一、留存会员
### --- 留存会员
~~~ 留存会员与留存率：某段时间的新增会员，经过一段时间后，仍继续使用应用认为是
~~~ 留存会员；这部分会员占当时新增会员的比例为留存率。
~~~ 需求：1日、2日、3日的会员留存数和会员留存率
~~~ 10W新会员：dws_member_add_day（dt=08-01）明细
~~~ 3W：特点 在1号是新会员，在2日启动了（2日的启动日志）
~~~ dws_member_start_day30 | 31 | 1 | 2 | |
10W新会员 | 3W | 1日留存数 | ||
20W | 5W | 2日留存数 | ||
30W | 4W | 日留存数 |
二、留存会员计算：创建DWS层表
### --- 创建DWS层表
~~~ # 语法
~~~ 会员留存明细
use dws;
drop table if exists dws.dws_member_retention_day;
create table dws.dws_member_retention_day
(
`device_id` string,
`uid` string,
`app_v` string,
`os_type` string,
`language` string,
`channel` string,
`area` string,
`brand` string,
`add_date` string comment '会员新增时间',
`retention_date` int comment '留存天数'
)COMMENT '每日会员留存明细'
PARTITIONED BY (`dt` string)
stored as parquet;~~~ # 操作实例
hive (default)> use dws;
hive (dws)> drop table if exists dws.dws_member_retention_day;
hive (dws)> create table dws.dws_member_retention_day
> (
> `device_id` string,
> `uid` string,
> `app_v` string,
> `os_type` string,
> `language` string,
> `channel` string,
> `area` string,
> `brand` string,
> `add_date` string comment '会员新增时间',
> `retention_date` int comment '留存天数'
> )COMMENT '每日会员留存明细'
> PARTITIONED BY (`dt` string)
> stored as parquet;三、留存会员计算：加载DWS层数据
### --- 加载DWS层数据
[root@hadoop02 ~]# vim /data/yanqidw/script/member_active/dws1_load_member_retention_day.sh
#!/bin/bash
source /etc/profile
if [ -n "$1" ] ;
then
do_date=$1
else
do_date=`date -d "-1 day" +%F`
fi
sql="
insert overwrite table dws.dws_member_retention_day partition(dt='$do_date')
(
select t2.device_id,
t2.uid,
t2.app_v,
t2.os_type,
t2.language,
t2.channel,
t2.area,
t2.brand,
t2.dt add_date,
1
from dws.dws_member_start_day t1 join dws.dws_member_add_day t2 on t1.device_id=t2.device_id
where t2.dt=date_add('$do_date', -1) and t1.dt='$do_date'
union all
select t2.device_id,
t2.uid,
t2.app_v,
t2.os_type,
t2.language,
t2.channel,
t2.area,
t2.brand,
t2.dt add_date,
2
from dws.dws_member_start_day t1 join dws.dws_member_add_day t2 on t1.device_id=t2.device_id
where t2.dt=date_add('$do_date', -2) and t1.dt='$do_date'
union all
select t2.device_id,
t2.uid,
t2.app_v,
t2.os_type,
t2.language,
t2.channel,
t2.area,
t2.brand,
t2.dt add_date,
3
from dws.dws_member_start_day t1 join dws.dws_member_add_day t2 on t1.device_id=t2.device_id
where t2.dt=date_add('$do_date', -3) and t1.dt='$do_date'
);
"
hive -e "$sql"~~~ # 授予可执行权限并加载数据
[root@hadoop02 ~]# chmod +x /data/yanqidw/script/member_active/dws1_load_member_retention_day.sh
[root@hadoop02 ~]# /data/yanqidw/script/member_active/dws1_load_member_retention_day.sh### --- 报错处理
~~~ return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask一般是内部错误
~~~ 找日志（hive.log【简略】 / MR的日志【详细】）hive.log ===>
~~~ 缺省情况下 /tmp/root/hive.log （hive-site.conf）MR的日志 ===> 启动historyserver、
~~~ 日志聚合 + SQL运行在集群模式
FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask~~~ # 改写SQL
[root@hadoop02 ~]# cat /data/yanqidw/script/member_active/dws_load_member_retention_day.sh
#!/bin/bash
source /etc/profile
if [ -n "$1" ] ;then
do_date=$1
else
do_date=`date -d "-1 day" +%F`
fi
sql="
drop table if exists tmp.tmp_member_retention;
create table tmp.tmp_member_retention as
(
select t2.device_id,
t2.uid,
t2.app_v,
t2.os_type,
t2.language,
t2.channel,
t2.area,
t2.brand,
t2.dt add_date,
1
from dws.dws_member_start_day t1 join dws.dws_member_add_day t2 on t1.device_id=t2.device_id
where t2.dt=date_add('$do_date', -1) and t1.dt='$do_date' union all
select t2.device_id,
t2.uid,
t2.app_v,
t2.os_type,
t2.language,
t2.channel,
t2.area,
t2.brand,
t2.dt add_date,
2
from dws.dws_member_start_day t1 join dws.dws_member_add_day t2 on t1.device_id=t2.device_id
where t2.dt=date_add('$do_date', -2) and t1.dt='$do_date' union all
select t2.device_id,
t2.uid,
t2.app_v,
t2.os_type,
t2.language,
t2.channel,
t2.area,
t2.brand,
t2.dt add_date,
3
from dws.dws_member_start_day t1 join dws.dws_member_add_day t2 on t1.device_id=t2.device_id
