Hadoop?????????????ú????MRUnit
???????????? ???????[ 2013/12/11 10:55:14 ] ????????
????ReduceDriver
???????Reduce??????????????????????Reduce?????Map??Combiner?????n???????????????????????
|
private Reduce reducer;
@Before
public void setUp() {
reducer = new Reduce();
reduceDriver = new ReduceDriver<Text?? TimeInfo?? Text??LongWritable>(reducer);
}
@Test
public void testReduce () {
List<TimeInfo> values = new ArrayList<TimeInfo>();
values.add(new TimeInfo(1?? 3));//???3С?
values.add(new TimeInfo(2?? 5));//???????5С?
values.add(new TimeInfo(3?? 7));//???????7С?
//values???444???????reduce????
//?????????????2С?
reduceDriver.withReducer(reducer)
.withInput(new Text("444")?? values)
.withOutput(new Text("444")??new LongWritable(2))
.runTest();
}
|
????MapReduceDriver
?????????Map??Reduce?????????????
|
private MapReduceDriver<LongWritable?? Text?? Text?? TimeInfo?? Text?? LongWritable> mrDriver;
private Map mapper;
private Reduce reducer;
@Before
public void setUp() {
mapper = new Map();
reducer = new Reduce();
mrDriver = new MapReduceDriver<LongWritable?? Text?? Text?? TimeInfo?? Text?? LongWritable>(mapper?? reducer);
}
@Test
public void testMapReduce_3record_1user() {
Text mapInputValue1 = new Text("……");
Text mapInputValue2 = new Text("……");
Text mapInputValue3 = new Text("……");
//??????????????????Map????????
//??reduce??????444??????????????2С?.
mrDriver.withInput(null?? mapInputValue1)
.withInput(null?? mapInputValue2)
.withInput(null?? mapInputValue3)
.withOutput(new Text("444")??new LongWritable(2))
.runTest();
}
|
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