/**
* Copyright 2011 Nube Technologies
*
* Licensed 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 co.nubetech.hiho.merge;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import java.io.IOException;
import java.util.ArrayList;
import org.apache.hadoop.io.BytesWritable;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Counter;
import org.apache.hadoop.mapreduce.Counters;
import org.apache.hadoop.mapreduce.Reducer;
import org.junit.Test;
import co.nubetech.hiho.dedup.HihoTuple;
public class TestMergeKeyReducer {
@Test
public void testReducerValidValues() throws IOException,
InterruptedException {
Text key = new Text("key123");
HihoTuple hihoTuple = new HihoTuple();
hihoTuple.setKey(key);
HihoValue hihoValue1 = new HihoValue();
HihoValue hihoValue2 = new HihoValue();
Text value1 = new Text("value1");
Text value2 = new Text("value2");
hihoValue1.setVal(value1);
hihoValue2.setVal(value2);
hihoValue1.setIsOld(true);
hihoValue2.setIsOld(false);
ArrayList<HihoValue> values = new ArrayList<HihoValue>();
values.add(hihoValue1);
values.add(hihoValue2);
Reducer.Context context = mock(Reducer.Context.class);
Counters counters = new Counters();
Counter counter = counters.findCounter(MergeRecordCounter.OUTPUT);
when(context.getCounter(MergeRecordCounter.OUTPUT)).thenReturn(counter);
MergeKeyReducer mergeReducer = new MergeKeyReducer();
mergeReducer.reduce(hihoTuple, values, context);
verify(context).write(key, value2);
assertEquals(1, context.getCounter(MergeRecordCounter.OUTPUT)
.getValue());
}
@Test
public void testReducerNullValues() throws IOException,
InterruptedException {
Text key = new Text("key123");
HihoTuple hihoTuple = new HihoTuple();
hihoTuple.setKey(key);
HihoValue hihoValue1 = new HihoValue();
HihoValue hihoValue2 = new HihoValue();
Text value1 = new Text("value1");
Text value2 = new Text("value2");
hihoValue1.setVal(value1);
hihoValue2.setVal(value2);
hihoValue1.setIsOld(true);
hihoValue2.setIsOld(false);
ArrayList<HihoValue> values = new ArrayList<HihoValue>();
Reducer.Context context = mock(Reducer.Context.class);
Counters counters = new Counters();
Counter counter = counters.findCounter(MergeRecordCounter.OUTPUT);
when(context.getCounter(MergeRecordCounter.OUTPUT)).thenReturn(counter);
MergeKeyReducer mergeReducer = new MergeKeyReducer();
mergeReducer.reduce(hihoTuple, values, context);
verify(context).write(key, null);
assertEquals(1, context.getCounter(MergeRecordCounter.OUTPUT)
.getValue());
}
@Test
public void testReducerForLongWritableKey() throws IOException,
InterruptedException {
LongWritable key = new LongWritable(Long.parseLong("123"));
HihoTuple hihoTuple = new HihoTuple();
hihoTuple.setKey(key);
HihoValue hihoValue1 = new HihoValue();
HihoValue hihoValue2 = new HihoValue();
Text value1 = new Text("value1");
Text value2 = new Text("value2");
hihoValue1.setVal(value1);
hihoValue2.setVal(value2);
hihoValue1.setIsOld(true);
hihoValue2.setIsOld(false);
ArrayList<HihoValue> values = new ArrayList<HihoValue>();
values.add(hihoValue1);
values.add(hihoValue2);
Reducer.Context context = mock(Reducer.Context.class);
Counters counters = new Counters();
Counter counter = counters.findCounter(MergeRecordCounter.OUTPUT);
when(context.getCounter(MergeRecordCounter.OUTPUT)).thenReturn(counter);
MergeKeyReducer mergeReducer = new MergeKeyReducer();
mergeReducer.reduce(hihoTuple, values, context);
verify(context).write(key, value2);
assertEquals(1, context.getCounter(MergeRecordCounter.OUTPUT)
.getValue());
}
@Test
public void testReducerForBytesWritableKeyAndValue() throws IOException,
InterruptedException {
BytesWritable key = new BytesWritable("abc123".getBytes());
HihoTuple hihoTuple = new HihoTuple();
hihoTuple.setKey(key);
HihoValue hihoValue1 = new HihoValue();
HihoValue hihoValue2 = new HihoValue();
BytesWritable value1 = new BytesWritable("value1".getBytes());
BytesWritable value2 = new BytesWritable("value2".getBytes());
hihoValue1.setVal(value1);
hihoValue2.setVal(value2);
hihoValue1.setIsOld(true);
hihoValue2.setIsOld(false);
ArrayList<HihoValue> values = new ArrayList<HihoValue>();
values.add(hihoValue1);
values.add(hihoValue2);
Reducer.Context context = mock(Reducer.Context.class);
Counters counters = new Counters();
Counter counter = counters.findCounter(MergeRecordCounter.OUTPUT);
when(context.getCounter(MergeRecordCounter.OUTPUT)).thenReturn(counter);
MergeKeyReducer mergeReducer = new MergeKeyReducer();
mergeReducer.reduce(hihoTuple, values, context);
verify(context).write(key, value2);
assertEquals(1, context.getCounter(MergeRecordCounter.OUTPUT)
.getValue());
}
@Test
public void testReducerForIntWritableKeyAndValue() throws IOException,
InterruptedException {
IntWritable key = new IntWritable(123);
HihoTuple hihoTuple = new HihoTuple();
hihoTuple.setKey(key);
HihoValue hihoValue1 = new HihoValue();
HihoValue hihoValue2 = new HihoValue();
IntWritable value1 = new IntWritable(456);
IntWritable value2 = new IntWritable(789);
hihoValue1.setVal(value1);
hihoValue2.setVal(value2);
hihoValue1.setIsOld(true);
hihoValue2.setIsOld(false);
ArrayList<HihoValue> values = new ArrayList<HihoValue>();
values.add(hihoValue1);
values.add(hihoValue2);
Reducer.Context context = mock(Reducer.Context.class);
Counters counters = new Counters();
Counter counter = counters.findCounter(MergeRecordCounter.OUTPUT);
when(context.getCounter(MergeRecordCounter.OUTPUT)).thenReturn(counter);
MergeKeyReducer mergeReducer = new MergeKeyReducer();
mergeReducer.reduce(hihoTuple, values, context);
verify(context).write(key, value2);
assertEquals(1, context.getCounter(MergeRecordCounter.OUTPUT)
.getValue());
}
}