目录
目标需求
数据内容
基于Hive数仓实现需求开发
1.建库建表、加载数据
2.ETL数据清洗
3需求指标统计
目标需求
基于Hadoop和hive实现聊天数据统计分析,构建聊天数据分析报表
1.统计今日总消息量
2.统计今日每小时消息量,发送和接收用户数
3.统计今日各地区发送消息数据量
4.统计今日发送消息和接收消息的用户数
5.统计发送消息最多的top10用户
6.统计接收消息最多的top10用户
7.统计发送人的手机型号分部情况
8.统计发送人的设备操作系统分布情况
数据内容
数据来源:聊天业务系统中导出的2021年11月01日的一天24小时的用户聊天数据,以TSV文本形式存储在文件中
数据大小:两个文件共14万条
列分隔符:制表符‘\t’
数据字典及样列数据:
基于Hive数仓实现需求开发
1.建库建表、加载数据
--------------1、建库---------------------如果数据库已存在就删除
drop database if exists db_msg cascade;
--创建数据库
create database db_msg;
--切换数据库
use db_msg;
--------------2、建表-------------------
--如果表已存在就删除
drop table if exists db_msg.tb_msg_source;
--建表
create table db_msg.tb_msg_source(msg_time string comment "消息发送时间", sender_name string comment "发送人昵称", sender_account string comment "发送人账号", sender_sex string comment "发送人性别", sender_ip string comment "发送人ip地址", sender_os string comment "发送人操作系统", sender_phonetype string comment "发送人手机型号", sender_network string comment "发送人网络类型", sender_gps string comment "发送人的GPS定位", receiver_name string comment "接收人昵称", receiver_ip string comment "接收人IP", receiver_account string comment "接收人账号", receiver_os string comment "接收人操作系统", receiver_phonetype string comment "接收人手机型号", receiver_network string comment "接收人网络类型", receiver_gps string comment "接收人的GPS定位", receiver_sex string comment "接收人性别", msg_type string comment "消息类型", distance string comment "双方距离", message string comment "消息内容"
)
--指定分隔符为制表符
row format delimited fields terminated by '\t';--------------3、加载数据-------------------
--上传数据文件到node1服务器本地文件系统(HS2服务所在机器)
--shell: mkdir -p /root/hivedata--加载数据到表中
load data local inpath '/root/hivedata/data1.tsv' into table db_msg.tb_msg_source;
load data local inpath '/root/hivedata/data2.tsv' into table db_msg.tb_msg_source;--查询表 验证数据文件是否映射成功
select * from tb_msg_source limit 10;--统计行数
select count(*) as cnt from tb_msg_source;
2.ETL数据清洗
--------------4、ETL数据清洗-------------------
--问题1:当前数据中,有一些数据的字段为空,不是合法数据
selectmsg_time,sender_name,sender_gps
from db_msg.tb_msg_source
where length(sender_gps) = 0
limit 10;--问题2:需求中,需要统计每天、每个小时的消息量,但是数据中没有天和小时字段,只有整体时间字段,不好处理
selectmsg_time
from db_msg.tb_msg_source
limit 10;--问题3:需求中,需要对经度和维度构建地区的可视化地图,但是数据中GPS经纬度为一个字段,不好处理
selectsender_gps
from db_msg.tb_msg_source
limit 10;--ETL实现
--如果表已存在就删除
drop table if exists db_msg.tb_msg_etl;
--将Select语句的结果保存到新表中
create table db_msg.tb_msg_etl as
select*,substr(msg_time,0,10) as dayinfo, --获取天substr(msg_time,12,2) as hourinfo, --获取小时split(sender_gps,",")[0] as sender_lng, --提取经度split(sender_gps,",")[1] as sender_lat --提取纬度
from db_msg.tb_msg_source
--过滤字段为空的数据
where length(sender_gps) > 0 ;--验证ETL结果
selectmsg_time,dayinfo,hourinfo,sender_gps,sender_lng,sender_lat
from db_msg.tb_msg_etl
limit 10;
3需求指标统计
--------------5、需求指标统计分析-------------------
--需求:统计今日总消息量
create table if not exists tb_rs_total_msg_cnt
comment "今日消息总量"
as
selectdayinfo,count(*) as total_msg_cnt
from db_msg.tb_msg_etl
group by dayinfo;select * from tb_rs_total_msg_cnt;--结果验证--需求:统计今日每小时消息量、发送和接收用户数
create table if not exists tb_rs_hour_msg_cnt
comment "每小时消息量趋势"
as
selectdayinfo,hourinfo,count(*) as total_msg_cnt,count(distinct sender_account) as sender_usr_cnt,count(distinct receiver_account) as receiver_usr_cnt
from db_msg.tb_msg_etl
group by dayinfo,hourinfo;select * from tb_rs_hour_msg_cnt;--结果验证--需求:统计今日各地区发送消息数据量
create table if not exists tb_rs_loc_cnt
comment "今日各地区发送消息总量"
as
selectdayinfo,sender_gps,cast(sender_lng as double) as longitude,cast(sender_lat as double) as latitude,count(*) as total_msg_cnt
from db_msg.tb_msg_etl
group by dayinfo,sender_gps,sender_lng,sender_lat;select * from tb_rs_loc_cnt; --结果验证--需求:统计今日发送消息和接收消息的用户数
create table if not exists tb_rs_usr_cnt
comment "今日发送消息人数、接受消息人数"
as
selectdayinfo,count(distinct sender_account) as sender_usr_cnt,count(distinct receiver_account) as receiver_usr_cnt
from db_msg.tb_msg_etl
group by dayinfo;select * from tb_rs_usr_cnt; --结果验证--需求:统计今日发送消息最多的Top10用户
create table if not exists tb_rs_susr_top10
comment "发送消息条数最多的Top10用户"
as
selectdayinfo,sender_name as username,count(*) as sender_msg_cnt
from db_msg.tb_msg_etl
group by dayinfo,sender_name
order by sender_msg_cnt desc
limit 10;select * from tb_rs_susr_top10; --结果验证--需求:统计今日接收消息最多的Top10用户
create table if not exists tb_rs_rusr_top10
comment "接受消息条数最多的Top10用户"
as
selectdayinfo,receiver_name as username,count(*) as receiver_msg_cnt
from db_msg.tb_msg_etl
group by dayinfo,receiver_name
order by receiver_msg_cnt desc
limit 10;select * from tb_rs_rusr_top10; --结果验证--需求:统计发送人的手机型号分布情况
create table if not exists tb_rs_sender_phone
comment "发送人的手机型号分布"
as
selectdayinfo,sender_phonetype,count(distinct sender_account) as cnt
from tb_msg_etl
group by dayinfo,sender_phonetype;select * from tb_rs_sender_phone; --结果验证--需求:统计发送人的设备操作系统分布情况
create table if not exists tb_rs_sender_os
comment "发送人的OS分布"
as
selectdayinfo,sender_os,count(distinct sender_account) as cnt
from tb_msg_etl
group by dayinfo,sender_os;select * from tb_rs_sender_os; --结果验证