Hi @Werner Stinckens​ , Yes i followed the same instructions and was trying to solve this first for java program then later planning to convert python script to a jar file.

Below is the program that i used , Using Eclipse i was able to generate the .jar file successfully by adding "org.apache.hadoop.hive.ql.exec.UDF" this class file related jar into the project,

Code :

import org.apache.hadoop.hive.ql.exec.UDF;

public class SimpleUdf extends UDF {

public int evaluate(int value) {

return value + 10;

}

}

Jar file Link :

http://www.java2s.com/Code/Jar/h/Downloadhive041jar.htm

I placed it on the File Store of data bricks cluster and kept throwing the same error, please make sure the class path is correct.

I see you are from Data Bricks did you guys any documentation that helps me understand with an example...

Below is there but its not clear

https://docs.databricks.com/spark/latest/spark-sql/language-manual/sql-ref-syntax-ddl-create-functio...