Hive安装（apache-hive-0.13.1-bin.tar.gz）：
1.vi hive-env.sh
48 HADOOP_HOME=/usr/local/hadoop
51 export HIVE_CONF_DIR=/usr/local/hive/conf
2.在hdfs中添加目录
[root@master hadoop]#hdfs dfs -mkdir -p /tmp
[root@master hadoop]#hdfs dfs -mkdir -p /user/hive/warehouse
[root@master hadoop]# bin/hdfs dfs -chmod g+x /tmp
[root@master hadoop]# bin/hdfs dfs -chmod g+x /user/hive/warehouse
mysql安装：
MySQL-server-5.6.24-1.el6.x86_64.rpm、MySQL-client-5.6.24-1.el6.x86_64.rpm
1.查看是否安装mysql
# rpm -qa|grep mysql
2.安装mysql server
# rpm -ivh MySQL-server-5.6.24-1.el6.x86_64.rpm
可能报错：
file /usr/share/mysql/charsets/swe7.xml from install of MySQL-server-5.6.24-1.el6.x86_64 conflicts with file from package mariadb-libs-1:5.5.52-1.el7.x86_64
删除mariadb-libs-1:5.5.52-1.el7.x86_64：
#rpm -e --nodeps mariadb-libs-1:5.5.52-1.el7.x86_64
重新安装：
# rpm -ivh MySQL-server-5.6.24-1.el6.x86_64.rpm
安装后生成一个随机密码
#cat /root/.mysql_secret
E0HDIov6IO5leHWr
3.安装mysql client
#rpm -ivh MySQL-client-5.6.24-1.el6.x86_64.rpm
4.更改密码（改为：123456）
#mysql -uroot -pE0HDIov6IO5leHWr
mysql> SET PASSWORD=PASSWORD('123456');
Query OK, 0 rows affected (0.00 sec)
mysql> exit
更改完成、重新进入mysql
# mysql -uroot -pgsdjsj （用户名：root、密码:gsdjsj）
5.更改用户连接
mysql> use mysql;
mysql> show tables;
查看可连接用户：（只有表中用户可连接mysql）
mysql> select User,Host,Password from user;
+------+-----------+-------------------------------------------+
| User | Host | Password |
+------+-----------+-------------------------------------------+
| root | localhost | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| root | master | *9EA1750BD72323ED75587BF130428B247DEAFD18 |
| root | 127.0.0.1 | *9EA1750BD72323ED75587BF130428B247DEAFD18 |
| root | ::1 | *9EA1750BD72323ED75587BF130428B247DEAFD18 |
+------+-----------+-------------------------------------------+
4 rows in set (0.00 sec)
设置任意用户都能连接mysql：
mysql> update user set Host='%' where User='root' and Host='localhost';
删除其余用户，并刷新：
mysql> delete from user where User='root' and Host='master';
Query OK, 1 row affected (0.00 sec)
mysql> delete from user where User='root' and Host='127.0.0.1';
Query OK, 1 row affected (0.00 sec)
mysql> delete from user where User='root' and Host='::1';
Query OK, 1 row affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
拷贝mysql驱动jar包，到Hive安装目录的lib下（附件）：
# tar -zxvf mysql-connector-java-5.1.27.tar.gz
# cd mysql-connector-java-5.1.27/
# cp mysql-connector-java-5.1.27-bin.jar /usr/local/hive/lib/
配置Hive(conf)：
配置hive-log4j.properties：
#mv hive-log4j.properties.template hive-log4j.properties
#vi hive-log4j.properties
hive.log.dir=/usr/local/hive/logs
配置hive-site.xml(创建hive-site.xml文件)：
?xml version="1.0"?>
2 <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
3 <configuration>
4 <property>
5 <name>javax.jdo.option.ConnectionURL</name>
6 <value>jdbc:mysql://master:3306/metastore?createDatabaseIfNotExist=true</value>
7 <description>JDBC connect string for a JDBC metastore</description>
8 </property>
9 <property>
10 <name>javax.jdo.option.ConnectionDriverName</name>
11 <value>com.mysql.jdbc.Driver</value>
12 <description>Driver class name for a JDBC metastore</description>
13 </property>
14 <property>
15 <name>javax.jdo.option.ConnectionUserName</name>
16 <value>root</value>
17 <description>username to use against metastore database</description>
18 </property>
19 <property>
20 <name>javax.jdo.option.ConnectionPassword</name>
21 <value>123456</value>
22 <description>password to use against metastore database</description>
23 </property>
24
25 <property>
26 <name>hive.cli.print.header</name>
27 <value>true</value>
28 <description>Whether to print the names of the columns in query output.</description>
29 </property>
30
31 <property>
32 <name>hive.cli.print.current.db</name>
33 <value>true</value>
34 <description>Whether to include the current database in the Hive prompt.</description>
35 </property>
36 </configuration>
在hive目录下新建日志目录
#mkdir logs
hive常用命令：
[root@master hive]# bin/hive -help
usage: hive
-d,--define <key=value> Variable subsitution to apply to hive
commands. e.g. -d A=B or --define A=B
--database <databasename> Specify the database to use
-e <quoted-query-string> SQL from command line
-f <filename> SQL from files
-H,--help Print help information
-h <hostname> connecting to Hive Server on remote host
--hiveconf <property=value> Use value for given property
--hivevar <key=value> Variable subsitution to apply to hive
commands. e.g. --hivevar A=B
-i <filename> Initialization SQL file
-p <port> connecting to Hive Server on port number
-S,--silent Silent mode in interactive shell
-v,--verbose Verbose mode (echo executed SQL to the
console)
[root@master hive]#bin/hive -e <quoted-query-string>
eg:
bin/hive -e "select * from db_hive.student ;"
[root@master hive]# bin/hive -f <filename>
eg:
$ touch hivef.sql
select * from db_hive.student ;
$ bin/hive -f /opt/datas/hivef.sql
$ bin/hive -f /opt/datas/hivef.sql > /opt/datas/hivef-res.txt
[root@master hive]#bin/hive -i <filename>
与用户udf相互使用
在hive cli命令窗口中查看hdfs文件系统
hive (default)> dfs -ls / ;
在hive cli命令窗口中查看本地文件系统
hive (default)> !ls /opt/datas ；
hive基本操作：
show databases ;
create database db_hive ;
create table student(id int, name string) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t';
show tables ;
desc student ;
desc extended student ;
desc formatted student ;
//导入数据到表中
load data local inpath '/opt/datas/student.txt' into table db_hive.student ;
//查看函数
show functions ;
//查看upper函数
desc function upper ;
desc function extended upper ;