本文介绍brew install hive并修改默认的metastore存储方案，改Derby数据库为mysql的方法以及可能遇到的问题的解决方案。
1. 通过homebrew安装hive
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brew install hive
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2. 添加hadoop和hive的环境变量
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sudo vim ~/.bash_profile
source ~/.bash_profile
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3. 下载mysql connector
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curl -L 'http://www.mysql.com/get/Downloads/Connector-J/mysql-connector-java-5.1.22.tar.gz/from/http://mysql.he.net/' | tar xz
sudo cp mysql-connector-java-5.1.15/mysql-connector-java-5.1.22-bin.jar /usr/local/Cellar/hive/hive.version.no/libexec/lib/
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4. 创建mysql metastore
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mysql> CREATE DATABASE metastore;
mysql> USE metastore;mysql> CREATE USER 'hiveuser'@'localhost' IDENTIFIED BY 'password';
mysql> GRANT SELECT,INSERT,UPDATE,DELETE,ALTER,CREATE ON metastore.* TO 'hiveuser'@'localhost';
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5. 配置hive的配置文件
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cp hive-default.xml.template hive-site.xml
#添加或者编辑如下内容<property> <name>javax.jdo.option.ConnectionURL</name>
<value>jdbc:mysql://localhost/metastore</value>
</property>
<property> <name>javax.jdo.option.ConnectionDriverName</name>
<value>com.mysql.jdbc.Driver</value>
</property>
<property> <name>javax.jdo.option.ConnectionUserName</name>
<value>hiveuser</value>
</property>
<property> <name>javax.jdo.option.ConnectionPassword</name>
<value>password</value>
</property>
<property> <name>datanucleus.fixedDatastore</name>
<value>false</value>
</property>
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6. 测试hive是否工作
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$ hive;hive > show tables;hive> create table temp_table temp_col string; |
7. Revoke few permissions on the mysql metastore
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$ mysqlmysql> REVOKE ALTER,CREATE ON metastore.* FROM 'hiveuser'@'localhost';
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9. Further troubleshooting :
(a) If you get a bin log error saying statement format is not support. Login to your mysql console as root
$ mysql -uroot mysql > SET GLOBAL binlog_format = 'ROW';
(b) You could also try reading the logs as follows. Logs can be emitted to the bash prompt while running hive by setting hive.root.logger to INFO,console.
$ hive -hiveconf hive.root.logger=INFO,console
(c)You could also read the raw hive logs which is usually located at /tmp/user_name/hive.log
(d)If you still have any errors, feel free to comment.
在配置完成后，可能遇到的问题解决方案：
一，Reference error
解决方案：
使用sequel pro， 修改hive用户的权限，添加Reference的global权限。
二，启动hive时遇到的" Caused by: java.net.URISyntaxException: Relative path in absolute URI: {system:java.io.tmpdir%7D/%7Bsystem:user.name%7D "
解决方案：
修改hive-site.xml 配置中的以下key value即可：
<name>hive.exec.scratchdir</name>
<value>/tmp/hive-${user.name}</value>
<name>hive.exec.local.scratchdir</name>
<value>/tmp/${user.name}</value>
<name>hive.downloaded.resources.dir</name>
<value>/tmp/${user.name}_resources</value>
<name>hive.scratch.dir.permission</name>
<value>733</value>
restart hive metastore and hiveserver2