Hive安装

Hive

Hive只在一个节点上安装即可


1.上传tar包

 自己下载.

2.解压

tar -zxvf hive-0.9.0.tar.gz -C /cloud/

3.配置mysql metastore(切换到root用户)

配置HIVE_HOME环境变量

rpm -qa | grep mysql
rpm -e mysql-libs-5.1.66-2.el6_3.i686 --nodeps
rpm -ivh MySQL-server-5.1.73-1.glibc23.i386.rpm 
rpm -ivh MySQL-client-5.1.73-1.glibc23.i386.rpm 

修改mysql的密码

/usr/bin/mysql_secure_installation

(注意:删除匿名用户,允许用户远程连接)

登陆mysql
mysql -u root -p


4.配置hive

cp hive-default.xml.template hive-site.xml 

修改hive-site.xml(删除所有内容,只留一个<property></property>)

添加如下内容:

<property>
 <name>javax.jdo.option.ConnectionURL</name>
 <value>jdbc:mysql://hadoop00:3306/hive?createDatabaseIfNotExist=true</value>
 <description>JDBC connect string for a JDBC metastore</description>
</property>


<property>
 <name>javax.jdo.option.ConnectionDriverName</name>
 <value>com.mysql.jdbc.Driver</value>
 <description>Driver class name for a JDBC metastore</description>
</property>
<property>
 <name>javax.jdo.option.ConnectionUserName</name>
 <value>root</value>
 <description>username to use against metastore database</description>
</property>
<property>
 <name>javax.jdo.option.ConnectionPassword</name>
 <value>123</value>
 <description>password to use against metastore database</description>
</property>

5.安装hive和mysq完成后,将mysql的连接jar包拷贝到$HIVE_HOME/lib目录下

如果出现没有权限的问题,在mysql授权(在安装mysql的机器上执行)

mysql -uroot -p

#(执行下面的语句  *.*:所有库下的所有表   %:任何IP地址或主机都可以连接)

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123' WITH GRANT OPTION;
FLUSH PRIVILEGES;

6.建表(默认是内部表)

create table trade_detail(id bigint, account string, income double, expenses double, time string) row format delimited fields terminated by '\t';

建分区表

create table td_part(id bigint, account string, income double, expenses double, time string) partitioned by (logdate string) row format delimited fields terminated by '\t';

建外部表

create external table td_ext(id bigint, account string, income double, expenses double, time string) row format delimited fields terminated by '\t' location '/td_ext';


7.创建分区表

普通表和分区表区别:有大量数据增加的需要建分区表

create table book (id bigint, name string) partitioned by (pubdate string) row format delimited fields terminated by '\t'; 


分区表加载数据

load data local inpath './book.txt' overwrite into table book partition (pubdate='2010-08-22');

load data local inpath '/root/data.am' into table beauty partition (nation="USA");

select nation, avg(size) from beauties group by nation order by avg(size);


  • 发表于 2017-11-20 10:54
  • 阅读 ( 514 )
  • 分类:杂谈

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