01Hadoop安装完成

hadoop安装

02MySQL安装完成

MySQL安装

03安装Hive1.2.1

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解压至/usr/local/src
配置并编辑vi conf/hive-env.sh

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 cp hive-env.sh.template hive-env.sh
 vi hive-env.sh

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创建vi hive-site.xml

 <configuration>
    <property>
    <name>javax.jdo.option.ConnectionURL</name>
            //localhost指的是当前的主机，也可以换成IP
    <value>jdbc:mysql://localhost: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>root</value>
    <description>password to use against metastore database</description>
    </property>
</configuration> 

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Jline包版本不一致的问题，需要拷贝hive的lib目录中jline.2.12.jar的jar包替换掉hadoop中的 
/home/hadoop/app/hadoop-2.6.4/share/hadoop/yarn/lib/jline-0.9.94.jar

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启动hive
bin/hive

Hive几种使用方式：

1.Hive交互shell      bin/hive

2.Hive JDBC服务(参考java jdbc连接mysql)

3.hive启动为一个服务器，来对外提供服务
    bin/hiveserver2
    nohup bin/hiveserver2 1>/var/log/hiveserver.log 2>/var/log/hiveserver.err &
    
    启动成功后，可以在别的节点上用beeline去连接
    bin/beeline -u jdbc:hive2://mini1:10000 -n root
    
    或者
    bin/beeline
    ! connect jdbc:hive2://mini1:10000

4.Hive命令 
    hive  -e  ‘sql’
    bin/hive -e 'select * from t_test'