Hive2.0.0安装步骤(配置mysql+简单入门)

1、下载https://mirrors.tuna.tsinghua.edu.cn/apache/hive/hive-2.0.0/apache-hive-2.0.0-bin.tar.gz

2、拷贝到/usr/local/wl/hive目录下进行解压并重新命名hive

      拷贝mysql-connector-java-5.1.8-bin.jar(下面删除表出现问题需要换成mysql-connector-java-5.1.34.jar)到/usr/local/wl/hive/hive/lib下

      cp /usr/local/wl/hive/hive/conf/hive-default.xml.template  /usr/local/wl/hive/hive/conf/hive-site.xml

3、配置环境变量

vi /etc/profile

export HIVE_HOME=/usr/local/wl/hive/hive

export PATH=$PATH:$HIVE_HOME/bin

source /etc/profile

4、修改hive-site.xml相关内容:

${system:java.io.tmpdir}->全部替换成->/usr/local/wl/hive/tmp(新建/usr/local/wuliu/hive/tmp/root目录)
${system:user.name}->全部替换成->root

     <property>
    <name>hive.metastore.warehouse.dir</name>
    <value>/user/hive/warehouse</value><!-- Hadoop服务器会出现此文件夹-->

    <description>location of default database for the warehouse</description>

5、修改mysql配置

<property>
    <name>javax.jdo.option.ConnectionURL</name>
    <value>jdbc:mysql://123.206.26.35:3306/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>123456</value>
    <description>password to use against metastore database</description>
  </property>
6、初始化db(hive2.1之后)
进入/usr/local/wuliu/hive/hive/bin

hive元数据库初始化

schematool -initSchema -dbType mysql（或schematool -dbtype mysql -initSchema）
(注意:初始化完成后数据库hive下面会生成很多表55张)
查看初始化后信息 



7、进入/usr/local/wuliu/hive/hive/bin



show databases;
use default;

8、创建表

create table t_user(id int,username string, password string)row format delimited fields terminated by '\t' lines terminated by '\n';

(导入数据表的数据格式是：字段之间是tab键分割，行之间是断行)



Hadoop出现



从本地文件系统中加载数据:
load data local inpath "/usr/local/wuliu/hive/sql/t_user.txt"overwrite into table t_user;
//从hdfs中加载数据
Load data inpath “/usr/local/wuliu/hive/student.txt” into table student;

t_user.txt文件内容:（特别注意中间空格用\t）

1    admin1    123456

2    admin2    123456





mysql数据库设置

1、创建hive  database

2、alter database hive character set latin1;

3、set global binlog_format=’MIXED’;

=================================================异常===========================================================

1、出现(org.apache.hadoop.security.authorize.AuthorizationException): User: root is not allowed to impersonate root),配置下面的内容重新启动hadoop

<property>

    <name>hadoop.proxyuser.root.hosts</name>

    <value>*</value>

</property>

<property>

    <name>hadoop.proxyuser.root.groups</name>

    <value>*</value>

</property>

进入/usr/local/wl/hive/hive/bin查看修改之后的结果

hive --service hiveserver2

./beeline -u 'jdbc:hive2://localhost:10000/default' -n root

2、drop table t_test;

出现:    FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:For direct MetaStore DB connections, we don't support retries at the client level.)

将mysql 需要的jar用

mysql-connector-java-5.1.34.jar