DspJoinMMR.java

package mobvista.prd.datasource.source.mapreduce;

import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import mobvista.prd.datasource.table.MergeAppIDMR;
import mobvista.prd.datasource.util.MRUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.compress.GzipCodec;
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 java.io.IOException;
import java.util.List;
import java.util.Set;

/**
 * Created by Administrator on 2017/5/16 0016.
 * desc:合并dsp与m系统，输出交集
 */
public class DspJoinMMR {
    public static void main(String[] args) throws InterruptedException, IOException, ClassNotFoundException {
        Configuration conf = new Configuration();
        String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();

        Job job = Job.getInstance(conf, "dsp join M");

        job.setJarByClass(MergeAppIDMR.class);
        FileOutputFormat.setCompressOutput(job, true);
        FileOutputFormat.setOutputCompressorClass(job, GzipCodec.class);

        job.setMapperClass(DspJoinMMapper.class);
        job.setMapOutputKeyClass(Text.class);
        job.setMapOutputValueClass(Text.class);
        job.setReducerClass(DspJoinMReducer.class);
        job.setOutputKeyClass(Text.class);
        job.setOutputValueClass(Text.class);

        FileInputFormat.addInputPath(job, new Path(otherArgs[0]));
        FileInputFormat.addInputPath(job, new Path(otherArgs[1]));
        FileOutputFormat.setOutputPath(job, new Path(otherArgs[2]));

        System.exit(job.waitForCompletion(true) ? 0 : 1);

    }
    public static class DspJoinMMapper extends Mapper<LongWritable, Text, Text, Text> {
        Text outKey = new Text();
        Text outValue = new Text();
        public void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
            String line = value.toString();
            String[] fields = line.split("\t", -1);
            String inputFile = context.getConfiguration().get("map.input.file");
            if (inputFile.contains("etl_dsp_request_daily")){
                outValue.set(MRUtils.JOINER.join(fields[10] , "dsp系统", fields[3]));  //pkg_name,来源，国家
                outKey.set(MRUtils.JOINER.join(fields[0], fields[1]));//device_id,device_type
                context.write(outKey, outValue);
            } else if (inputFile.contains("etl_adn_sdk_request_daily") || inputFile.contains("etl_adn_sdk_req_3_day")) {
                outValue.set(MRUtils.JOINER.join(fields[3],"m系统", fields[2])); //pkg_name，来源，国家
                outKey.set(MRUtils.JOINER.join(fields[0], fields[1]));//device_id,device_type
                context.write(outKey, outValue);
            } else {
                return;
            }
        }
    }

    public static class DspJoinMReducer extends Reducer<Text, Text, Text, Text> {
        Text outKey = new Text();
        public void reduce(Text key, Iterable<Text> values, Context context) throws IOException, InterruptedException {
            Set<String> set = Sets.newHashSet();
            int dsp = 0;
            int m = 0;
            for (Text val : values) {
                String pkg = val.toString();
                if (pkg.contains("m系统")) {
                    m = 1;
                } else if (pkg.contains("dsp系统")) {
                    dsp = 1;
                }
                set.add(val.toString());
            }
            if (m == 1 && dsp == 1) {
                for (String packageNames : set) {
                    String[] array = packageNames.split("\t",-1);
                    String[] arr = array[0].replace("\"","").replace("[","").replace("]","").split(",",-1);
                    for (String pkgName : arr) {
                        outKey.set(pkgName + "\t" + array[1] + "\t" + array[2]);//pkg_name，来源，国家
                        context.write(key , outKey);
                    }
                }
            }
        }
    }
}