hive使用与注意事项:http://blog.csdn.net/stark_summer/article/details/44222089
连接命令:beeline -n root -u jdbc:hive2://10.149.11.215:10000
退格乱码解决:http://www.cnblogs.com/BlueBreeze/p/4232369.html
1,安装好hadoop
2,下载hive
http://mirror.bit.edu.cn/apache/hive/hive-2.0.1/
hadoop2.6.2
1.7.0_80
3,配置:
启动单机模式
Hive和Hadoop一样,有3种启动模式,分别是单机模式,伪分布模式,分布模式。这里先来说一下单机模式的启动方式。
mv apache-hive-2.0.1-bin hive-2.0.1
vi hive-site.xml
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
<property>
<name>hive.metastore.warehouse.dir</name>
<value>/usr/bigdata/hive-2.0.1/warehouse</value>
<description>location of default database for the warehouse</description>
</property>
<property>
<name>javax.jdo.option.ConnectionURL</name>
<value>jdbc:derby:/usr/bigdata/hive-2.0.1/metastore_db;create=true</value>
<description>JDBC connect string for a JDBC metastore</description>
</property>
</configuration>
4,环境变量:
vi /etc/profile
HIVE_HOME=/usr/bigdata/hive-2.0.1
PATH=$PATH:$HIVE_HOME/bin
5,初始化数据库
schematool -initSchema -dbType derby
出现以下几行说明初始化成功:
Starting metastore schema
initialization to 2.0.0
Initialization script hive-schema-2.0.0.derby.sql
Initialization script completed
schemaTool completed
6,
启动程序
mkdir -p /usr/bigdata/hive-2.0.1/warehouse
chmod a+rwx /usr/bigdata/hive-2.0.1/warehouse
hive
如果出现hive>
提示符则说明启动成功
5. 常见错误
5.1 运行hive时出现
Exception in thread "main" java.lang.RuntimeException: Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType ...) to create the schema. If needed, don't forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for mysql)
错误原因: 数据库没有初始化,请参照4.2
5.2 使用schematool初始化数据库时出现
Initialization script hive-schema-2.0.0.derby.sql
Error: FUNCTION 'NUCLEUS_ASCII' already exists. (state=X0Y68,code=30000)
org.apache.hadoop.hive.metastore.HiveMetaException: Schema initialization FAILED! Metastore state would be inconsistent !!
*** schemaTool failed ***
错误原因:数据库文件夹中已经存在一些文件,解决方法就是清空数据库文件夹(也就是前面配置的/opt/hive-2.0.0/metastore_db
文件夹)
HIVE基本使用:
http://blog.csdn.net/f328310543/article/details/42682685
hive-env.xml cp hive-env.sh.template hive-env.sh $HIVE_HOME/bin的hive-env.sh,增加以下四行 export HADOOP_HOME=/usr/local/hadoop-2.6.0
export HIVE_HOME=/usr/local/hive-1.2.1
export JAVA_HOME=/usr/local/jdk1.7.0_80
拷贝mysql链接驱动到 hive/lib下面
HIVE 元数据mysql保存配置 hive-site.xml <property>
<name>hive.metastore.warehouse.dir</name>
<value>/usr/bigdata/hive-2.0.1/warehouse</value>
<description>location of default database for the warehouse</description>
</property> <property>
<name>javax.jdo.option.ConnectionURL</name>
<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>
</property> <property>
<name>javax.jdo.option.ConnectionUserName</name>
<value>root</value><!-- In my case UserName is hadoop-->
</property> <property>
<name>javax.jdo.option.ConnectionPassword</name>
<value>root</value><!-- In my case password is hadoop-->
</property>
启动hive服务:
hive --service metastore &
hive --service hiveserver &
高版本用:
hive --service hiveserver2 &
hive 的metadata从1.0升级到2.0 数据迁移
hive/scripts/metastore/upgrade