
import org.apache.pig.LoadFunc;
import org.apache.pig.PigServer;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.POStatus;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.Result;
import org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POLoad;
import org.apache.pig.builtin.PigStorage;
import org.apache.pig.data.BagFactory;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.DataByteArray;
import org.apache.pig.data.Tuple;
import org.apache.pig.data.TupleFactory;
import org.apache.pig.impl.PigContext;
import org.apache.pig.impl.io.FileSpec;
import org.apache.pig.impl.logicalLayer.schema.Schema;
import org.apache.pig.impl.plan.OperatorKey;
import org.apache.pig.test.utils.TestHelper;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.Test;
public class TestFRJoin {
private static final String INPUT_FILE = "testFrJoinInput.txt";
private static final String INPUT_FILE2 = "testFrJoinInput2.txt";
private PigServer pigServer;
private static MiniCluster cluster = MiniCluster.buildCluster();
public TestFRJoin() throws ExecException, IOException {
pigServer = new PigServer(ExecType.MAPREDUCE, cluster.getProperties());
}
@Before
public void setUp() throws Exception {
int LOOP_SIZE = 2;
String[] input = new String[2 * LOOP_SIZE];
int k = 0;
for(int i = 1; i <= LOOP_SIZE; i++) {
String si = i + "";
for (int j = 1; j <= LOOP_SIZE; j++)
input[k++] = si + "\t" + j;
}
Util.createInputFile(cluster, INPUT_FILE, input);
String[] input2 = new String[2 * (LOOP_SIZE / 2)];
k = 0;
for (int i = 1; i <= LOOP_SIZE / 2; i++) {
String si = i + "";
for (int j = 1; j <= LOOP_SIZE / 2; j++)
input2[k++] = si + "\t" + j;
}
Util.createInputFile(cluster, INPUT_FILE2, input2);
}
@AfterClass
public static void oneTimeTearDown() throws Exception {
cluster.shutDown();
}
@After
public void tearDown() throws Exception {
Util.deleteFile(cluster, INPUT_FILE);
Util.deleteFile(cluster, INPUT_FILE2);
}
public static class FRJoin extends EvalFunc<DataBag> {
String repl;
int keyField;
boolean isTblSetUp = false;
Hashtable<String, DataBag> replTbl = new Hashtable<String, DataBag>();
public FRJoin() {
}
public FRJoin(String repl) {
this.repl = repl;
}
@Override
public DataBag exec(Tuple input) throws IOException {
if (!isTblSetUp) {
setUpHashTable();
isTblSetUp = true;
}
String key = (String)input.get(keyField);
if (!replTbl.containsKey(key))
return BagFactory.getInstance().newDefaultBag();
return replTbl.get(key);
}
private void setUpHashTable() throws IOException {
FileSpec replFile = new FileSpec(repl, new FuncSpec(PigStorage.class.getName() + "()"));
POLoad ld = new POLoad(new OperatorKey("Repl File Loader", 1L), replFile);
PigContext pc = new PigContext(ExecType.MAPREDUCE, PigMapReduce.sJobConfInternal.get());
pc.connect();
ld.setPc(pc);
Tuple dummyTuple = null;
for (Result res = ld.getNextTuple(); res.returnStatus != POStatus.STATUS_EOP; res = ld
.getNextTuple()) {
Tuple tup = (Tuple)res.result;
LoadFunc lf = ((LoadFunc)pc.instantiateFuncFromSpec(ld.getLFile().getFuncSpec()));
String key = lf.getLoadCaster().bytesToCharArray(
((DataByteArray)tup.get(keyField)).get());
Tuple csttup = TupleFactory.getInstance().newTuple(2);
csttup.set(0, key);
csttup.set(1, lf.getLoadCaster().bytesToInteger(((DataByteArray)tup.get(1)).get()));
DataBag vals = null;
if (replTbl.containsKey(key)) {
vals = replTbl.get(key);
}
else {
vals = BagFactory.getInstance().newDefaultBag();
replTbl.put(key, vals);
}
vals.add(csttup);
}
}
}
@Test
public void testSortFRJoin() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("D = ORDER A by y;");
pigServer.registerQuery("E = ORDER B by y;");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
{
pigServer.registerQuery("C = join D by $0, E by $0 using \'replicated\';");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("C = join D by $0, E by $0;");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
assertEquals(dbfrj.size(), dbshj.size());
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testDistinctFRJoin() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("D = distinct A ;");
pigServer.registerQuery("E = distinct B ;");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
{
pigServer.registerQuery("C = join D by $0, E by $0 using 'replicated';");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("C = join D by $0, E by $0;");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
assertEquals(dbfrj.size(), dbshj.size());
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testUDFFRJ() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:chararray,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (x:chararray,y:int);");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
