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基于MySQL和Infobright的数据仓库技术

[日期:2012-02-10] 来源:Linux社区  作者:Linux [字体: ]
用户设置
ulimit -SHn 65535
mkdir -p /home/mysql/infobright
/usr/sbin/groupadd mysql
/usr/sbin/useradd -g mysql mysql
cd /usr/local/soft/

下载解压
64位系统
wget http://www.infobright.org/downloads/ice/infobright-3.3.1-x86_64-ice.tar.gz
tar zxvf infobright-3.3.1-x86_64-ice.tar.gz
mv infobright-3.3.1-x86_64 infobright

32位系统
wget http://www.infobright.org/downloads/ice/infobright-3.3.1-i686-ice.tar.gz
tar zxvf infobright-3.3.1-i686-ice.tar.gz
mv infobright-3.3.1-i686 infobright

安装步骤
cd infobright
./install-infobright.sh --datadir=/home/mysql/infobright/data --cachedir=/home/mysql/infobright/cache --config=/home/mysql/infobright/my.cnf --port=3307 --socket=/tmp/mysqlinfobright.sock --user=mysql --group=mysql

内存限制
vi /home/mysql/infobright/data/brighthouse.ini

启动与停止
cd /usr/local/infobright/; ./bin/mysqld_safe --defaults-file=/home/mysql/infobright/my.cnf 2>&1 > /dev/null &
cd /usr/local/infobright/; ./bin/mysqladmin -uroot -p -S /tmp/mysqlinfobright.sock shutdown
/usr/local/infobright/bin/mysql -S /tmp/mysqlinfobright.sock

测试导出
/usr/local/mysql/bin/mysql -uroot -p -Dt2011 -e "select username,user_id,regtime into outfile '/home/test.csv' FIELDS TERMINATED BY ',' ENCLOSED BY '\"'  ESCAPED BY '\\\' LINES TERMINATED BY '\n' from users limit 300;"

测试导入
/usr/local/infobright/bin/mysql -S /tmp/mysqlinfobright.sock -uroot -p  -Dt2011_logs --skip-column-names -e "LOAD DATA INFILE '/home/test.csv' INTO TABLE access_log FIELDS TERMINATED BY ',' ESCAPED BY '\\\' LINES TERMINATED BY '\n';"

设置权限
/usr/local/mysql/bin/mysql -uroot
/usr/local/infobright/bin/mysql -S /tmp/mysqlinfobright.sock
GRANT ALL PRIVILEGES ON *.* TO 'addcn'@'localhost' IDENTIFIED BY '123456';
SET PASSWORD FOR 'addcn'@'localhost' = old_password('addcn2011');
FLUSH PRIVILEGES;

GRANT ALL PRIVILEGES ON *.* TO 'addcn'@'%' IDENTIFIED BY '123456';
SET PASSWORD FOR 'addcn'@'%' = old_password('addcn2011');

/usr/local/infobright/bin/mysql -S /tmp/mysqlinfobright.sock -uaddcn -paddcn2011  -Dt2011_logs --skip-column-names -e "LOAD DATA INFILE '/home/test.csv' INTO TABLE access_log FIELDS TERMINATED BY ',' ESCAPED BY '\\\' LINES TERMINATED BY '\n';"

其它数据
CREATE DATABASE `t2011_logs` ;
CREATE TABLE `access_log` (
  `sid` varchar(50) NOT NULL,
  `user_id` int(11) NOT NULL,
  `timestamp` int(11) NOT NULL
) ENGINE=BRIGHTHOUSE DEFAULT CHARSET=latin1;

1,1001,1282815666
2,1002,1282815668
3,1003,1282815675
LOAD DATA INFILE '/home/test.csv' INTO TABLE `access_log` FIELDS TERMINATED BY ',' ESCAPED BY '' LINES TERMINATED BY '\n';

select * from access_log;

压缩比例:
1,660,546数据,1498MB后为56179KB
1 533 952 / 56 179 = 27.3047224

内容超出字段类型:
ERROR 2 (HY000) at line 1: Wrong data or column definition. Row: 3, field: 16.linux
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