Hive安装，

Hive安装，

hive 安装    http://www.open-open.com/lib/view/open1330908496483.html

hive安装配置

可安装集群任意节点上

tar -xf hive-x.y.z.tar.gz（本次安装为hive-0.8.1.tar.gz）
将解压后的hive-0.8.1文件放在系统的/opt/soft/hive中。

在/etc/profile中添加：
export HIVE_HOME=/opt/soft/hive
export PATH=$HIVE_HOME/bin:$PATH

修改hive-0.8.1目录下/conf/hive-env.sh.template中的HADOOP_HOME为实际的Hadoop安装目录：/opt/hadoop/。

cp hive-env.sh.template hive-env.sh
    
    vim hive-env.sh
    export JAVA_HOME=/opt/soft/jdk 
    HADOOP_HOME=/opt/soft/hadoop  

cp hive-default.xml hive-site.xml
    
    vim hive-site.xml
hive.metastore.warehouse.dir：（HDFS上的）数据目录
hive.exec.scratchdir：（HDFS上的）临时文件目录
连接数据库配置
javax.jdo.option.ConnectionURL：元数据连接字串
javax.jdo.option.ConnectionDriverName：DB连接引擎，MySQL为com.mysql.jdbc.Driver
javax.jdo.option.ConnectionUserName：DB连接用户名
javax.jdo.option.ConnectionPassword：DB连接密码
示例

create database hivedb character set latin1;

grant all privileges on hivedb.* to hiveuser@'%' identified by 'hiveuser';

将mysql-connector-java-*.jar拷贝到  hive/lib

<property>

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

<value>jdbc:mysql://10.58.120.7:3310/hivedb?useUnicode=true&amp;characterEncoding=UTF-8&amp;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>hiveuser</value>

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

</property>

<property>

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

<value>hiveuser</value>

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

</property>


hive 权限
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Authorization



启动Hive时报错如下：
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/hive/conf/HiveConf
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:247)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:149)
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.hive.conf.HiveConf
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
解决办法：
        vim hadoop-env.sh

export HADOOP_CLASSPATH=${HBASE_HOME}/hbase-0.90.3.jar:${HBASE_HOME}/hbase-0.90.3-test.jar:${HBASE_HOME}/conf:${HBASE_HOME}/lib/zookeeper-3.3.2.jar:${HBASE_HOME}/lib/guava-r06.jar

将其修改为：

export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:export HADOOP_CLASSPATH=${HBASE_HOME}/hbase-0.90.3.jar:${HBASE_HOME}/hbase-0.90.3-test.jar:${HBASE_HOME}/conf:${HBASE_HOME}/lib/zookeeper-3.3.2.jar:${HBASE_HOME}/lib/guava-r06.jar（注意：只需在原配置语句上加$HADOOP_CLASSPATH:既可）



创建外部分区表：
 
CREATE EXTERNAL  table t4(id int, name string ,count int)
 partitioned by(adddate string)
row format delimited
fields terminated by '\t'
STORED AS TEXTFILE LOCATION '/test/user4' ;

hadoop fs -put /work/user.txt /test/user4/user_20120404/user
hadoop fs -put /work/user.txt /test/user4/user_20120405/user

ALTER TABLE t4 ADD PARTITION ( adddate=' 20120404 ') location '/test/user4/user_20120404' ;
ALTER TABLE t4 ADD PARTITION ( adddate=' 20120405 ') location '/test/user4/user_20120405' ;

查看分区    show partitions