CDH 永久 UDF 发布

Creating Permanent Functions

1. Copy the JAR file to HDFS and make sure the hive user can access this JAR file.
2. Copy the JAR file to the host on which HiveServer2 is running. Save the JARs to any directory you choose, give the hive user read, write, and execute access to this directory, and make a note of the path (for example, /opt/local/hive/lib/).

   Note: If the Hive Metastore is running on a different host, create the same directory there that you created on the HiveServer2 host. You do not need to copy the JAR file onto the Hive Metastore host, but the same directory must be there. For example, if you copied the JAR file to /opt/local/hive/lib/ on the HiveServer2 host, you must create the same directory on the Hive Metastore host. If the same directory is not present on the Hive Metastore host, Hive Metastore service will not start.

3. In the Cloudera Manager Admin Console, go to the Hive service.
4. Click the Configuration tab.
5. Expand the Hive (Service-Wide) scope.
6. Click the Advanced category.
7. Configure the Hive Auxiliary JARs Directory property with the HiveServer2 host path and the Hive Metastore host path from Step 2, for example /opt/local/hive/lib/. Setting this property overwrites hive.aux.jars.path, even if this variable has been previously set in the HiveServer2 advanced configuration snippet.
8. Click Save Changes. The JARs are added to HIVE_AUX_JARS_PATH environment variable.
9. Redeploy the Hive client configuration.
   1. In the Cloudera Manager Admin Console, go to the Hive service.
   2. From the Actions menu at the top right of the service page, select Deploy Client Configuration.
   3. Click Deploy Client Configuration.
10. Restart the Hive service.
11. With Sentry enabled - Grant privileges on the JAR files to the roles that require access. Log in to Beeline as user hive and use the Hive SQL GRANT statement to do so. For example:

    GRANT ALL ON URI 'file:///opt/local/hive/lib/my.jar' TO ROLE EXAMPLE_ROLE

    You must also grant privilege to the JAR on HDFS:

    GRANT ALL ON URI 'hdfs:///path/to/jar' TO ROLE EXAMPLE_ROLE

12. Run the CREATE FUNCTION command to create the UDF from the JAR file and point to the JAR file location in HDFS. For example:

    CREATE FUNCTION addfunc AS 'com.example.hiveserver2.udf.add' USING JAR 'hdfs:///path/

转自

https://www.cloudera.com/documentation/enterprise/5-6-x/topics/cm_mc_hive_udf.html#concept_nc3_mms_lr