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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 static org.junit.Assert.assertTrue;
import java.io.File;
import java.util.ArrayList;
import java.util.Iterator;
import org.apache.pig.ExecType;
import org.apache.pig.PigServer;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.builtin.PigStorage;
import org.apache.pig.data.Tuple;
import org.apache.pig.data.TupleFactory;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class TestStreamingLocal {
private TupleFactory tf = TupleFactory.getInstance();
PigServer pigServer;
private static final String simpleEchoStreamingCommand;
static {
String quote = "'";
if (Util.WINDOWS) {
quote= "\"";
}
simpleEchoStreamingCommand = "perl -ne "+quote+"print $_"+quote;
}
@Before
public void setUp() throws Exception {
pigServer = new PigServer(ExecType.LOCAL);
}
@After
public void tearDown() throws Exception {
pigServer.shutdown();
}
private Tuple[] setupExpectedResults(Object[] firstField,
Object[] secondField) throws ExecException {
Assert.assertEquals(firstField.length, secondField.length);
Tuple[] expectedResults = new Tuple[firstField.length];
for (int i=0; i < expectedResults.length; ++i) {
expectedResults[i] = tf.newTuple(2);
expectedResults[i].set(0, firstField[i]);
expectedResults[i].set(1, secondField[i]);
}
return expectedResults;
}
@Test
public void testSimpleMapSideStreaming()
throws Exception {
File input = Util.createInputFile("tmp", "",
new String[] {"A,1", "B,2", "C,3", "D,2",
"A,5", "B,5", "C,8", "A,8",
"D,8", "A,9"});
// Expected results
String[] expectedFirstFields = new String[] {"A", "B", "C", "A", "D", "A"};
Integer[] expectedSecondFields = new Integer[] {5, 5, 8, 8, 8, 9};
boolean[] withTypes = {true, false};
for (int i = 0; i < withTypes.length; i++) {
Tuple[] expectedResults = null;
if(withTypes[i] == true) {
expectedResults =
setupExpectedResults(expectedFirstFields, expectedSecondFields);
} else {
expectedResults = setupExpectedResults(Util
.toDataByteArrays(expectedFirstFields), Util
.toDataByteArrays(expectedSecondFields));
}
// Pig query to run
pigServer.registerQuery("IP = load '" +
Util.generateURI(Util.encodeEscape(input.toString()), pigServer.getPigContext()) +
"' using " + PigStorage.class.getName() + "(',');");
pigServer.registerQuery("FILTERED_DATA = filter IP by $1 > '3';");
pigServer.registerQuery("S1 = stream FILTERED_DATA through `" +
simpleEchoStreamingCommand + "`;");
if(withTypes[i] == true) {
pigServer.registerQuery("OP = stream S1 through `" +
simpleEchoStreamingCommand + "` as (f0:chararray, f1:int);");
} else {
pigServer.registerQuery("OP = stream S1 through `" +
simpleEchoStreamingCommand + "`;");
}
// Run the query and check the results
Util.checkQueryOutputs(pigServer.openIterator("OP"), expectedResults);
}
}
@Test
public void testSimpleMapSideStreamingWithOutputSchema()
throws Exception {
File input = Util.createInputFile("tmp", "",
new String[] {"A,1", "B,2", "C,3", "D,2",
"A,5", "B,5", "C,8", "A,8",
"D,8", "A,9"});
// Expected results
Object[] expectedFirstFields = new String[] {"C", "A", "D", "A"};
Object[] expectedSecondFields = new Integer[] {8, 8, 8, 9};
boolean[] withTypes = {true, false};
for (int i = 0; i < withTypes.length; i++) {
Tuple[] expectedResults = null;
if(withTypes[i] == true) {
expectedResults =
setupExpectedResults(expectedFirstFields, expectedSecondFields);
} else {
expectedResults = setupExpectedResults(Util
.toDataByteArrays(expectedFirstFields), Util
.toDataByteArrays(expectedSecondFields));
}
// Pig query to run
pigServer.registerQuery("IP = load '" +
Util.generateURI(Util.encodeEscape(input.toString()), pigServer.getPigContext()) +
"' using " + PigStorage.class.getName() + "(',');");
pigServer.registerQuery("FILTERED_DATA = filter IP by $1 > '3';");
if(withTypes[i] == true) {
pigServer.registerQuery("STREAMED_DATA = stream FILTERED_DATA through `" +
simpleEchoStreamingCommand + "` as (f0:chararray, f1:int);");
} else {
pigServer.registerQuery("STREAMED_DATA = stream FILTERED_DATA through `" +
