Hadoop大数据案例之搜狗五百万数据分析

朴灿烈づ我的快乐病毒、 2022-05-24 06:13 356阅读 0赞

最近使用了hadoop中的hive、mapreduce以及HBASE对网上的一个搜狗五百万的数进行了一个比较实际的数据分析，适合新手去练习，好处是在接触较大的数据流的时候能碰到平时接触不到的问题，通过这些问题能够对自己有一个较好的提升，为以后接触到实际的大数据项目打一些有效的基础。

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**数据源**：[https://download.csdn.net/download/leoe\_/10429414][https_download.csdn.net_download_leoe_10429414]  
**数据说明**：搜狗五百万数据，是经过处理后的搜狗搜索引擎生产数据，具有真实性，大数据性，能够较好的满足分布式计算应用开发课程设计的数据要求。  
**搜狗数据的格式**： 访问时间\\t用户ID\\t\[查询词\]\\t该URL在返回结果中的排名\\t用户点击的顺序号\\t用户点击的URL。  
其中，用户ID是根据用户使浏览器访问搜索引擎时的Cookie信息自动赋值，即同一次使用浏览器输入的不同查询对应一个用户ID。

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## 操作要求： ##

1.将原始数据加载到HDFS平台。  
2.将原始数据中的时间字段拆分并拼接，添加年、月、日、小时字段。  
3.将处理后的数据加载到HDFS平台。  
4.以下操作分别通过MR和Hive实现。

*  查询总条数
 *  非空查询条数
 *  无重复总条数
 *  独立UID总数
 *  查询频度排名（频度最高的前50词）
 *  查询次数大于2次的用户总数
 *  查询次数大于2次的用户占比
 *  Rank在10以内的点击次数占比
 *  直接输入URL查询的比例
 *  查询搜索过”仙剑奇侠传“的uid，并且次数大于3

5.将4每步骤生成的结果保存到HDFS中。  
6.将5生成的文件通过Java API方式导入到HBase（一张表）。  
7.通过HBase shell命令查询6导出的结果。

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## 源数据处理 ##

1.将原始数据加载到HDFS平台。

hadoop fs -put sogou.500w.utf8 /sogou/data

2.将原始数据中的时间字段拆分并拼接，添加年、月、日、小时字段。

bash sogou-log-extend.sh sogou.500w.utf8 sogou.500w.utf8.ext

其中`sogou-log-extend.sh`文件的内\#!/bin/bash

#infile=/root/file/sogou.500w.utf8
    infile=$1
    #outfile=/root/filesogou.500w.utf8.final
    outfile=$2
    awk -F '\t' '{print $0"\t"substr($1,0,5)"year\t"substr($1,5,2)"month\t"substr($1,7,2)"day\t"substr($1,8,2)"hour"}' $infile > $outfile

3.处理后的数据加载到HDFS平台。

hadoop fs -put sogou.500w.utf8.ext /sogou/data

--------------------

## Hive分析数据 ##

首先要先将数据导入到hive仓库中：

1.  查看数据库：`show databases`
2.  创建数据库: `create database sogou`
3.  使用数据库: `use sogou`
4.  创建sougou表：`Create table sougou(time string,uuid string,name string,num1 int,num2 int,url string) Row format delimited fields terminated by '\t';`
5.  加载数据到表里：`Load data local inpath 'sogou.500w.utf8' into table sougou;`
6.  查看表信息：`desc sogou;`  
    ![这里写图片描述][70]

--------------------

*  查询总条数  
    
    
     *  HQL：`select count(*) from sougou`
 *  非空查询条数  
    
    
     *  HQL：`select count(*) from sougou where name is not null and name !='';`
 *  无重复总条数  
    
    
     *  HQL：`select count(*) from (select * from sougou group by time,num1,num2,uuid,name,url having count(*)=1) a;`
 *  独立UID总数  
    
    
     *  HQL：`select count(distinct uuid) from sougou;`
 *  查询频度排名（频度最高的前50词）  
    
    
     *  HQL：`select name,count(*) as pd from sougou group by name order by pd desc limit 50;`
 *  查询次数大于2次的用户总数  
    
    
     *  HQL：`select count(a.uuid) from (select uuid,count(*) as cnt from sougou group by uuid having cnt > 2) a;`
 *  Rank在10以内的点击次数占比  
    
