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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.assertEquals;
import java.io.File;
import java.io.PrintWriter;
import java.util.Iterator;
import org.apache.pig.PigServer;
import org.apache.pig.data.DataType;
import org.apache.pig.data.Tuple;
import org.apache.pig.impl.io.FileLocalizer;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.Test;
public class TestStoreOld {
static MiniGenericCluster cluster = MiniGenericCluster.buildCluster();
private int LOOP_COUNT = 1024;
String fileName;
String tmpFile1, tmpFile2;
PigServer pig;
@AfterClass
public static void oneTimeTearDown() throws Exception {
cluster.shutDown();
}
@Test
public void testSingleStore() throws Exception{
pig.registerQuery("A = load " + fileName + ";");
pig.store("A", tmpFile1);
pig.registerQuery("B = load " + tmpFile1 + ";");
Iterator<Tuple> iter = pig.openIterator("B");
int i =0;
while (iter.hasNext()){
Tuple t = iter.next();
assertEquals(DataType.toInteger(t.get(0)).intValue(),i);
assertEquals(DataType.toInteger(t.get(1)).intValue(),i);
i++;
}
}
@Test
public void testMultipleStore() throws Exception{
pig.registerQuery("A = load " + fileName + ";");
pig.store("A", tmpFile1);
pig.registerQuery("B = foreach (group A by $0) generate $0, SUM($1.$0);");
pig.store("B", tmpFile2);
pig.registerQuery("C = load " + tmpFile2 + ";");
Iterator<Tuple> iter = pig.openIterator("C");
int i =0;
while (iter.hasNext()){
Tuple t = iter.next();
i++;
}
assertEquals(LOOP_COUNT, i);
}
@Test
public void testStoreWithMultipleMRJobs() throws Exception{
pig.registerQuery("A = load " + fileName + ";");
pig.registerQuery("B = foreach (group A by $0) generate $0, SUM($1.$0);");
pig.registerQuery("C = foreach (group B by $0) generate $0, SUM($1.$0);");
pig.registerQuery("D = foreach (group C by $0) generate $0, SUM($1.$0);");
pig.store("D", tmpFile2);
pig.registerQuery("E = load " + tmpFile2 + ";");
Iterator<Tuple> iter = pig.openIterator("E");
int i =0;
while (iter.hasNext()){
Tuple t = iter.next();
i++;
}
assertEquals(LOOP_COUNT, i);
}
@Before
public void setUp() throws Exception {
File f = File.createTempFile("tmp", "");
PrintWriter pw = new PrintWriter(f);
for (int i=0;i<LOOP_COUNT; i++){
pw.println(i + "\t" + i);
}
pw.close();
pig = new PigServer(cluster.getExecType(), cluster.getProperties());
fileName = "'" + FileLocalizer.hadoopify(f.toString(), pig.getPigContext()) + "'";
tmpFile1 = "'" + FileLocalizer.getTemporaryPath(pig.getPigContext()).toString() + "'";
tmpFile2 = "'" + FileLocalizer.getTemporaryPath(pig.getPigContext()).toString() + "'";
f.delete();
}
}