Hive基础(四十):Hive 实战(一)准备

1 需求描述

统计硅谷影音视频网站的常规指标,各种 TopN 指标: -- 统计视频观看数 Top10 -- 统计视频类别热度 Top10 -- 统计出视频观看数最高的 20 个视频的所属类别以及类别包含 Top20 视频的个数 -- 统计视频观看数 Top50 所关联视频的所属类别排序 -- 统计每个类别中的视频热度 Top10,以 Music 为例 -- 统计每个类别视频观看数 Top10 -- 统计上传视频最多的用户 Top10 以及他们上传的视频观看次数在前 20 的视频

2 数据结构

1)视频表 Hive基础(四十):Hive 实战(一)准备 2)用户表

Hive基础(四十):Hive 实战(一)准备

3 准备工作

3.1 准备表 1)需要准备的表 创建原始数据表:gulivideo_ori,gulivideo_user_ori, 创建最终表:gulivideo_orc,gulivideo_user_orc 2)创建原始数据表: (1)gulivideo_ori
create table gulivideo_ori(
 videoId string, 
 uploader string, 
 age int, 
 category array<string>, 
 length int, 
 views int, 
 rate float, 
 ratings int, 
 comments int,
 relatedId array<string>)
row format delimited fields terminated by "\t"
collection items terminated by "&"
stored as textfile;
(2)创建原始数据表: gulivideo_user_ori
create table gulivideo_user_ori(
 uploader string,
 videos int,
 friends int)
row format delimited 
fields terminated by "\t" 
stored as textfile;
2)创建 orc 存储格式带 snappy 压缩的表: (1)gulivideo_orc
create table gulivideo_orc(
 videoId string, 
 uploader string, 
 age int, 
 category array<string>, 
 length int, 
 views int, 
 rate float, 
 ratings int, 
 comments int,
 relatedId array<string>)
stored as orc
tblproperties("orc.compress"="SNAPPY");
(2)gulivideo_user_orc
create table gulivideo_user_orc(
 uploader string,
 videos int,
 friends int)
row format delimited 
fields terminated by "\t" 
stored as orc
tblproperties("orc.compress"="SNAPPY");
(3)向 ori 表插入数据
load data local inpath "/opt/module/data/video" into table gulivideo_ori;
load data local inpath "/opt/module/user" into table gulivideo_user_ori;
(4)向 orc 表插入数据
insert into table gulivideo_orc select * from gulivideo_ori;
insert into table gulivideo_user_orc select * from gulivideo_user_ori;
3.2 安装 Tez 引擎(了解)  

 

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