    
     *  HQL：`select count(*) from sougou where num1<11;`
 *  直接输入URL查询的比例  
    
    
     *  HQL：`select count(*) from sougou where url like "http://v.ku6.com/show/ZZoLCC-NMTue3NQE.html";`
 *  查询搜索过”仙剑奇侠传“的uid，并且次数大于3  
    
    
     *  HQL：`select uuid,count(*) as uu from sougou where name='仙剑奇侠传' group by uuid having uu>3;`

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## MapReduce分析数据 ##

**(1)查询总条数**

package com.hadoop;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.Path;
    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 java.io.IOException;
    
    public class MRCountAll {
        public static Integer i = 0;
        public static boolean flag = true;
    
        public static class CountAllMap extends Mapper<Object, Text, Text, Text> {
    
            @Override
            protected void map(Object key, Text value, Mapper<Object, Text, Text, Text>.Context context)
                    throws IOException, InterruptedException {
                i++;
            }
    
        }
    
        public static void  runcount(String Inputpath, String Outpath) {
            Configuration conf = new Configuration();
            conf.set("fs.defaultFS", "hdfs://192.168.136.100:9000");
            Job job = null;
            try {
                job = Job.getInstance(conf, "count");
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            job.setJarByClass(MRCountAll.class);
            job.setMapperClass(CountAllMap.class);
            job.setOutputKeyClass(Text.class);
            job.setOutputValueClass(Text.class);
    
            try {
                FileInputFormat.addInputPath(job, new Path(Inputpath));
            } catch (IllegalArgumentException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            FileOutputFormat.setOutputPath(job, new Path(Outpath));
    
            try {
                job.waitForCompletion(true);
            } catch (ClassNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    
        public static void main(String[] args) throws Exception {
            runcount("/sogou/data/sogou.500w.utf8", "/sogou/data/CountAll");
            System.out.println("总条数: " + i);
        }
    
    }

**(2)非空查询条数**

package com.hadoop;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.Path;
    import org.apache.hadoop.io.IntWritable;
    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 java.io.IOException;
    
    public class CountNotNull {
        public static String Str = "";
        public static int i = 0;
        public static boolean flag = true;
    
        public static class wyMap extends Mapper<Object, Text, Text, IntWritable> {
            @Override
            protected void map(Object key, Text value, Mapper<Object, Text, Text, IntWritable>.Context context)
                    throws IOException, InterruptedException {
                String[] values = value.toString().split("\t");
                if (!values[2].equals(null) && values[2] != "") {
                    context.write(new Text(values[1]), new IntWritable(1));
                    i++;
                }
            }
        }
    
    
    
        public static void run(String inputPath, String outputPath) {
            Configuration conf = new Configuration();
            conf.set("fs.defaultFS", "hdfs://192.168.136.100:9000");
    
            Job job = null;
            try {
                job = Job.getInstance(conf, "countnotnull");
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            assert job != null;
            job.setJarByClass(CountNotNull.class);
            job.setMapperClass(wyMap.class);
            //job.setReducerClass(wyReduce.class);
    
            job.setOutputKeyClass(Text.class);
            job.setOutputValueClass(IntWritable.class);
    
            try {
                FileInputFormat.addInputPath(job, new Path(inputPath));
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                FileOutputFormat.setOutputPath(job, new Path(outputPath));
                job.waitForCompletion(true);
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
    
        }
    
        public static void main(String[] args) {
            run("/sogou/data/sogou.500w.utf8", "/sogou/data/CountNotNull");
            System.out.println("非空条数: " + i);
        }
    
    }

**(3)无重复总条数**

package com.hadoop;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.Path;
    import org.apache.hadoop.io.IntWritable;
    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 java.io.File;
    import java.io.IOException;
    
    public class CountNotRepeat {
    
        public static int i = 0;
        public static class NotRepeatMap extends Mapper<Object , Text , Text, Text>{
            @Override
            protected void map(Object key, Text value, Mapper<Object, Text, Text, Text>.Context context) throws IOException, InterruptedException {
    
                String text = value.toString();
                String[] values = text.split("\t");
                String time = values[0];
                String uid = values[1];
                String name = values[2];
                String url = values[5];
                context.write(new Text(time+uid+name+url), new Text("1"));
    
