Source attached, could you tell me why the card in the case of reduce0 map0 % %?
Using pseudo distributed installation

 package cn. Itcast. Mapreduce3; 

The import cn. Itcast. Mapreduce2. JobMain2; 
Import org, apache hadoop. Conf. Configuration; 
Import org, apache hadoop. Conf. Configured; 
Import org, apache hadoop. Fs. The Path; 
Import org, apache hadoop. IO. Text; 
Import org, apache hadoop. Graphs. The Job; 
Import org, apache hadoop. Graphs. Lib. Input. TextInputFormat; 
Import org, apache hadoop. Graphs. Lib. Output. TextOutputFormat; 
Import org, apache hadoop. Util. Tool; 
Import org, apache hadoop. Util. ToolRunner; 

The import java.net.URI; 

Public class JobMain3 extends Configured implements Tool {
Public int the run (String [] strings) throws the Exception {
Job job3=Job. GetInstance (super getConf (), "job3"); 
System. SetProperty (" HADOOP_USER_NAME ", "root"); 
Job3. AddCacheFile (new URI (" HDFS://localhost: 9000/TFIDF/part - r - 00000 ")); 
Job3. AddCacheFile (new URI (" HDFS://localhost: 9000/TFIDF/part - r - 00003 ")); 
Job3. SetMapperClass (TFIDF_mapper3. Class); 
Job3. SetMapOutputKeyClass (Text. Class); 
Job3. SetMapOutputValueClass (Text. Class); 
Job3. SetInputFormatClass (TextInputFormat. Class); 
TextInputFormat. AddInputPath (job3, new Path (" file:///D:\\hdfsdata\\TFIDF_result1 ")); 
Job3. SetReducerClass (TFIDF_reudce3. Class); 
Job3. SetOutputKeyClass (Text. Class); 
Job3. SetOutputValueClass (Text. Class); 
Job3. SetOutputFormatClass (TextOutputFormat. Class); 
TextOutputFormat. SetOutputPath (job3, new Path (" file:///D:\\hdfsdata\\TFIDF_result3 ")); 
Boolean b=job3. WaitForCompletion (true); 
Return b? 1-0. 
} 

Public static void main (String [] args) throws the Exception {
The Configuration Configuration=new Configuration (); 
Int run=ToolRunner. Run (configuration, new JobMain3 (), args); 
System. The exit (run); 
} 
} 

 package cn. Itcast. Mapreduce3; 

Import org, apache hadoop. Fs. FSDataInputStream; 
Import org, apache hadoop. Fs. FileSystem; 
Import org, apache hadoop. Fs. The Path; 
Import org, apache hadoop. IO. LongWritable; 
Import org, apache hadoop. IO. Text; 
Import org, apache hadoop. Graphs. InputSplit; 
Import org, apache hadoop. Graphs. Mapper; 
Import org, apache hadoop. Graphs. Lib. Input. FileSplit; 
Import org, apache hadoop. Yarn. Webapp. Hamlet. Hamlet; 

Import the Java. IO. BufferedReader; 
Import the Java. IO. FileReader; 
Import the Java. IO. IOException; 
Import the Java. IO. InputStreamReader; 
The import java.net.URI; 
Import the Java. Text. NumberFormat; 
Import the Java. Util. HashMap; 
Import the Java. Util. The Map; 

Public class TFIDF_mapper3 extends Mapper {
Total deposit//weibo D 
Private static Map Cmap=null; 
Deposit//df a certain number of words in the text 
Private static Map Df=null; 

Protected void setup (Context Context) throws IOException, InterruptedException {
If (cmap==null | | cmap. The size ()==0 | | df==null | | df. The size ()==0) {
URI [] cacheFiles=context. GetCacheFiles ();//part - r - 00000, part - r - 00003 
If (cacheFiles!=null) {
//will have two documents so will use a for loop to find corresponding document 
for (int i=0; i URI URI=cacheFiles [I]; 
If (uri. GetPath (). The endsWith (" part - r - 00003 ")) {
//Path Path=new Path (uri getPath ());//this is the Path to part - r - 00003 for the Path of the Path 
FileSystem FileSystem=FileSystem. Get (cacheFiles [I], context, getConfiguration ()); 
FSDataInputStream a dataInputStream=fileSystem. Open (new Path (cacheFiles [I])); 
//to get corresponding Path content, is a byte stream - "character buffer flow 
BufferedReader BufferedReader=new BufferedReader (new InputStreamReader (a dataInputStream)); 
String readLine=bufferedReader readLine (); 
If (readLine. StartsWith (" count ")) {
The split String []=readLine. Split (" \ t ");//when I was only a set of data using if operation 
Cmap=new HashMap (a); 
Cmap. Put (split [0], Integer. The parseInt (split [1]. The trim ())); 
} 
BufferedReader. The close (); 
FileSystem. The close (); 
} 
Else if (uri. GetPath (). The endsWith (" part - r - 00000 ")) {
FileSystem FileSystem=FileSystem. Get (cacheFiles [I], context, getConfiguration ()); 
FSDataInputStream a dataInputStream=fileSystem. Open (new Path (cacheFiles [I])); 
BufferedReader BufferedReader=new BufferedReader (new InputStreamReader (a dataInputStream)); 
String readLine=bufferedReader readLine (); 
While (readLine!=null) {
The split String []=readLine. Split (" \ t "); 
Df=new HashMap (a); 
Df. Put (split [0], Integer. The parseInt (split [1]. The trim ())); 
} 
BufferedReader. The close (); 
FileSystem. The close (); 
} 
} 
} 
} 
} 

Protected void map (LongWritable key, the Text value, Context Context) throws IOException, InterruptedException {
//the Map phase read data is: part - r - 00000000-01000-02... So we should read the four file path getInputSplit 
FileSplit FileSplit=(FileSplit) context. GetInputSplit (); 
String name=fileSplit. GetPath (). The getName (); nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull