/*
* 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.IOException;
import java.util.Collection;
import java.util.Properties;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.pig.CounterBasedErrorHandler;
import org.apache.pig.ErrorHandling;
import org.apache.pig.ExecType;
import org.apache.pig.ErrorHandler;
import org.apache.pig.PigConfiguration;
import org.apache.pig.PigServer;
import org.apache.pig.backend.executionengine.ExecJob.JOB_STATUS;
import org.apache.pig.builtin.PigStorage;
import org.apache.pig.builtin.mock.Storage;
import org.apache.pig.builtin.mock.Storage.Data;
import org.apache.pig.data.Tuple;
import org.apache.pig.data.TupleFactory;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.google.common.collect.Lists;
import com.google.common.io.Files;
/**
* This class contains Unit tests for store func which has a certain error
* threshold set.
*
*/
public class TestErrorHandlingStoreFunc {
private static PigServer pigServer;
private File tempDir;
@Before
public void setup() throws IOException {
pigServer = new PigServer(ExecType.LOCAL);
tempDir = Files.createTempDir();
tempDir.deleteOnExit();
}
@After
public void tearDown() throws Exception {
pigServer.shutdown();
tempDir.delete();
}
public static class TestErroroneousStoreFunc extends PigStorage implements
ErrorHandling {
protected static AtomicLong COUNTER = new AtomicLong();
@Override
public void putNext(Tuple f) throws IOException {
long count = COUNTER.incrementAndGet();
super.putNext(f);
if (count % 3 == 0) {
throw new RuntimeException("Throw error for test");
}
}
@Override
public ErrorHandler getErrorHandler() {
return new CounterBasedErrorHandler();
}
}
public static class TestErroroneousStoreFunc2 extends PigStorage implements
ErrorHandling {
protected static AtomicLong COUNTER = new AtomicLong();
@Override
public void putNext(Tuple f) throws IOException {
long count = COUNTER.incrementAndGet();
super.putNext(f);
if (count % 3 == 0) {
throw new RuntimeException("Throw error for test");
}
}
@Override
public ErrorHandler getErrorHandler() {
return new CounterBasedErrorHandler();
}
}
/**
* Test Pig job succeeds even with errors within threshold
*
*/
@Test
public void testStorerWithErrorInLimit() throws Exception {
updatePigProperties(true, 3L, 0.4);
runTest(JOB_STATUS.COMPLETED);
}
/**
* Test Pig job fails if errors exceed min errors and threshold
*/
@Test
public void testStorerWithErrorOutExceedingLimit() throws Exception {
updatePigProperties(true, 2L, 0.3);
runTest(JOB_STATUS.FAILED);
}
/**
* Test Pig Job fails on error if the config is set to false
*
* @throws Exception
*/
@Test
public void testStorerWithConfigNotEnabled() throws Exception {
updatePigProperties(false, 3L, 0.3);
runTest(JOB_STATUS.FAILED);
}
/**
* Test Pig Job with multiple stores.
*
* @throws Exception
*/
@Test
public void testMultiStore() throws Exception {
updatePigProperties(true, 3L, 0.4);
pigServer.getPigContext().getProperties()
.put(PigConfiguration.PIG_OPT_MULTIQUERY, "" + true);
Data data = Storage.resetData(pigServer);
final Collection<Tuple> list = Lists.newArrayList();
// Create input dataset
int rows = 10;
for (int i = 0; i < rows; i++) {
Tuple t = TupleFactory.getInstance().newTuple();
t.append(i);
t.append("a" + i);
list.add(t);
}
data.set("in", "id:int,name:chararray", list);
pigServer.setBatchOn();
pigServer.registerQuery("A = LOAD 'in' USING mock.Storage();");
String storeAQuery = "store A into '" + tempDir.getAbsolutePath()
+ "/output' using " + TestErroroneousStoreFunc.class.getName()
+ "();";
pigServer.registerQuery(storeAQuery);
pigServer.registerQuery("B = FILTER A by id >0;");
String storeBQuery = "store B into '" + tempDir.getAbsolutePath()
+ "/output2' using "
+ TestErroroneousStoreFunc2.class.getName() + "();";
pigServer.registerQuery(storeBQuery);
if (pigServer.executeBatch().get(0).getStatus() != JOB_STATUS.COMPLETED) {
throw new RuntimeException("Job failed", pigServer.executeBatch()
.get(0).getException());
}
}
private void runTest(JOB_STATUS expectedJobStatus) throws Exception {
Data data = Storage.resetData(pigServer);
final Collection<Tuple> list = Lists.newArrayList();
// Create input dataset
int rows = 10;
for (int i = 0; i < rows; i++) {
Tuple t = TupleFactory.getInstance().newTuple();
t.append(i);
t.append("a" + i);
list.add(t);
}
data.set("in", "id:int,name:chararray", list);
pigServer.setBatchOn();
pigServer.registerQuery("A = LOAD 'in' USING mock.Storage();");
String storeQuery = "store A into '" + tempDir.getAbsolutePath()
+ "/output' using " + TestErroroneousStoreFunc.class.getName()
+ "();";
pigServer.registerQuery(storeQuery);
if (pigServer.executeBatch().get(0).getStatus() != expectedJobStatus) {
throw new RuntimeException("Job did not reach the expected status"
+ pigServer.executeBatch().get(0).getStatus());
}
}
private void updatePigProperties(boolean allowErrors, long minErrors,
double errorThreshold) {
Properties properties = pigServer.getPigContext().getProperties();
properties.put(PigConfiguration.PIG_ERROR_HANDLING_ENABLED,
Boolean.toString(allowErrors));
properties.put(PigConfiguration.PIG_ERROR_HANDLING_MIN_ERROR_RECORDS,
Long.toString(minErrors));
properties.put(PigConfiguration.PIG_ERROR_HANDLING_THRESHOLD_PERCENT,
Double.toString(errorThreshold));
}
}