课堂测试-数据清洗

题目:

Result文件数据说明:

Ip106.39.41.166,(城市)

Date10/Nov/2016:00:01:02 +0800,(日期)

Day10,(天数)

Traffic: 54 ,(流量)

Type: video,(类型:视频video或文章article

Id: 8701(视频或者文章的id

测试要求:

1、  数据清洗:按照进行数据清洗,并将清洗后的数据导入hive数据库中

两阶段数据清洗:

1)第一阶段:把需要的信息从原始日志中提取出来

ip:    199.30.25.88

time:  10/Nov/2016:00:01:03 +0800

traffic:  62

文章: article/11325

视频: video/3235

1 2 4 5 6

2)第二阶段:根据提取出来的信息做精细化操作

ip--->城市 cityIP

date--> time:2016-11-10 00:01:03

day: 10

traffic:62

type:article/video

id:11325

3hive数据库表结构:

create table data(  ip string,  time string , day string, traffic bigint,

type string, id   string )

2、数据处理:

·统计最受欢迎的视频/文章的Top10访问次数 (video/article

·按照地市统计最受欢迎的Top10课程 (ip

·按照流量统计最受欢迎的Top10课程 (traffic

3、数据可视化:将统计结果倒入MySql数据库中,通过图形化展示的方式展现出来。

完成情况:

目前完成了第一步

数据清洗代码:

 

 1 import java.io.IOException;
 2 import java.text.SimpleDateFormat;
 3 import java.util.Date;
 4 import java.util.Locale;
 5 
 6 import org.apache.hadoop.conf.Configuration;
 7 import org.apache.hadoop.fs.Path;
 8 import org.apache.hadoop.io.Text;
 9 import org.apache.hadoop.mapreduce.Job;
10 import org.apache.hadoop.mapreduce.Mapper;
11 import org.apache.hadoop.mapreduce.Reducer;
12 import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
13 import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
14 import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
15 import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
16 import text.te.Map.Reduce;
17 
18 
19 public class te {
20     
21     public static class Map extends Mapper<Object,Text,Text,Text>{
22           public static final SimpleDateFormat FORMAT = new SimpleDateFormat("d/MMM/yyyy:HH:mm:ss", Locale.ENGLISH); //原时间格式
23         public static final SimpleDateFormat dateformat1 = new SimpleDateFormat("yyyy-MM-dd-HH:mm:ss");//现时间格式
24         private  static Date parseDateFormat(String string) {         //转换时间格式
25             Date parse = null;
26             try {
27                 parse = FORMAT.parse(string);
28             } catch (Exception e) {
29                 e.printStackTrace();
30             }
31             return parse;
32         }
33         private static Text newKey = new Text();
34         private static Text newvalue = new Text();
35         public void map(Object key,Text value,Context context) throws IOException, InterruptedException{
36         String line = value.toString();
37         System.out.println(line);
38         String arr[] = line.split(",");
39         newKey.set(arr[0]);
40         final int first = arr[1].indexOf("");
41         final int last = arr[1].indexOf(" +0800");
42         String time = arr[1].substring(first + 1, last).trim();
43         Date date = parseDateFormat(time);
44        arr[1] = dateformat1.format(date);
45         newvalue.set(arr[1]+" "+arr[2]+" "+arr[3]+" "+arr[4]+" "+arr[5]);
46         context.write(newKey,newvalue);
47         }
48         
49         public static class Reduce extends Reducer<Text, Text, Text, Text> {
50             protected void reduce(Text key, Iterable<Text> values, Context context)throws IOException, InterruptedException {
51                 for(Text text : values){
52                     context.write(key,text);
53                 }
54             }
55         }
56     }
57     public static void main(String[] args) throws IOException, ClassNotFoundException, InterruptedException {
58         Configuration conf = new Configuration();
59         System.out.println("start");
60         Job job=Job.getInstance(conf); 
61         job.setJobName("filter");
62         job.setJarByClass(te.class);
63         job.setMapperClass(Map.class);
64         job.setReducerClass(Reduce.class);
65         job.setOutputKeyClass(Text.class);
66         job.setOutputValueClass(Text.class);        
67         job.setInputFormatClass(TextInputFormat.class);
68         job.setOutputFormatClass(TextOutputFormat.class);
69         Path in=new Path("hdfs://localhost:9000/text/in/result");
70         Path out=new Path("hdfs://localhost:9000/text/out");
71         FileInputFormat.addInputPath(job, in);
72         FileOutputFormat.setOutputPath(job, out);
73         boolean flag = job.waitForCompletion(true);
74         System.out.println(flag);
75         System.exit(flag? 0 : 1);
76     }
77 }

 

    导入hive语句:

CREATE EXTERNAL TABLE data(ip varchar(200),tme varchar(200),day varchar(200),traffic varchar(200),type varchar(200),id varchar(200)) COMMENT 'Welcome to xmu dblab!' ROW FORMAT DELIMITED FIELDS TERMINATED BY ' ' STORED AS TEXTFILE LOCATION '/bigdatacase/dataset';
OK

    结果截图:

猜你喜欢

转载自www.cnblogs.com/123456www/p/11851624.html