Setting up the development environment

You can create a Hive UDF in a development environment using IntelliJ, for example, and build the UDF. You define the Cloudera Maven Repository in your POM, which accesses necessary JARS hadoop-common-<version>.jar and hive-exec-<version>.jar.

Open IntelliJ and create a new Maven-based project. Click Create New Project. Select Maven and the supported Java version as the Project SDK. Click Next.
Add archetype information.
For example:
- GroupId: com.mycompany.hiveudf
- ArtifactId: hiveudf
Click Next and Finish.
The generated pom.xml appears in sample-hiveudf.

To the pom.xml, add properties to facilitate versioning.

For example:

<properties>
   <hadoop.version>TBD</hadoop.version>
   <hive.version>TBD</hive.version>
</properties>

In the pom.xml, define the repositories.

Use internal repositories if you do not have internet access.

<repositories>
   <repository>
      <releases>
         <enabled>true</enabled>
         <updatePolicy>always</updatePolicy>
         <checksumPolicy>warn</checksumPolicy>
      </releases>
      <snapshots>
         <enabled>false</enabled>
         <updatePolicy>never</updatePolicy>
         <checksumPolicy>fail</checksumPolicy>
      </snapshots>
      <id>HDPReleases</id>
      <name>HDP Releases</name>
      <url>http://repo.hortonworks.com/content/repositories/releases/</url>
      <layout>default</layout>
   </repository>
   <repository>
      <id>public.repo.hortonworks.com</id>
      <name>Public Hortonworks Maven Repo</name>
      <url>http://repo.hortonworks.com/content/groups/public/</url>
      <snapshots>
         <enabled>false</enabled>
      </snapshots>
   </repository>
   <repository>
         <id>repository.cloudera.com</id>
         <url>https://repository.cloudera.com/artifactory/cloudera-repos/</url>
   </repository>
 </repositories>

Define dependencies.

For example:

<dependencies>
  <dependency>
       <groupId>org.apache.hive</groupId>
       <artifactId>hive-exec</artifactId>
       <version>${hive.version}</version>
    </dependency>
    <dependency>
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-common</artifactId>
       <version>${hadoop.version}</version>
    </dependency>
</dependencies>