/*
* 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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.pig.test;
import static org.junit.Assert.assertEquals;
import org.apache.hadoop.conf.Configuration;
import org.apache.pig.data.DataBag;
import org.apache.pig.data.Tuple;
import org.apache.pig.data.TupleFactory;
import org.apache.pig.impl.PigImplConstants;
import org.apache.pig.impl.builtin.GFCross;
import org.apache.pig.impl.util.UDFContext;
import org.junit.Test;
public class TestGFCross {
// Test GFCross returns the correct number of default
// join groups
@Test
public void testDefault() throws Exception {
UDFContext.getUDFContext().addJobConf(null);
Tuple t = TupleFactory.getInstance().newTuple(2);
t.set(0, 2);
t.set(1, 0);
GFCross cross = new GFCross("1");
DataBag bag = cross.exec(t);
assertEquals(10, bag.size());
}
// Test GFCross handles the parallel 1 case.
@Test
public void testSerial() throws Exception {
Configuration cfg = new Configuration();
cfg.set(PigImplConstants.PIG_CROSS_PARALLELISM + ".1", "1");
UDFContext.getUDFContext().addJobConf(cfg);
Tuple t = TupleFactory.getInstance().newTuple(2);
t.set(0, 2);
t.set(1, 0);
GFCross cross = new GFCross("1");
DataBag bag = cross.exec(t);
assertEquals(1, bag.size());
}
// Test GFCross handles a different parallel case.
@Test
public void testParallelSet() throws Exception {
Configuration cfg = new Configuration();
cfg.set(PigImplConstants.PIG_CROSS_PARALLELISM + ".1", "10");
UDFContext.getUDFContext().addJobConf(cfg);
Tuple t = TupleFactory.getInstance().newTuple(2);
t.set(0, 2);
t.set(1, 0);
GFCross cross = new GFCross("1");
DataBag bag = cross.exec(t);
assertEquals(4, bag.size());
}
}