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package mobvista.dmp.datasource.gender;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
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;
public class CalcPackageDictMR {
/**
* author:liushuai
* data:2017-01-13
*
* @throws InterruptedException
* @throws IOException
* @throws ClassNotFoundException desc :对CalcPackageGenderMR得到的结果进行数据清洗，留下符合条件的数据并添加标签tag
*/
public static void main(String[] args) throws ClassNotFoundException, IOException, InterruptedException {
Configuration conf = new Configuration();
conf.set("mapreduce.map.speculative", "true");
conf.set("mapreduce.reduce.speculative", "true");
conf.set("mapreduce.task.io.sort.mb", "500");
conf.set("mapreduce.reduce.java.opts", "-Xmx1536m");
conf.set("mapreduce.reduce.memory.mb", "2048");
conf.set("mapreduce.reduce.shuffle.parallelcopies", "50");
String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
conf.set("l_threshold", otherArgs[2]);
conf.set("h_threshold", otherArgs[3]);
conf.set("m_ratio", otherArgs[4]);
conf.set("f_ratio", otherArgs[5]);
Job job = Job.getInstance(conf, "CalcPackageDictMR");
job.setJarByClass(CalcPackageDictMR.class);
job.setMapperClass(CalcPackageDictMapper.class);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(NullWritable.class);
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(NullWritable.class);
FileInputFormat.addInputPath(job, new Path(otherArgs[0]));
FileOutputFormat.setOutputPath(job, new Path(otherArgs[1]));
System.exit(job.waitForCompletion(true) ? 0 : 1);
}
public static class CalcPackageDictMapper extends Mapper<LongWritable, Text, Text, NullWritable> {
Text outKey = new Text();
int lowThreshold;
int highThreshold;
double mRatio;
double fRatio;
public void setup(Context context) throws IOException, InterruptedException {
lowThreshold = Integer.parseInt(context.getConfiguration().get("l_threshold"));
highThreshold = Integer.parseInt(context.getConfiguration().get("h_threshold"));
mRatio = Double.parseDouble(context.getConfiguration().get("m_ratio"));
fRatio = Double.parseDouble(context.getConfiguration().get("f_ratio"));
}
public void map(LongWritable key, Text value, Context context) {
try {
String line = value.toString();
String[] fields = MRUtils.SPLITTER.split(line, -1);
String tag = "";
if (Double.parseDouble((fields[5])) == 0.0 || Integer.parseInt(fields[2]) < lowThreshold) {
return;
}
if (Integer.parseInt(fields[2]) >= highThreshold && (Double.parseDouble(fields[5]) >= mRatio
|| Double.parseDouble(fields[5]) <= fRatio)) {
tag = "confirm";
} else {
tag = "calc";
}
outKey.set(MRUtils.JOINER.join(fields[0], fields[5], tag));
context.write(outKey, NullWritable.get());
} catch (Exception e) {
return;
}
}
}
}