simpleEchoStreamingCommand + "` as (f0, f1);");
}
pigServer.registerQuery("OP = filter STREAMED_DATA by f1 > 6;");
// Run the query and check the results
Util.checkQueryOutputs(pigServer.openIterator("OP"), expectedResults);
}
}
@Test
public void testSimpleReduceSideStreamingAfterFlatten()
throws Exception {
File input = Util.createInputFile("tmp", "",
new String[] {"A,1", "B,2", "C,3", "D,2",
"A,5", "B,5", "C,8", "A,8",
"D,8", "A,9"});
// Expected results
String[] expectedFirstFields = new String[] {"A", "A", "A", "B", "C", "D"};
Integer[] expectedSecondFields = new Integer[] {5, 8, 9, 5, 8, 8};
boolean[] withTypes = {true, false};
for (int i = 0; i < withTypes.length; i++) {
Tuple[] expectedResults = null;
if(withTypes[i] == true) {
expectedResults =
setupExpectedResults(expectedFirstFields, expectedSecondFields);
} else {
expectedResults = setupExpectedResults(Util
.toDataByteArrays(expectedFirstFields), Util
.toDataByteArrays(expectedSecondFields));
}
// Pig query to run
pigServer.registerQuery("IP = load '" +
Util.generateURI(Util.encodeEscape(input.toString()), pigServer.getPigContext()) +
"' using " + PigStorage.class.getName() + "(',');");
pigServer.registerQuery("FILTERED_DATA = filter IP by $1 > '3';");
pigServer.registerQuery("GROUPED_DATA = group FILTERED_DATA by $0;");
pigServer.registerQuery("FLATTENED_GROUPED_DATA = foreach GROUPED_DATA " +
"generate flatten($1);");
pigServer.registerQuery("S1 = stream FLATTENED_GROUPED_DATA through `" +
simpleEchoStreamingCommand + "`;");
if(withTypes[i] == true) {
pigServer.registerQuery("OP = stream S1 through `" +
simpleEchoStreamingCommand + "` as (f0:chararray, f1:int);");
} else {
pigServer.registerQuery("OP = stream S1 through `" +
simpleEchoStreamingCommand + "`;");
}
// Run the query and check the results
Util.checkQueryOutputsAfterSort(pigServer.openIterator("OP"), expectedResults);
}
}
@Test
public void testSimpleOrderedReduceSideStreamingAfterFlatten() throws Exception {
File input = Util.createInputFile("tmp", "",
new String[] {"A,1,2,3", "B,2,4,5",
"C,3,1,2", "D,2,5,2",
"A,5,5,1", "B,5,7,4",
"C,8,9,2", "A,8,4,5",
"D,8,8,3", "A,9,2,5"}
);
// Expected results
String[] expectedFirstFields =
new String[] {"A", "A", "A", "A", "B", "B", "C", "C", "D", "D"};
Integer[] expectedSecondFields = new Integer[] {1, 9, 8, 5, 2, 5, 3, 8, 2, 8};
Integer[] expectedThirdFields = new Integer[] {2, 2, 4, 5, 4, 7, 1, 9, 5, 8};
Integer[] expectedFourthFields = new Integer[] {3, 5, 5, 1, 5, 4, 2, 2, 2, 3};
Tuple[] expectedResults = new Tuple[10];
for (int i = 0; i < expectedResults.length; ++i) {
expectedResults[i] = tf.newTuple(4);
expectedResults[i].set(0, expectedFirstFields[i]);
expectedResults[i].set(1, expectedSecondFields[i]);
expectedResults[i].set(2, expectedThirdFields[i]);
expectedResults[i].set(3, expectedFourthFields[i]);
}
//setupExpectedResults(expectedFirstFields, expectedSecondFields);
// Pig query to run
pigServer.registerQuery("IP = load '" +
Util.generateURI(Util.encodeEscape(input.toString()), pigServer.getPigContext()) +
"' using " + PigStorage.class.getName() + "(',');");
pigServer.registerQuery("FILTERED_DATA = filter IP by $1 > '3';");
pigServer.registerQuery("S1 = stream FILTERED_DATA through `" +
simpleEchoStreamingCommand + "`;");
pigServer.registerQuery("S2 = stream S1 through `" +
simpleEchoStreamingCommand + "`;");
pigServer.registerQuery("GROUPED_DATA = group IP by $0;");
pigServer.registerQuery("ORDERED_DATA = foreach GROUPED_DATA { " +
" D = order IP BY $2, $3;" +
" generate flatten(D);" +
"};");
pigServer.registerQuery("S3 = stream ORDERED_DATA through `" +
simpleEchoStreamingCommand + "`;");
pigServer.registerQuery("OP = stream S3 through `" +
simpleEchoStreamingCommand + "` as (f0:chararray, f1:int, f2:int, f3:int);");
// Run the query and check the results
Util.checkQueryOutputs(pigServer.openIterator("OP"), expectedResults);
}
@Test
public void testSimpleMapSideStreamingWithUnixPipes()
throws Exception {
File input = Util.createInputFile("tmp", "",
