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package mobvista.dmp.datasource.age.mapreduce;
import com.google.common.collect.Maps;
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.NullWritable;
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 org.apache.orc.mapred.OrcStruct;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.type.JavaType;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Created by liushuai on 2017/2/17 0017.
*/
public class DmpYearMRV2 {
public enum Fields {
DEVICE_ID("device_id", 0),
DEVICE_TYPE("device_type", 1),
PACKAGE_NAMES("package_names", 2),
AGE("age", 3),
TAG("tag", 4),
UPDATE_DATE("update_date", 5);
private String name;
private int idx;
Fields(String name, int idx) {
this.name = name;
this.idx = idx;
}
public String getName() {
return name;
}
public int getIdx() {
return idx;
}
}
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.reduce.memory.mb", "1536");
String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
Job job = Job.getInstance(conf, "DmpYearMRV2");
job.setNumReduceTasks(1);
job.setJarByClass(DmpYearMRV2.class);
job.setMapperClass(DmpYearOrcMapper.class);
job.setMapOutputKeyClass(Text.class);
job.setMapOutputValueClass(NullWritable.class);
job.setReducerClass(DmpYearReducer.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 DmpYearOrcMapper extends Mapper<NullWritable, OrcStruct, Text, NullWritable> {
Text outKey = new Text();
ObjectMapper objectMapper = new ObjectMapper(); //转换器
JavaType mapType = objectMapper.getTypeFactory().constructMapType(Map.class, String.class, Map.class);
int yes = 0;
int no = 0;
int other = 0;
int valid = 0;
int un = 0;
Long una = 0L;
Map<String, Integer> st = Maps.newHashMap();
Long allNum = 0L;
public void map(NullWritable key, OrcStruct value, Context context) throws IOException, InterruptedException {
if (value.getNumFields() != 6) {
return;
}
// String line = value.toString();
// String[] fields = MRUtils.SPLITTER.split(line, -1);
// if (fields.length != 5) {
// return;
// }
String ages = value.getFieldValue(Fields.AGE.getIdx()).toString();
String tag = value.getFieldValue(Fields.TAG.getIdx()).toString();
String age;
String maxAge;
allNum = allNum + 1;
Map<String, Map> ageMap = objectMapper.readValue(ages, mapType);
Map<String, String> ageSource = ageMap.get("age_and_source");
Map<String, Double> ageProportion = ageMap.get("age_and_proportion");
List maxAgeList = getMaxRatio(ageProportion);
maxAge = (String) maxAgeList.get(0);
double maxRatio = (Double) maxAgeList.get(1);
if (!ageSource.containsKey("null")) {
if (tag.equals("unbelievable")) {
un += 1;
una += 1;
return;
}
if (tag.equals("unknown")) {
no += 1;
other += 1;
return;
}
if (maxRatio < 0.5) {
un += 1;
return;
}
Set<String> ageSet = ageSource.keySet();
for (String item : ageSet) {
age = Util.colonSplit.split(item, -1)[0];
if (maxAge.equals(age)) {
yes += 1;
break;
} else {
no += 1;
break;
}
}
}
if (tag.equals("unbelievable")) {
una += 1;
return;
}
if (tag.equals("unknown")) {
other += 1;
return;
}
if (maxRatio < 0.5) {
una += 1;
return;
}
Integer sum = st.get(maxAge);
if (sum == null) {
sum = 0;
}
st.put(maxAge, sum + 1);
valid += 1;
}
public void cleanup(Context context) throws IOException, InterruptedException {
StringBuilder values = new StringBuilder();
values.append(valid);
for (Map.Entry<String, Integer> entry : st.entrySet()) {
values.append("|");
values.append(entry.getKey());
values.append(":");
values.append(entry.getValue());
}
outKey.set(MRUtils.JOINER.join(yes, no, un, allNum, other, una, values
));
context.write(outKey, NullWritable.get());
}
}
public static class DmpYearReducer extends Reducer<Text, NullWritable, Text, NullWritable> {
Text outKey = new Text();
int yes = 0;
int no = 0;
int other = 0;
int valid = 0;
int validAll = 0;
int num = 0;
int un = 0;
Long una = 0L;
Map<String, Integer> st = Maps.newHashMap();
Long allNum = 0L;
double ratio = 0.0;
double recall = 0.0;
public void reduce(Text key, Iterable<NullWritable> values, Context context)
throws IOException, InterruptedException {
String line = key.toString();
String[] fields = MRUtils.SPLITTER.split(line, -1);
yes = yes + Integer.parseInt(fields[0]);
no = no + Integer.parseInt(fields[1]);
un = un + Integer.parseInt(fields[2]);
allNum = allNum + Long.parseLong(fields[3]);
other = other + Integer.parseInt(fields[4]);
una = una + Long.parseLong(fields[5]);
String[] arr = Util.verticalLine.split(fields[6], -1);
valid = valid + Integer.parseInt(arr[0]);
for (int i = 1; i < arr.length; i++) {
String[] item = Util.colonSplit.split(arr[i], -1);
String gen = item[0];
Integer sum = st.get(gen);
if (sum == null) {
sum = 0;
}
Integer part = Integer.parseInt(item[1]);
st.put(gen, sum + part);
validAll = validAll + part;
}
}
public void cleanup(Context context) throws IOException, InterruptedException {
StringBuilder value = new StringBuilder();
value.append(valid);
for (Map.Entry<String, Integer> entry : st.entrySet()) {
value.append("|");
value.append(entry.getKey());
value.append(":");
value.append(entry.getValue());
}
if (yes + no != 0) {
ratio = (double) yes / (yes + no);
}
if (allNum != 0) {
recall = (double) validAll / allNum;
}
outKey.set(MRUtils.JOINER.join(yes, no, un, ratio, allNum, recall, other, una, validAll, value));
context.write(outKey, NullWritable.get());
}
}
public static List getMaxRatio(Map<String, Double> ageMap) {
String maxAge = "";
double maxRatio = 0.0;
for (Map.Entry<String, Double> entry : ageMap.entrySet()) {
String ages = entry.getKey();
Double ratio = entry.getValue();
if (ages != null && !ages.equals("")) {
if (maxAge.length() == 0) {
maxAge = ages;
maxRatio = ratio;
} else if (maxRatio < ratio) {
maxAge = ages;
maxRatio = ratio;
}
}
}
List maxRatioList = new ArrayList<>();
maxRatioList.add(maxAge);
maxRatioList.add(maxRatio);
return maxRatioList;
}
}