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:

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

hive.aux.jars.path
file:///jarpath/all_new1.jar,file:///jarpath/all_new2.jar

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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