hive UDF添加方式

hive UDF添加的方式

1.添加临时函数，只能在此会话中生效，退出hive自动失效

 hive> add jar /home/jtdata/hiveUDF/out0.jar;
 Added [/home/jtdata/hiveUDF/out0.jar] to class path
 Added resources: [/home/jtdata/hiveUDF/out0.jar]
 
 hive> create temporary function quling as 'com.redhadoop.dataout0.DayOut0';
 OK
 Time taken: 0.135 seconds

2.添加永久函数

 hadoop-1 ~]# cd $HIVE_HOME
 
 hadoop-1 hive-client]# mkdir auxlib
 
 hadoop-1 auxlib]# ls
 Month.jar  out0.jar
 
 hive> create function quling as 'com.redhadoop.dataout0.DayOut0';

3.添加永久函数

 hadoop- conf]# vim hive-site.xml 

在此配置文件中增加配置

<property>
<name>hive.aux.jars.path</name>
<value>file:///home/hiveUDF/Month.jar,file:///home/hiveUDF/OutZ.jar</value>
</property>