            }
        }
    
        public static class NotRepeatReduc extends Reducer<Text , IntWritable, Text, IntWritable>{
            @Override
            protected void reduce(Text key, Iterable<IntWritable> values, Reducer<Text,IntWritable,Text,IntWritable>.Context context) throws IOException, InterruptedException {
                i++;
                context.write(new Text(key.toString()),new IntWritable(i));
            }
        }
    
        public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
            Configuration conf = new Configuration();
            conf.set("fs.defaultFS", "hdfs://192.168.136.100:9000");
    
            Job job = null;
            try {
                job = Job.getInstance(conf, "countnotnull");
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            assert job != null;
            job.setJarByClass(CountNotRepeat.class);
            job.setMapperClass(NotRepeatMap.class);
            job.setReducerClass(NotRepeatReduc.class);
    
            job.setOutputKeyClass(Text.class);
            job.setOutputValueClass(Text.class);
    
            try {
                FileInputFormat.addInputPath(job, new Path("/sogou/data/sogou.500w.utf8"));
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                FileOutputFormat.setOutputPath(job, new Path("/sogou/data/CountNotRepeat"));
                job.waitForCompletion(true);
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
    
            System.out.println("无重复总条数为: " + i);
    
        }
    }

**(4)独立UID总数**

package com.hadoop;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.Path;
    import org.apache.hadoop.io.IntWritable;
    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 java.io.IOException;
    
    public class CountNotMoreUid {
    
        public static int i = 0;
        public static class UidMap extends Mapper<Object , Text , Text, Text>{
            @Override
            protected void map(Object key, Text value, Mapper<Object, Text, Text, Text>.Context context) throws IOException, InterruptedException {
    
                String text = value.toString();
                String[] values = text.split("\t");
                String uid = values[1];
                context.write(new Text(uid), new Text("1"));
    
            }
        }
    
        public static class UidReduc extends Reducer<Text , IntWritable, Text, IntWritable>{
            @Override
            protected void reduce(Text key, Iterable<IntWritable> values, Reducer<Text,IntWritable,Text,IntWritable>.Context context) throws IOException, InterruptedException {
                i++;
                context.write(new Text(key.toString()),new IntWritable(i));
            }
        }
    
        public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
            Configuration conf = new Configuration();
            conf.set("fs.defaultFS", "hdfs://192.168.136.100:9000");
    
            Job job = null;
            try {
                job = Job.getInstance(conf, "countnotnull");
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            assert job != null;
            job.setJarByClass(CountNotNull.class);
            job.setMapperClass(UidMap.class);
            job.setReducerClass(UidReduc.class);
    
            job.setOutputKeyClass(Text.class);
            job.setOutputValueClass(Text.class);
    
            try {
                FileInputFormat.addInputPath(job, new Path("/sogou/data/sogou.500w.utf8"));
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                FileOutputFormat.setOutputPath(job, new Path("/sogou/data/CountNotMoreUid"));
                job.waitForCompletion(true);
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
    
            System.out.println("独立UID条数: " + i);
    
        }
    }

**(5)查询频度排名（频度最高的前50词）**

package com.hadoop;
    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.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 java.io.IOException;
    import java.util.TreeMap;
    
    
    public class CountTop50 {
    
        public static class TopMapper  extends Mapper<LongWritable, Text, Text, LongWritable>{
            Text text =new Text();
    
            @Override
            protected void map(LongWritable key, Text value,Context context)
                    throws IOException, InterruptedException {
                String[] line= value.toString().split("\t");
                String keys = line[2];
                text.set(keys);
                context.write(text,new LongWritable(1));
            }
        }
    
    
        public static class TopReducer extends Reducer< Text,LongWritable, Text, LongWritable>{
            Text text = new Text();
            TreeMap<Integer,String > map = new TreeMap<Integer,String>();
            @Override
            protected void reduce(Text key, Iterable<LongWritable> value, Context context)
                    throws IOException, InterruptedException {
                int sum=0;//key出现次数
                for (LongWritable ltext : value) {
                    sum+=ltext.get();
                }
                map.put(sum,key.toString());
                //去前50条数据
                if(map.size()>50){
                    map.remove(map.firstKey());
                }
            }
    
            @Override
            protected void cleanup(Context context)
                    throws IOException, InterruptedException {
                for(Integer count:map.keySet()){
                    context.write(new Text(map.get(count)), new LongWritable(count));
                }
            }
        }
    
    
    
        public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
            Configuration conf = new Configuration();
            conf.set("fs.defaultFS", "hdfs://192.168.136.100:9000");
    
            Job job = Job.getInstance(conf, "count");
            job.setJarByClass(CountTop50.class);
            job.setJobName("Five");
    
            job.setOutputKeyClass(Text.class);
            job.setOutputValueClass(LongWritable.class);
    
            job.setMapperClass(TopMapper.class);
            job.setReducerClass(TopReducer.class);
    
    
    
            FileInputFormat.addInputPath(job, new Path("/sogou/data/sogou.500w.utf8"));
            FileOutputFormat.setOutputPath(job, new Path("/sogou/data/CountTop50"));
    
            job.waitForCompletion(true);
        }
    
    
    
    
    }

**(6)查询次数大于2次的用户总数**

package com.hadoop;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.Path;
    import org.apache.hadoop.io.IntWritable;
    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 java.io.IOException;
    
    public class CountQueriesGreater2 { 
    
        public static int total = 0;
        public static class MyMaper extends Mapper<Object, Text, Text, IntWritable> { 
    
    
            protected void map(Object key, Text value, Mapper<Object, Text, Text, IntWritable>.Context context)
                    throws IOException, InterruptedException {
    
                String[] str = value.toString().split("\t");
                Text word;
                IntWritable one = new IntWritable(1);
                word = new Text(str[1]);
                context.write(word, one);
            }
    
        }
    
    
        public static class MyReducer extends Reducer<Text, IntWritable, Text, IntWritable> { 
            @Override
            protected void reduce(Text arg0, Iterable<IntWritable> arg1,
                                  Reducer<Text, IntWritable, Text, IntWritable>.Context arg2) throws IOException, InterruptedException {
                // arg0是一个单词 arg1是对应的次数
                int sum = 0;
                for (IntWritable i : arg1) {
                    sum += i.get();
                }
                if(sum>2){
                    total=total+1;
                }
                //arg2.write(arg0, new IntWritable(sum));
            }
    
        }
    
        public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
    
            Configuration conf = new Configuration();
            conf.set("fs.defaultFS", "hdfs://192.168.136.100:9000");
            // 1.实例化一个Job
            Job job = Job.getInstance(conf, "six");
            // 2.设置mapper类
            job.setMapperClass(MyMaper.class);
            // 3.设置Combiner类 不是必须的
            // job.setCombinerClass(MyReducer.class);
            // 4.设置Reducer类
            job.setReducerClass(MyReducer.class);
            // 5.设置输出key的数据类型
            job.setOutputKeyClass(Text.class);
            // 6.设置输出value的数据类型
            job.setOutputValueClass(IntWritable.class);
            // 设置通过哪个类查找job的Jar包
            job.setJarByClass(CountQueriesGreater2.class);
            // 7.设置输入路径
            FileInputFormat.addInputPath(job, new Path("/sogou/data/sogou.500w.utf8"));
            // 8.设置输出路径
            FileOutputFormat.setOutputPath(job, new Path("/sogou/data/CountQueriesGreater2"));
            // 9.执行该作业
            job.waitForCompletion(true);
            System.out.println("查询次数大于2次的用户总数：" + total + "条");
    
    
        }
    
    }

**(7)查询次数大于2次的用户占比**

package com.hadoop;
    
    
    
    import java.io.IOException;
    import java.util.StringTokenizer;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.Path;
    import org.apache.hadoop.io.IntWritable;
    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;
    
    public class CountQueriesGreaterPro { 
        /* * * InputFormat ->FileInputFormat(子类)-> TextInputFormat(子类) * 程序当中默认调用的就是TextInputFormat 1.验证数据路径是否合法 2.TextInputFormat默认读取数据，就是一行一行读取的 * * 开始执行map，一个map就是一个task（是一个Java进程，运行在JVM上的） * map执行完毕后，会执行combiner（可选项），对一个map中的重复单词进行合并，value是一个map中出现的相同单词次数。 * shuffle(partitioner分区，进行不同map的值并按key排序) * Reducer接收所有map数据，并将具有相同key的value值合并 * * OutputFormat ->FileOutputFormat(子类)->TextOutputFormat(子类) 1.验证数据路径是否合法 * 2.TextOutputFormat写入文件格式是 key + "\t" + value + "\n" */
    
        // Text是一个能够写入文件的Java String数据类型
        // IntWritable是能够写入文件的int数据类型
        // 头两个参数表示的是输入数据key和value的数据类型
        // 后两个数据表示的就是输出数据key和value的数据类型
        public static int total1 = 0;
        public static int total2 = 0;
        public static class MyMaper extends Mapper<Object, Text, Text, IntWritable> { 
    
            @Override
            // key是行地址
            // value是一行字符串
            protected void map(Object key, Text value, Mapper<Object, Text, Text, IntWritable>.Context context)
                    throws IOException, InterruptedException {
    
                total2++;
                String[] str = value.toString().split("\t");
                Text word;
                IntWritable one = new IntWritable(1);
                word = new Text(str[1]);
                context.write(word, one);
                // 执行完毕后就是一个单词 对应一个value(1)
            }
    
        }
    
        // 头两个参数表示的是输入数据key和value的数据类型
        // 后两个数据表示的就是输出数据key和value的数据类型
        public static class MyReducer extends Reducer<Text, IntWritable, Text, IntWritable> { 
    
            @Override
            protected void reduce(Text arg0, Iterable<IntWritable> arg1,
                                  Reducer<Text, IntWritable, Text, IntWritable>.Context arg2) throws IOException, InterruptedException {
    
                // arg0是一个单词 arg1是对应的次数
                int sum = 0;
                for (IntWritable i : arg1) {
                    sum += i.get();
                }
                if(sum>2){
                    total1++;
                }
                arg2.write(arg0, new IntWritable(sum));
            }
    
        }
    
        public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
            System.out.println("seven begin");
            Configuration conf = new Configuration();
            conf.set("fs.defaultFS", "hdfs://192.168.136.100:9000");
            // 1.实例化一个Job
            Job job = Job.getInstance(conf, "seven");
            // 2.设置mapper类
            job.setMapperClass(MyMaper.class);
            // 3.设置Combiner类 不是必须的
            // job.setCombinerClass(MyReducer.class);
            // 4.设置Reducer类
            job.setReducerClass(MyReducer.class);
            // 5.设置输出key的数据类型
            job.setOutputKeyClass(Text.class);
            // 6.设置输出value的数据类型
            job.setOutputValueClass(IntWritable.class);
            // 设置通过哪个类查找job的Jar包
            job.setJarByClass(CountQueriesGreaterPro.class);
            // 7.设置输入路径
            FileInputFormat.addInputPath(job, new Path("/sogou/data/sogou.500w.utf8"));
            // 8.设置输出路径
            FileOutputFormat.setOutputPath(job, new Path("/sogou/data/CountQueriesGreaterPro"));
            // 9.执行该作业
            job.waitForCompletion(true);
            System.out.println("total1="+total1+"\ttotal2="+total2);
            float percentage = (float)total1/(float)total2;
            System.out.println("查询次数大于2次的用户占比为：" + percentage*100+"%");
            System.out.println("over");
    
        }
    
    }

**(8)Rank在10以内的点击次数占比**

package com.hadoop;
    
    import java.io.IOException;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.Path;
    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;
    
    public class CountRank {
        public static int sum1 = 0;
        public static int sum2 = 0;
    
        public static class MyMapper extends Mapper<Object, Text, Text, Text> {
    
            @Override
            protected void map(Object key, Text value, Mapper<Object, Text, Text, Text>.Context context)
                    throws IOException, InterruptedException {
                sum2++;
                String[] str = value.toString().split("\t");
                int rank = Integer.parseInt(str[3]);
                if(rank<11)
                {
                    sum1=sum1+1;
    
                }
            }
    
        }
    
        public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
            Configuration conf = new Configuration();
            conf.set("fs.defaultFS", "hdfs://192.168.136.100:9000");
            Job job = Job.getInstance(conf, "eight");
            job.setMapperClass(MyMapper.class);
    
            job.setOutputKeyClass(Text.class);
    
            job.setOutputValueClass(Text.class);
    
            job.setJarByClass(CountRank.class);
    
            FileInputFormat.addInputPath(job, new Path("/sogou/data/sogou.500w.utf8"));
    