{
String fSpec = FRJoin.class.getName() + "('" + INPUT_FILE + "')";
pigServer.registerFunction("FRJ", new FuncSpec(fSpec));
pigServer.registerQuery("C = foreach A generate *, flatten(FRJ(*));");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("C = join A by $0, B by $0;");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
assertTrue(dbfrj.size() > 0);
assertTrue(dbshj.size() > 0);
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testFRJoinOut1() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
{
pigServer.registerQuery("C = join A by $0, B by $0 using 'replicated';");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("C = join A by $0, B by $0;");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
assertTrue(dbfrj.size() > 0);
assertTrue(dbshj.size() > 0);
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testFRJoinOut2() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "';");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "';");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
{
pigServer.registerQuery("C = join A by $0, B by $0 using 'replicated';");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("C = join A by $0, B by $0;");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
assertTrue(dbfrj.size() > 0);
assertTrue(dbshj.size() > 0);
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testFRJoinOut3() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("C = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
{
pigServer.registerQuery("D = join A by $0, B by $0, C by $0 using 'replicated';");
Iterator<Tuple> iter = pigServer.openIterator("D");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("D = join A by $0, B by $0, C by $0;");
Iterator<Tuple> iter = pigServer.openIterator("D");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
assertTrue(dbfrj.size() > 0);
assertTrue(dbshj.size() > 0);
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testFRJoinOut4() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "';");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "';");
pigServer.registerQuery("C = LOAD '" + INPUT_FILE + "';");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
{
pigServer.registerQuery("D = join A by $0, B by $0, C by $0 using 'replicated';");
Iterator<Tuple> iter = pigServer.openIterator("D");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("D = join A by $0, B by $0, C by $0;");
Iterator<Tuple> iter = pigServer.openIterator("D");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
assertTrue(dbfrj.size() > 0);
assertTrue(dbshj.size() > 0);
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testFRJoinOut5() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
{
pigServer.registerQuery("C = join A by ($0,$1), B by ($0,$1) using 'replicated';");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("C = join A by ($0,$1), B by ($0,$1);");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
assertTrue(dbfrj.size() > 0);
assertTrue(dbshj.size() > 0);
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testFRJoinOut6() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "';");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "';");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
{
pigServer.registerQuery("C = join A by ($0,$1), B by ($0,$1) using 'replicated';");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("C = join A by ($0,$1), B by ($0,$1);");
Iterator<Tuple> iter = pigServer.openIterator("C");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
assertTrue(dbfrj.size() > 0);
assertTrue(dbshj.size() > 0);
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testFRJoinOut7() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
{
pigServer.registerQuery("C = join A by $0, B by $0 using 'replicated';");
pigServer.registerQuery("D = join A by $1, B by $1 using 'replicated';");
pigServer.registerQuery("E = union C,D;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
dbfrj.add(iter.next());
}
}
{
pigServer.registerQuery("C = join A by $0, B by $0;");
pigServer.registerQuery("D = join A by $1, B by $1;");
pigServer.registerQuery("E = union C,D;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
dbshj.add(iter.next());
}
}
assertTrue(dbfrj.size() > 0);
assertTrue(dbshj.size() > 0);
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testFRJoinOut8() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE2 + "' as (x:int,y:int);");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
