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window intelij 提交mr到yarn集群方法

window intelij 提交mr到yarn集群方法

作者: 一条IT | 来源:发表于2019-02-25 18:39 被阅读23次

    https://blog.csdn.net/qq_28039433/article/details/78150649
    https://blog.csdn.net/u011654631/article/details/70037219

    import java.io.IOException;
    import java.util.Properties;
    import java.util.StringTokenizer;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.Path;
    import org.apache.hadoop.hdfs.server.namenode.top.window.RollingWindowManager;
    import org.apache.hadoop.io.IntWritable;
    import org.apache.hadoop.io.Text;
    import org.apache.hadoop.mapreduce.Job;
    import org.apache.hadoop.mapreduce.Mapper;
    import org.apache.hadoop.mapreduce.Reducer;
    import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
    import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
    import org.apache.hadoop.util.GenericOptionsParser;
    
    import static org.apache.hadoop.security.UserGroupInformation.isSecurityEnabled;
    
    public class WordCount {
    
        public static class TokenizerMapper
                extends Mapper<Object, Text, Text, IntWritable> {
    
            private final static IntWritable one = new IntWritable(1);
            private Text word = new Text();
    
            public void map(Object key, Text value, Context context) throws IOException, InterruptedException {
                StringTokenizer itr = new StringTokenizer(value.toString());
                while (itr.hasMoreTokens()) {
                    word.set(itr.nextToken());
                    context.write(word, one);
                }
            }
        }
    
        public static class IntSumReducer extends Reducer<Text, IntWritable, Text, IntWritable> {
            private IntWritable result = new IntWritable();
    
            public void reduce(Text key, Iterable<IntWritable> values, Context context) throws IOException, InterruptedException {
                int sum = 0;
                for (IntWritable val : values) {
                    sum += val.get();
                }
                result.set(sum);
                context.write(key, result);
            }
        }
    
        public static void main(String[] args) throws Exception {
            System.setProperty("HADOOP_USER_NAME", "hadoop3");
            System.setProperty("hadoop.home.dir", "d:\\hadoop-2.8.3");
            Configuration conf = new Configuration();
            conf.set("fs.default.name", "hdfs://192.168.47.140:8020");
    
    //        conf.set("hadoop.job.user", "Administrator");
            conf.set("mapreduce.app-submission.cross-platform", "true");
            conf.set("mapreduce.framework.name", "yarn");
            conf.set("mapred.jar","C:\\Users\\Administrator\\IdeaProjects\\mavenYarn\\out\\artifacts\\mavenYarn_jar\\mavenYarn.jar");
            String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
            if (otherArgs.length < 2) {
                System.err.println("Usage: wordcount <in> [<in>...] <out>");
                System.exit(2);
            }
            Job job = Job.getInstance(conf, "word count");
            job.setJarByClass(WordCount.class);
            job.setMapperClass(TokenizerMapper.class);
            job.setCombinerClass(IntSumReducer.class);
            job.setReducerClass(IntSumReducer.class);
            job.setOutputKeyClass(Text.class);
            job.setOutputValueClass(IntWritable.class);
            for (int i = 0; i < otherArgs.length - 1; ++i) {
                FileInputFormat.addInputPath(job, new Path(otherArgs[i]));
            }
            FileOutputFormat.setOutputPath(job,
                    new Path(otherArgs[otherArgs.length - 1]));
            System.exit(job.waitForCompletion(true) ? 0 : 1);
        }
    }
    
    

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