            FileOutputFormat.setOutputPath(job, new Path("/sogou/data/CountRank"));
            job.waitForCompletion(true);
            System.out.println("sum1="+sum1+"\tsum2="+sum2);
            float percentage = (float)sum1/(float)sum2;
            System.out.println("Rank在10以内的点击次数占比：" +percentage*100+"%");
    
        }
    
    }

**(9)直接输入URL查询的比例**

package com.hadoop;
    
    
    import java.io.IOException;
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.Path;
    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;
    
    public class CountURL {
        public static int sum1 = 0;
        public static int sum2 = 0;
    
        public static class MyMapper extends Mapper<Object, Text, Text, Text> {
    
            @Override
            protected void map(Object key, Text value, Mapper<Object, Text, Text, Text>.Context context)
                    throws IOException, InterruptedException {
                String[] str = value.toString().split("\t");
                Pattern p = Pattern.compile("www");
                Matcher matcher = p.matcher(str[2]);
                matcher.find();
                try {
                    if(matcher.group()!=null)
                        sum1++;
                    sum2++;
                } catch (Exception e) {
                    sum2++;
                }
    
            }
    
        }
    
        public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
    
            Configuration conf = new Configuration();
            conf.set("fs.defaultFS", "hdfs://192.168.136.100:9000");
            Job job = Job.getInstance(conf, "nine");
            job.setMapperClass(MyMapper.class);
            job.setOutputKeyClass(Text.class);
            job.setOutputValueClass(Text.class);
            job.setJarByClass(CountURL.class);
            FileInputFormat.addInputPath(job, new Path("/sogou/data/sogou.500w.utf8"));
            FileOutputFormat.setOutputPath(job, new Path("/sogou/data/CountURL"));
            job.waitForCompletion(true);
            System.out.println("sum1="+sum1+"\tsum2="+sum2);
            float percentage = (float)sum1/(float)sum2;
            System.out.println("直接用url'%www%'查询的用户占比：" +percentage*100+"%");
    
        }
    
    }

**(10)查询搜索过”仙剑奇侠传“的uid，并且次数大于3**

package com.hadoop;
    
    
    import java.io.IOException;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.fs.Path;
    import org.apache.hadoop.io.IntWritable;
    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;
    
    
    
    public class CountUidGreater3 {
        public static String Str="";
        public static int i=0;
        public static class Map extends Mapper<Object, Text, Text, IntWritable>{
            @Override
            protected void map(Object key, Text value, Mapper<Object, Text, Text, IntWritable>.Context context)
                    throws IOException, InterruptedException {
                String []values=value.toString().split("\t");
                String pattern="仙剑奇侠传";
                if(values[2].equals(pattern)){
                    context.write(new Text(values[1]), new IntWritable(1));
                }
            }
        }
        public static class Reduce extends Reducer<Text, IntWritable, Text, IntWritable>{
            @Override
            protected void reduce(Text key, Iterable<IntWritable> value,
                                  Reducer<Text, IntWritable, Text, IntWritable>.Context context) throws IOException, InterruptedException {
    
                int sum=0;
                for(IntWritable v:value){
                    sum=sum+v.get();
                }
                if(sum>3){
                    Str=Str+key.toString()+"\n";
                    i++;
                }
    
            }
    
        }
    
    
        public static void main(String[] args) {
            Configuration conf=new Configuration();
            conf.set("fs.defaultFS", "hdfs://192.168.136.100:9000");
    
            Job job = null;
            try {
                job = Job.getInstance(conf, "count");
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            job.setJarByClass(CountUidGreater3.class);
            job.setMapperClass(Map.class);
            job.setReducerClass(Reduce.class);
    
            job.setOutputKeyClass(Text.class);
            job.setOutputValueClass(IntWritable.class);
    
            try {
                FileInputFormat.addInputPath(job, new Path("/sogou/data/sogou.500w.utf8"));
            } catch (IllegalArgumentException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
    
            try {
                FileOutputFormat.setOutputPath(job, new Path("/sogou/data/CountUidGreater3"));
                job.waitForCompletion(true);
            } catch (ClassNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            System.out.println("i: "+i);
            System.out.println(Str);
        }
    }

--------------------

**5.将4每步骤生成的结果保存到HDFS中。**  
在第四步中的每个HQL前面加上：Insert overwrite directory ‘位置’

eg:Insert overwrite directory '/sogou/data/1' Select count(*) from sougou;

