Hive中添加自定义udf udaf udtf等函数的jar文件的三种方法
在开发了hive的udf udaf udtf函数的jar文件后,需要将jar文件放入hive的环境中才可以使用。可以通过以下三种方法加入:
在开发了hive的udf udaf udtf函数的jar文件后,,需要将jar文件放入hive的环境中才可以使用。可以通过以下三种方法加入:
1. 使用add jar path/test.jar;方法加入
该方法的缺点是每次启动Hive的时候都要从新加入,退出hive就会失效。
2. 通过设置hive的配置文件hive-site.xml 加入
在配置文件中增加配置
保存即可。
该方法比第一种方法方便很多。不需要每次启动Hive执行命令加入,只是配置稍微复杂一些。
3. 在${HIVE_HOME中创建文件夹auxlib ,然后将自定义jar文件放入该文件夹中。
个人推荐这种方法,方便快捷。

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