where t2.dt=date_add('$do_date', -3) and t1.dt='$do_date'
);
insert overwrite table dws.dws_member_retention_day
partition(dt='$do_date')
select * from tmp.tmp_member_retention;
"
hive -e "$sql"~~~ # 授予可执行权限并加载数据
[root@hadoop02 ~]# chmod +x /data/yanqidw/script/member_active/dws_load_member_retention_day.sh
[root@hadoop02 ~]# /data/yanqidw/script/member_active/dws_load_member_retention_day.sh
hive (dws)> show partitions dws_member_retention_day;
partition
dt=2021-09-29
hive (dws)> select * from dws_member_retention_day;四、创建ADS层表
### --- 创建ADS层表
~~~ # 语法
~~~ 会员留存数
use ads;
drop table if exists ads.ads_member_retention_count;
create table ads.ads_member_retention_count
(
`add_date` string comment '新增日期',
`retention_day` int comment '截止当前日期留存天数',
`retention_count` bigint comment '留存数'
) COMMENT '会员留存数'
partitioned by(dt string)
row format delimited fields terminated by ',';
~~~ 会员留存率
drop table if exists ads.ads_member_retention_rate;
create table ads.ads_member_retention_rate
(
`add_date` string comment '新增日期',
`retention_day` int comment '截止当前日期留存天数',
`retention_count` bigint comment '留存数',
`new_mid_count` bigint comment '当日会员新增数',
`retention_ratio` decimal(10,2) comment '留存率'
) COMMENT '会员留存率'
partitioned by(dt string)
row format delimited fields terminated by ',';~~~ # 操作实例
hive (dws)> use ads;
hive (ads)> drop table if exists ads.ads_member_retention_count;
hive (ads)> create table ads.ads_member_retention_count
> (
> `add_date` string comment '新增日期',
> `retention_day` int comment '截止当前日期留存天数',
> `retention_count` bigint comment '留存数'
> ) COMMENT '会员留存数'
> partitioned by(dt string)
> row format delimited fields terminated by ',';
hive (ads)> drop table if exists ads.ads_member_retention_rate;
hive (ads)> create table ads.ads_member_retention_rate
> (
> `add_date` string comment '新增日期',
> `retention_day` int comment '截止当前日期留存天数',
> `retention_count` bigint comment '留存数',
> `new_mid_count` bigint comment '当日会员新增数',
> `retention_ratio` decimal(10,2) comment '留存率'
> ) COMMENT '会员留存率'
> partitioned by(dt string)
> row format delimited fields terminated by ',';五、加载ADS层数据
### --- 加载ADS层数据
~~~ 备注：最后一条SQL的连接条件应为：t1.add_date=t2.dt。在10.4 节中有详细说明。
[root@hadoop02 ~]# vim /data/yanqidw/script/member_active/ads_load_member_retention.sh
#!/bin/bash
source /etc/profile
if [ -n "$1" ] ;then
do_date=$1
else
do_date=`date -d "-1 day" +%F`
fi
sql="
insert overwrite table ads.ads_member_retention_count partition (dt='$do_date')
select add_date, retention_date,
count(*) retention_count from dws.dws_member_retention_day
where dt='$do_date' group by add_date, retention_date;
insert overwrite table ads.ads_member_retention_rate partition (dt='$do_date')
select t1.add_date,
t1.retention_day,
t1.retention_count,
t2.cnt,
t1.retention_count/t2.cnt*100
from ads.ads_member_retention_count t1 join ads.ads_new_member_cnt t2 on t1.dt=t2.dt
where t1.dt='$do_date';
"
hive -e "$sql"~~~ # 授予可执行权限并加载数据
[root@hadoop02 ~]# chmod +x /data/yanqidw/script/member_active/ads_load_member_retention.sh
[root@hadoop02 ~]# /data/yanqidw/script/member_active/ads_load_member_retention.sh
hive (ads)> show partitions ads_member_retention_count;
partition
dt=2021-09-29
hive (ads)> show partitions ads_member_retention_rate;
partition
dt=2021-09-29
hive (ads)> select * from ads_member_retention_count;
hive (ads)> select * from ads_member_retention_rate;六、小结：会员活跃度--活跃会员数、新增会员、留存会员
### --- 脚本调用次序：
[root@hadoop02 ~]# cd /data/yanqidw/script/member_active/
~~~ # 加载ODS / DWD 层采集
./ods_load_startlog.sh
./dwd_load_startlog.sh
~~~ # 活跃会员
./dws_load_member_start.sh
./ads_load_member_active.sh
~~~ # 新增会员
./dws_load_member_add_day.sh
./ads_load_member_add.sh
~~~ # 会员留存
./dws_load_member_retention_day.sh
./ads_load_member_retention.shWalter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart
——W.S.Landor
