Suggestions or Ideas on how to join the naive bayes model from training data and test data on hadoop

Question

I built my Naive Bayes Classifier for Text Classification on Java. Now I am trying to port it on hadoop. I have built the model using mappper and reducer and the output is like:

label1,word1    count
label1,word2    count
label1,word3    count
.
.
.
label2,word1    count
label2,word2    count
label2,word3    count
.
label3,word1    count
.
label4,word1    count

Total there are 4 labels that I have to classify the test data into: After building the model I am not able to move forward that how to classify the test data using model and using map reduce. Here is my current code:-

public class TrainHadoop extends Configured implements Tool {
private static final String OUTPUT_PATH = "/user/nitin/interOutput";

private  static String[] classes = {"CCAT", "ECAT", "GCAT", "MCAT"};
// for training data
public static class TrainMap extends Mapper<LongWritable, Text, Text, IntWritable>{

    private static IntWritable one = new IntWritable(1);
    private Text word = new Text();

    public Vector<String> tokenizeDoc(String cur_doc) {
        String[] words = cur_doc.split("\\s+");
        Vector<String> tokens = new Vector<String>();
        for (int i = 0; i < words.length; i++) {
            words[i] = words[i].replaceAll("\\W|_", "");
            if (words[i].length() > 0) {
                tokens.add(words[i].toLowerCase());
            }
        }
        return tokens;  
    }

    public void map(LongWritable key, Text value, Context context )
        throws IOException, InterruptedException{
        String[] line  = value.toString().split("\t");
        String[] labelsArray = line[0].split(",");

        Vector<String> indivWord = tokenizeDoc(line[1]);

        List<String> finalLabelsArray = new ArrayList<>();
        for (int i = 0; i < classes.length; i++) {
            for (int j = 0; j < labelsArray.length; j++) {
                if(classes[i].equals(labelsArray[j])){
                    finalLabelsArray.add(classes[i]);
                }
            }
        }
        word.set("labelsInstances");
        context.write(word, new IntWritable(finalLabelsArray.size()));

        for(String label : finalLabelsArray){
            // variable and logic for storing total instances of each class
            context.write(new Text(label), one);

            // total no. of words for each class
            context.write(new Text(label + "*"), new IntWritable(indivWord.size()));

            // for each class calculating the no. of occurence of each word
            for (int i  = 0; i < indivWord.size(); i++) {
                context.write(new Text(label + "^," + indivWord.get(i)), one);
            }
            // for vocab size
            for (int i  = 0; i < indivWord.size(); i++) {
                context.write(new Text("A=" + indivWord.get(i)), one);
            }
        }
    }
}

// mappers for test data set classifying
public static class TestMap1 extends Mapper<LongWritable, Text, Text, IntWritable>{

}

public static class TestMap2 extends Mapper<LongWritable, Text, Text, IntWritable>{


}

public static class TrainReduce extends Reducer<Text,IntWritable,Text,IntWritable> {
    public void reduce(Text key, Iterable<IntWritable> values, Context context) 
        throws IOException, InterruptedException{
        int sum = 0;
        for(IntWritable val : values){
            sum += val.get();
        }
        context.write(key, new IntWritable(sum));
    }
}   

public static class TestReduce extends Reducer<Text,IntWritable,Text,IntWritable> {
        }

@Override
public int run(String[] args) throws Exception {
  /*
   * Job 1
   */

        Configuration trainConf = new Configuration();
        Job trainJob  = Job.getInstance(trainConf, "training");

        trainJob.setJarByClass(TrainHadoop.class);


        trainJob.setMapperClass(TrainMap.class);
        trainJob.setReducerClass(TrainReduce.class);
        //trainJob.setCombinerClass(Reduce.class);

        trainJob.setInputFormatClass(TextInputFormat.class);
        trainJob.setOutputFormatClass(TextOutputFormat.class);

        // output from reducer and mapper
        trainJob.setOutputKeyClass(Text.class);
        trainJob.setOutputValueClass(IntWritable.class);

        FileInputFormat.addInputPath(trainJob, new Path(args[0]));
        FileOutputFormat.setOutputPath(trainJob, new Path(OUTPUT_PATH));    

        trainJob.waitForCompletion(true);
    /*
     * Job 2
     */

        Configuration testConf = new Configuration();
        Job testJob = Job.getInstance(testConf, "training");

        testJob.setJarByClass(TrainHadoop.class);                                                                                           

        testJob.setMapperClass(TestMap1.class);
        testJob.setMapperClass(TestMap2.class);
        testJob.setReducerClass(TestReduce.class);
        //testJob.setCombinerClass(Reduce.class);

        testJob.setInputFormatClass(TextInputFormat.class);
        testJob.setOutputFormatClass(TextOutputFormat.class);

        // output from reducer and mapper
        testJob.setOutputKeyClass(Text.class);
        testJob.setOutputValueClass(IntWritable.class);


        MultipleInputs.addInputPath(testJob, new Path(OUTPUT_PATH + "/part-r-[0-9]*"), TextInputFormat.class, TestMap1.class);
        MultipleInputs.addInputPath(testJob, new Path(args[1]), TextInputFormat.class, TestMap2.class);
        FileOutputFormat.setOutputPath(testJob, new Path(args[2])); 

        return testJob.waitForCompletion(true) ? 0 : 1;     
}

public static void main(String[] args) throws Exception{
    ToolRunner.run(new Configuration(), new TrainHadoop(), args);       
}
}