The following guide provides step-by-step instructions to get started writing and running UDFs in Java. This example is a simple distributed UDF that copies data from one table to another using a CSV ...

A Java Archive, or JAR file, contains all of the various components that make up a self-contained, executable Java application, deployable Java applet or, most commonly, a Java library to which any ...

In a previous Java 101 tutorial, you learned how to better organize your code by declaring reference types (also known as classes and interfaces) as members of other reference types and blocks. I also ...

We'll use Maven to build and package the project, start up a Heron cluster locally, and run the topology on the live cluster. These values are used in different sections of the pom.xml. For example, ...

Community driven content discussing all aspects of software development from DevOps to design patterns. Apache Maven is a Java build tool and dependency management engine that simplifies the ...