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package mobvista.prd.datasource.country.interest.mapreduce;
import mobvista.dmp.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;
/**
* Created by Administrator on 2017/5/12 0012.
*/
public class CountryInterestMR {
public static void main(String[] args) throws InterruptedException, IOException, ClassNotFoundException {
Configuration conf = new Configuration();
conf.set("mapreduce.map.speculative", "true");
conf.set("mapreduce.reduce.speculative", "true");
conf.set("mapreduce.job.reduce.slowstart.completedmaps", "1.0");
conf.set("mapreduce.job.speculative.slowtaskthreshold", "1.0");
conf.set("mapreduce.reduce.memory.mb", "2250");
String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
Job job = Job.getInstance(conf, "CountryInterestMR");
FileOutputFormat.setCompressOutput(job, true);
FileOutputFormat.setOutputCompressorClass(job, GzipCodec.class);
job.setNumReduceTasks(Integer.parseInt(otherArgs[3]));
job.setJarByClass(CountryInterestMR.class);
job.setMapperClass(CountryInterestMapper.class);
job.setReducerClass(CountryInterestReducer.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 CountryInterestMapper 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 {
try {
String[] arr = MRUtils.SPLITTER.split(value.toString(), -1);
String inputFile = context.getConfiguration().get("map.input.file");
if (inputFile.contains("etl_dsp_request_daily")) { //dsp
outKey.set(MRUtils.JOINER.join(arr[0], arr[1]));//device_id,device_type
outValue.set(arr[3] + "\t" + "");//国家
context.write(outKey, outValue);
} else if (inputFile.contains("dm_interest_tag")) { //dm_interest_tag
outKey.set(MRUtils.JOINER.join(arr[0], arr[1]));//device_id,device_type
outValue.set(arr[3]);//兴趣
context.write(outKey, outValue);
} else if (inputFile.contains("etl_adn_sdk_request_daily")) { // M系统
outKey.set(MRUtils.JOINER.join(arr[0], arr[1]));//device_id,device_type
outValue.set(arr[2] + "\t" + "");//国家
context.write(outKey, outValue);
}
} catch (Exception e) {
return;
}
}
}
public static class CountryInterestReducer extends Reducer<Text, Text, Text, Text> {
Text outKey = new Text();
Text outValue = new Text();
public void reduce (Text key, Iterable<Text> values, Context context) throws IOException, InterruptedException {
String country = "";
String interest = "";
for (Text val : values) {
if (val.toString().contains("\t")) {
country = val.toString().split("\t",-1)[0];
} else {
interest = val.toString();
}
}
if (country.equals("")) {
return;
}
if (interest.equals("")) {
return;
}
outValue.set(MRUtils.JOINER.join(country,interest));
context.write(key, outValue);
}
}
}