new String[] {"A,1", "B,2", "C,3", "D,2",
"A,5", "B,5", "C,8", "A,8",
"D,8", "A,9"});
// Expected results
String[] expectedFirstFields =
new String[] {"A", "B", "C", "D", "A", "B", "C", "A", "D", "A"};
Integer[] expectedSecondFields = new Integer[] {1, 2, 3, 2, 5, 5, 8, 8, 8, 9};
boolean[] withTypes = {true, false};
for (int i = 0; i < withTypes.length; i++) {
Tuple[] expectedResults = null;
if(withTypes[i] == true) {
expectedResults =
setupExpectedResults(expectedFirstFields, expectedSecondFields);
} else {
expectedResults =
setupExpectedResults(Util.toDataByteArrays(expectedFirstFields), Util.toDataByteArrays(expectedSecondFields));
}
// Pig query to run
pigServer.registerQuery("define CMD `" + simpleEchoStreamingCommand +
" | " + simpleEchoStreamingCommand + "`;");
pigServer.registerQuery("IP = load '" +
Util.generateURI(Util.encodeEscape(input.toString()), pigServer.getPigContext()) +
"' using " + PigStorage.class.getName() + "(',');");
if(withTypes[i] == true) {
pigServer.registerQuery("OP = stream IP through CMD as (f0:chararray, f1:int);");
} else {
pigServer.registerQuery("OP = stream IP through CMD;");
}
// Run the query and check the results
Util.checkQueryOutputs(pigServer.openIterator("OP"), expectedResults);
}
}
@Test
public void testJoinTwoStreamingRelations()
throws Exception {
ArrayList<String> list = new ArrayList<String>();
for (int i=0; i<10000; i++) {
list.add("A," + i);
}
File input = Util.createInputFile("tmp", "", list.toArray(new String[0]));
// Expected results
Tuple expected = TupleFactory.getInstance().newTuple(4);
expected.set(0, "A");
expected.set(1, 0);
expected.set(2, "A");
expected.set(3, 0);
pigServer.registerQuery("A = load '" +
Util.generateURI(Util.encodeEscape(input.toString()), pigServer.getPigContext()) +
"' using " + PigStorage.class.getName() + "(',') as (a0, a1);");
pigServer.registerQuery("B = stream A through `head -1` as (a0, a1);");
pigServer.registerQuery("C = load '" +
Util.generateURI(Util.encodeEscape(input.toString()), pigServer.getPigContext()) +
"' using " + PigStorage.class.getName() + "(',') as (a0, a1);");
pigServer.registerQuery("D = stream C through `head -1` as (a0, a1);");
pigServer.registerQuery("E = join B by a0, D by a0;");
Iterator<Tuple> iter = pigServer.openIterator("E");
int count = 0;
while (iter.hasNext()) {
Assert.assertEquals(expected.toString(), iter.next().toString());
count++;
}
Assert.assertTrue(count == 1);
}
@Test
public void testLocalNegativeLoadStoreOptimization() throws Exception {
testNegativeLoadStoreOptimization(ExecType.LOCAL);
}
private void testNegativeLoadStoreOptimization(ExecType execType)
throws Exception {
File input = Util.createInputFile("tmp", "",
new String[] {"A,1", "B,2", "C,3", "D,2",
"A,5", "B,5", "C,8", "A,8",
"D,8", "A,9"});
// Expected results
String[] expectedFirstFields = new String[] {"A", "B", "C", "A", "D", "A"};
Integer[] expectedSecondFields = new Integer[] {5, 5, 8, 8, 8, 9};
boolean[] withTypes = {true, false};
for (int i = 0; i < withTypes.length; i++) {
Tuple[] expectedResults = null;
if(withTypes[i] == true) {
expectedResults =
setupExpectedResults(expectedFirstFields, expectedSecondFields);
} else {
expectedResults = setupExpectedResults(Util
.toDataByteArrays(expectedFirstFields), Util
.toDataByteArrays(expectedSecondFields));
}
// Pig query to run
pigServer.registerQuery("define CMD `"+ simpleEchoStreamingCommand +
"` input(stdin);");
pigServer.registerQuery("IP = load '" +
Util.generateURI(Util.encodeEscape(input.toString()), pigServer.getPigContext()) +
"' using " + PigStorage.class.getName() + "(',');");
pigServer.registerQuery("FILTERED_DATA = filter IP by $1 > '3';");
if(withTypes[i] == true) {
pigServer.registerQuery("OP = stream FILTERED_DATA through `" +
simpleEchoStreamingCommand + "` as (f0:chararray, f1:int);");
} else {
pigServer.registerQuery("OP = stream FILTERED_DATA through `" +
simpleEchoStreamingCommand + "`;");
}
// Run the query and check the results
Util.checkQueryOutputs(pigServer.openIterator("OP"), expectedResults);
}
}
}