Map<String, Tuple> hashFRJoin = new HashMap<String, Tuple>();
Map<String, Tuple> hashJoin = new HashMap<String, Tuple>();
{
pigServer.registerQuery("C = join A by $0 left, B by $0 using 'replicated';");
pigServer.registerQuery("D = join A by $1 left, B by $1 using 'replicated';");
pigServer.registerQuery("E = union C,D;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
Tuple tuple = iter.next();
String Key = tuple.toDelimitedString(",");
hashFRJoin.put(Key, tuple);
dbfrj.add(tuple);
}
}
{
pigServer.registerQuery("C = join A by $0 left, B by $0;");
pigServer.registerQuery("D = join A by $1 left, B by $1;");
pigServer.registerQuery("E = union C,D;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
Tuple tuple = iter.next();
String Key = tuple.toDelimitedString(",");
hashJoin.put(Key, tuple);
dbshj.add(tuple);
}
}
assertTrue(dbfrj.size() > 0);
assertTrue(dbshj.size() > 0);
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testFRJoinOut9() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE2 + "' as (x:int,y:int);");
DataBag dbfrj = BagFactory.getInstance().newDefaultBag(), dbshj = BagFactory.getInstance()
.newDefaultBag();
Map<String, Tuple> hashFRJoin = new HashMap<String, Tuple>();
Map<String, Tuple> hashJoin = new HashMap<String, Tuple>();
{
pigServer.registerQuery("C = join A by $0 left, B by $0 using 'repl';");
pigServer.registerQuery("D = join A by $1 left, B by $1 using 'repl';");
pigServer.registerQuery("E = union C,D;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
Tuple tuple = iter.next();
String Key = tuple.toDelimitedString(",");
hashFRJoin.put(Key, tuple);
dbfrj.add(tuple);
}
}
{
pigServer.registerQuery("C = join A by $0 left, B by $0;");
pigServer.registerQuery("D = join A by $1 left, B by $1;");
pigServer.registerQuery("E = union C,D;");
Iterator<Tuple> iter = pigServer.openIterator("E");
while (iter.hasNext()) {
Tuple tuple = iter.next();
String Key = tuple.toDelimitedString(",");
hashJoin.put(Key, tuple);
dbshj.add(tuple);
}
}
assertTrue(dbfrj.size() > 0);
assertTrue(dbshj.size() > 0);
assertTrue(TestHelper.compareBags(dbfrj, dbshj));
}
@Test
public void testFRJoinSch1() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
Schema frjSch = null, shjSch = null;
pigServer.registerQuery("C = join A by $0, B by $0 using 'repl';");
frjSch = pigServer.dumpSchema("C");
pigServer.registerQuery("C = join A by $0, B by $0;");
shjSch = pigServer.dumpSchema("C");
assertEquals(shjSch, frjSch);
}
@Test
public void testFRJoinSch2() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "';");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "';");
Schema frjSch = null, shjSch = null;
pigServer.registerQuery("C = join A by $0, B by $0 using 'repl';");
frjSch = pigServer.dumpSchema("C");
pigServer.registerQuery("C = join A by $0, B by $0;");
shjSch = pigServer.dumpSchema("C");
assertNull(shjSch);
}
@Test
public void testFRJoinSch3() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("C = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
Schema frjSch = null, shjSch = null;
pigServer.registerQuery("D = join A by $0, B by $0, C by $0 using 'repl';");
frjSch = pigServer.dumpSchema("D");
pigServer.registerQuery("D = join A by $0, B by $0, C by $0;");
shjSch = pigServer.dumpSchema("D");
assertEquals(shjSch, frjSch);
}
@Test
public void testFRJoinSch4() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "';");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "';");
pigServer.registerQuery("C = LOAD '" + INPUT_FILE + "';");
Schema frjSch = null, shjSch = null;
pigServer.registerQuery("D = join A by $0, B by $0, C by $0 using 'repl';");
frjSch = pigServer.dumpSchema("D");
pigServer.registerQuery("D = join A by $0, B by $0, C by $0;");
shjSch = pigServer.dumpSchema("D");
assertNull(shjSch);
}
@Test
public void testFRJoinSch5() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (x:int,y:int);");
Schema frjSch = null, shjSch = null;
pigServer.registerQuery("C = join A by ($0,$1), B by ($0,$1) using 'repl';");
frjSch = pigServer.dumpSchema("C");
pigServer.registerQuery("C = join A by ($0,$1), B by ($0,$1);");
shjSch = pigServer.dumpSchema("C");
assertEquals(shjSch, frjSch);
}
@Test
public void testFRJoinSch6() throws IOException {
pigServer.registerQuery("A = LOAD '" + INPUT_FILE + "';");
pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "';");
Schema frjSch = null, shjSch = null;
pigServer.registerQuery("C = join A by ($0,$1), B by ($0,$1) using 'repl';");
frjSch = pigServer.dumpSchema("C");
pigServer.registerQuery("C = join A by ($0,$1), B by ($0,$1);");
shjSch = pigServer.dumpSchema("C");
assertNull(shjSch);
}
}