(Optional) Installing the Hive UDF Plugin

To push down UDFs compiled based on the Hive UDF framework to the OmniData service, you need to deploy the Hive UDF plugin for OmniData.

1. On the local host, decompress the boostkit-omnidata-hive-udf-loader-1.6.1-1.4.0-aarch64.zip package obtained in Table 3. The boostkit-omnidata-hive-udf-loader-1.6.1-1.4.0-aarch64 folder is generated.
2. After installing OmniData, copy the boostkit-omnidata-hive-udf-loader-1.6.1-1.4.0-aarch64 folder to the plugin directory under the OmniData installation directory, for example, /home/omm/omnidata-install/omnidata.
3. Configure the Hive UDF plugin.

   Add hive.properties to the etc/function-namespace directory under the OmniData installation directory /home/omm/omnidata-install/omnidata to configure the Hive UDF plugin. The file name can be changed, but the file name extension cannot be changed.

   

   The hive.properties file contains the following configuration items:

   1 2 3

   function-namespace-manager.name=hive-functions external-functions.dir=/home/omm/hive_udf_directory AES256Decrypt com.huawei.udf.AES256DecryptUDF

   Table 1 Parameters in hive.properties

   Parameter	Recommended Value	Description
   function-namespace-manager.name	hive-functions	Plugin name, which cannot be changed. The value must be hive-functions.
   external-functions.dir	/home/omm/hive_udf_directory	Path of the UDF JAR package written based on the Hive UDF framework and its dependencies. You can set this parameter to any absolute path on which the installation user has the read and write permissions.
   AES256Decrypt com.huawei.udf.AES256DecryptUDF	NA	The first value is the function name, and the second value is the full path class name (package name + class name) of the function. You need to add the corresponding configuration for each UDF.

   

   • If you modify parameter settings or add new UDFs in the configuration file, restart OmniData for the modification to take effect.
   • Ensure that the permission on the configuration file is 640.