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package mobvista.prd.datasource.eggplants;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
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.Map;
/**
* Created by Administrator on 2017/5/3 0003.
*/
public class EggplantsAppCountryAllMR {
public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
Configuration conf = new Configuration();
String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
conf.set("mapreduce.reduce.memory.mb", "1280");
Job job = Job.getInstance(conf, "EggplantsAppCountryAllMR");
job.setJarByClass(EggplantsAppCountryAllMR.class);
FileOutputFormat.setCompressOutput(job, true);
FileOutputFormat.setOutputCompressorClass(job, GzipCodec.class);
job.setMapperClass(EggplantsMapper.class);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(Text.class);
// job.setCombinerClass(EggplantsCombiner.class);
job.setReducerClass(EggplantsCombiner.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 EggplantsMapper extends Mapper<LongWritable, Text, Text, Text> {
Map<String,String> packageMap = Maps.newHashMap();
Text outKey = new Text();
Text outValue = new Text();
// Set<String> matchingSet = Sets.newHashSet("com.toi.reader.activities","com.newsdog","com.eterno","com.uc.iflow","id.co.babe","com.jakarta.baca","org.detikcom.rss","com.snapdeal.main","com.flipkart.android","com.lazada.android","com.zalora.android","com.goibibo","com.makemytrip","com.gojek.app","com.traveloka.android","id785385147","id624639017","id742044692","id297606951","id368677368","id539179365","id944875099","id898244857");
// public void setup(Context context) throws IOException, InterruptedException {
// //读取CalcPackageDictMR的结果，放入Map中
// String path = context.getConfiguration().get("file");
// FileSystem fileSystem = FileSystem.get(URI.create(path), context.getConfiguration());
// BufferedReader reader = new BufferedReader(new InputStreamReader(fileSystem.open(new Path(path))));
// String readLine = "";
// while ((readLine = reader.readLine()) != null) {
// String[] arr = MRUtils.SPLITTER.split(readLine, -1);
// String packageName = arr[3].replace("[","").replace("]","").replace("\"","");
// packageMap.put(arr[0] + "\t" + arr[1], packageName);
// }
// reader.close();
// }
public void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {
String line = value.toString();
String[] fields = line.split("\t",-1);
if (fields.length == 4) {
outKey.set(fields[0] + "\t" + fields[1]);
String packageName = fields[3].replace("[","").replace("]","").replace("\"","");
String[] arr = packageName.split(",",-1);
for (String pakName : arr) {
// if (matchingSet.contains(pakName)) {
outValue.set(pakName);
context.write(outKey,outValue);
// }
}
} else if (fields.length > 5) {
outKey.set(fields[0] + "\t" + fields[1]);
outValue.set(fields[9]);
context.write(outKey, outValue);
}
}
}
public static class EggplantsReducer extends Reducer<Text, Text, Text, Text> {
Text outKey = new Text();
Text outValue = new Text();
int all = 0;
public void reduce(Text key, Iterable<Text> values, Context context) throws IOException, InterruptedException {
for (Text val:values) {
all++;
}
outValue.set(all+"");
context.write(key, outValue);
}
}
public static class EggplantsCombiner extends Reducer<Text, Text, Text, Text> {
Text outKey = new Text();
Text outValue = new Text();
int all = 0;
public void reduce(Text key, Iterable<Text> values, Context context) throws IOException, InterruptedException {
List<String> list = Lists.newArrayList();
String country = "";
for (Text val:values) {
if (val.toString().length() == 2) {
country = val.toString();
continue;
}
list.add(val.toString());
}
if (country.equals("")) {
return;
}
for (String pakName : list) {
outKey.set(country+"\t"+pakName);
outValue.set("1");
context.write(outKey, outValue);
}
}
}
}