Hive1.2安裝

1. 安裝mysql數據庫（這個能夠用其餘DB代替），安裝方法參照之前寫的Mysql安裝教程。

2. 登陸mysql，建立hive用戶。

```

create user 'hive' identified by 'hive';

grant all privileges on *.* to 'hive'@'%' with grant option;

flush privileges;    

```

3. 建立hive數據庫

```

create database hive;

show databases;

```

4. 安裝Hadoop集羣環境，按照hadoop僞分佈式安裝教程安裝

5. 下載Hive安裝包，並解壓至相關目錄

6. 設置環境變量

```

#hive pro

export HIVE_HOME=/home/dzy/runsofts/apache-hive-1.2.1

export PATH=$PATH:$HIVE_HOME/bin

export CLASSPATH=$CLASSPATH:$HIVE_HOME/bin

```

使其生效
```source /etc/profile```

7. 建立一個IO的tmp文件，筆者在用戶根目錄下建立的 hive/iotmp 用來修改配置

8. 修改Hive配置，將其conf文件中的hive-default.xml.templete配置文件複製更名hive-site.xml，主要修改如下參數

```

  <property>

    <name>javax.jdo.option.ConnectionURL</name>

    <value>jdbc:mysql://localhost:3306/hive</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>hive</value>

    <description>Username to use against metastore database</description>

  </property>

  <property>

    <name>javax.jdo.option.ConnectionPassword</name>

    <value>hive</value>

    <description>password to use against metastore database</description>

  </property>

  <property>

    <name>hive.querylog.location</name>

    <value>/home/dzy/logs/hive_logs</value>

    <description>Location of Hive run time structured log file</description>

  </property>

  <property>

    <name>hive.exec.local.scratchdir</name>

    <value>/home/dzy/hive/iotmp/hive-${user.name}</value>

    <description>Local scratch space for Hive jobs</description>

  </property>

  <property>

    <name>hive.downloaded.resources.dir</name>

    <value>/home/dzy/hive/iotmp</value>

    <description>Temporary local directory for added resources in the remote file system.</description>

  </property>

```

8. 啓動hive，若是出現如下提示，須要將conf中的複製修改 cp hive-env.sh.template hive-env.sh

```
dzy@dzy-pc ~/runsofts/apache-hive-1.2.1/conf $ hive

Cannot find hadoop installation: $HADOOP_HOME or $HADOOP_PREFIX must be set or hadoop must be in the         path

```

將其中的修改

```

# Set HADOOP_HOME to point to a specific hadoop install directory

HADOOP_HOME=/home/dzy/runsofts/hadoop

```

9. 啓動hive，此時正常啓動。此時mysql的hive庫中多了不少表。

10. 在啓動的hive中直接建立表

```

hive> create table test1(name string,age int);

OK

Time taken: 0.793 seconds

hive> show tables;

OK

test1

Time taken: 0.046 seconds, Fetched: 1 row(s)

hive> desc te

temporary    terminated   textfile     

hive> desc test1;

OK

name                	string              	                    

age                 	int                 	                    

Time taken: 0.185 seconds, Fetched: 2 row(s)

```

11. 在mysql查看建立的表，這個表不是物理表哦～

```

select * from hive.TBLS

```

12. 刪除該表drop table test1