**6.将5生成的文件通过Java API方式导入到HBase（一张表）。**

package com.hadoop;
    
    import org.apache.hadoop.conf.Configuration;
    import org.apache.hadoop.hbase.HBaseConfiguration;
    import org.apache.hadoop.hbase.client.Mutation;
    import org.apache.hadoop.hbase.client.Put;
    import org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil;
    import org.apache.hadoop.hbase.mapreduce.TableOutputFormat;
    import org.apache.hadoop.hbase.mapreduce.TableReducer;
    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.input.TextInputFormat;
    
    import java.io.IOException;
    
    public class HBaseImport{
    
        // reduce输出的表名
        private static String tableName = "test";
        // 初始化连接
        static Configuration conf = null;
        static {
            conf = HBaseConfiguration.create();
            conf.set("hbase.rootdir", "hdfs://192.168.136.100:9000/hbase");
            conf.set("hbase.master", "hdfs://192.168.136.100:60000");
            conf.set("hbase.zookeeper.property.clientPort", "2181");
            conf.set("hbase.zookeeper.quorum", "master,slave1,slave2");
            conf.set(TableOutputFormat.OUTPUT_TABLE, tableName);
        }
    
        public static class BatchMapper extends
                Mapper<LongWritable, Text, LongWritable, Text> {
            protected void map(LongWritable key, Text value,
                               Mapper<LongWritable, Text, LongWritable, Text>.Context context)
                    throws IOException, InterruptedException {
                String line = value.toString();
                Text v2s = new Text();
                v2s.set(line);
                context.write(key, v2s);
            }
        }
    
        public static class BatchReducer extends
                TableReducer<LongWritable, Text, NullWritable> {
            private String family = "info";
    
            @Override
            protected void reduce(
                    LongWritable arg0,
                    Iterable<Text> v2s,
                    Reducer<LongWritable, Text, NullWritable, Mutation>.Context context)
                    throws IOException, InterruptedException {
                for (Text v2 : v2s) {
                    String[] splited = v2.toString().split("\t");
                    String rowKey = splited[0];
                    Put put = new Put(rowKey.getBytes());
                    put.add(family.getBytes(), "raw".getBytes(), v2.toString()
                            .getBytes());
                    context.write(NullWritable.get(), put);
                }
            }
        }
    
        public static void imputil(String str) throws IOException, ClassNotFoundException,
                InterruptedException {
            Job job = Job.getInstance(conf, HBaseImport.class.getSimpleName());
            TableMapReduceUtil.addDependencyJars(job);
            job.setJarByClass(HBaseImport.class);
            FileInputFormat.setInputPaths(job,str);
            job.setInputFormatClass(TextInputFormat.class);
            job.setMapperClass(BatchMapper.class);
            job.setMapOutputKeyClass(LongWritable.class);
            job.setMapOutputValueClass(Text.class);
            job.setReducerClass(BatchReducer.class);
            job.setOutputFormatClass(TableOutputFormat.class);
            job.waitForCompletion(true);
        }
    
        public static void main(String[] args) throws ClassNotFoundException, IOException, InterruptedException {
            String[] str={
                    "hdfs://192.168.136.100:9000/sogou/data/1/000000_0",
                    "hdfs://192.168.136.100:9000/sogou/data/2/000000_0",
                    "hdfs://192.168.136.100:9000/sogou/data/3/000000_0",
                    "hdfs://192.168.136.100:9000/sogou/data/4/000000_0",
                    "hdfs://192.168.136.100:9000/sogou/data/5/000000_0",
                    "hdfs://192.168.136.100:9000/sogou/data/6/000000_0",
                    "hdfs://192.168.136.100:9000/sogou/data/9/000000_0",
                    "hdfs://192.168.136.100:9000/sogou/data/10/000000_0"
                    };
            for (String stri:str){
                imputil(stri);
            }
        }
    }

**7.通过HBase shell命令查询6导出的结果。**  
命令：scan ‘test’  
![这里写图片描述][70 1]

[https_download.csdn.net_download_leoe_10429414]: https://download.csdn.net/download/leoe_/10429414
[70]: /images/20220524/f7fcf4f9e4d14ec9b7c2c01590b6e192.png
[70 1]: /images/20220524/9cfedce1861a4ecda16b2994af7ddac2.png