需求
统计某游戏平台新用户渠道来源
日志格式如下：
Jul 23 0:00:47 [info] {SPR}gjzq{SPR}20130723000047{SPR}85493108{SPR}S1{SPR}{SPR}360wan-2j-reg{SPR}58.240.209.78{SPR}
分析
问题的关键在于先找出新用户
新用户：仅在7月份登陆过平台的用户为新用户
依据map/reduce思想，可以按照如下方式找出新用户：
- 假如某用户在某月份出现过，则（qid，year，month）=1
- 按qid汇总该用户出现过的月数，即构建(qid,count(year,month))对
- 新用户的count（year，month）=1，且(year,month)=(2013,07).
找出新用户的来源渠道
来源渠道：新用户在201307可能多次登录平台，需要找出最早登陆平台所属渠道
分两步来做：
- 找出新用户所有登陆记录（qid,logintime,src）
- 针对同一qid找出logintime最小时的src
实现
-
数据准备
1）建表
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create table if not exists glogin_daily (year int,month int,day int,hour int,logintime string,qid int,gkey string,skey string,loginip string,registsrc string,loginfrom string) partitioned by (dt string);
依据日志内容及所关心的信息创建表格，按天组织分区
2 ) 数据导入
因日志文件存在于多处，我们先将日志汇总到一临时目录，创建临时外部表将数据加载进hive，然后通过正则匹配的方式分隔出各字段。（内部表只能load单文件，通过这种方式可以load文件夹）
echo "==== load data into tmp table $TMP_TABLE ==="
${SOFTWARE_BASE}/hive/bin/hive -e "create external table $TMP_TABLE (info string) location '${TMP_DIR}';"
echo "==== M/R ==="
CURR_YEAR=`echo $CURR_DOING|cut -b 1-4`
CURR_MONTH=`echo $CURR_DOING|cut -b 5-6`
CURR_DAY=`echo $CURR_DOING|cut -b 7-8`
dt="${CURR_YEAR}-${CURR_MONTH}-${CURR_DAY}"
${SOFTWARE_BASE}/hive/bin/hive -e "add file ${SCRIPT_PATH}/${MAP_SCRIPT_FILE};set hive.exec.dynamic.partition=true;insert overwrite table glogin_daily partition (dt='${dt}') select transform (t.i) using '$MAP_SCRIPT_PARSER ./${MAP_SCRIPT_FILE}' as (y,m,d,h,t,q,g,s,ip,src,f) from (select info as i from ${TMP_TABLE}) t;"
其中filter_login.php:
$fr=fopen("php://stdin","r");
$month_dict = array(
'Jan' => 1,
'Feb' => 2,
'Mar' => 3,
'Apr' => 4,
'May' => 5,
'Jun' => 6,
'Jul' => 7,
'Aug' => 8,
'Sep' => 9,
'Oct' => 10,
'Nov' => 11,
'Dec' => 12,
);
while(!feof($fr))
{
$input = fgets($fr,256);
$input = rtrim($input);
//Jul 23 0:00:00 [info] {SPR}xxj{SPR}20130723000000{SPR}245396389{SPR}S9{SPR}iwan-ng-mnsg{SPR}cl-reg-xxj0if{SPR}221.5.67.136{SPR}
if(preg_match("/([^ ]+) +(\d+) (\d+):.*\{SPR\}([^\{]*)\{SPR\}(\d+)\{SPR\}(\d+)\{SPR\}([^\{]*)\{SPR\}([^\{]*)\{SPR\}(([^\{]*)\{SPR\}([^\{]*)\{SPR\})?/",$input,$matches))
{
$year = substr($matches[5],0,4);
echo $year."\t".$month_dict[$matches[1]]."\t".$matches[2]."\t".$matches[3]."\t".$matches[5]."\t".$matches[6]."\t".$matches[4]."\t".$matches[7]."\t".$matches[11]."\t".$matches[8]."\t".$matches[10]."\n";
}
}
fclose ($fr);
2.找出新用户
1)用户登陆平台记录按月消重汇总
create table distinct_login_monthly_tmp_07 as select qid,year,month from glogin_daily group by qid,year,month;
2)用户登陆平台月数
create table login_stat_monthly_tmp_07 as select qid,count(1) as c from distinct_login_monthly_tmp_07 where year<2013 or (year=2013 and month<=7) group by qid;
平台级新用户：
1)找出登陆月数为1的用户;
2.判断这些用户是否在7月份出现，如果有出现，找出登陆所有src
create table new_player_monthly_07 as select distinct a.qid,b.src,b.logintime from (select qid from login_stat_monthly_tmp_07 where c=1) a join (select qid,loginfrom as src,logintime from glogin_daily where month=7 and year=2013) b on a.qid=b.qid;
找出最早登陆的src:
add file /home/game/lvbenwei/load_login/get_player_src.php; create table new_player_src_07 as select transform (t.qid,t.src,t.logintime) using 'php ./get_player_src.php' as (qid,src,logintime) from (select * from new_player_monthly_07 order by qid,logintime) t;
其中get_player_src.php:
$fr=fopen("php://stdin","r");
$curr_qid = null;
$curr_src = null;
$curr_logintime=null;
while(!feof($fr))
{
$input = fgets($fr,1024);
$input = rtrim($input);
$arr = explode("\t", $input);
$qid = trim($arr[0]);
if(empty($curr_qid)||$curr_qid != $qid)
{
$curr_qid = $qid;
echo $input."\n";
}
}
fclose ($fr);
平台级新用户数：
select count(*) from new_player_src_07;
平台级各渠道新用户汇总：
create table new_player_src_stat_07 as select src,count(*) from new_player_monthly_07 group by src;
- 假如某用户在某月份出现过，则（qid，year，month）=1
- 按qid汇总该用户出现过的月数，即构建(qid,count(year,month))对
- 新用户的count（year，month）=1，且(year,month)=(2013,07).