If You Know Kettle (Pentaho Data Integration)

Why Hop?

Hop wants to allow data engineers to be able to deliver high quality work, deliver that work fast and integrated with bleeding edge technology.

We want Hop to be completely open source, and are eager to hear your feedback on our Github Discussions and just as eager to see your bug tickets and feature request in Github Issues.

As an open source first project, we started the Apache Software Foundation incubation process in September 2020 and graduated as and ASF top level project in December 2021.

Check our Q&A for more information on why Hop was created and what the project is all about.

Concepts

A couple of things have been renamed to align Apache Hop with modern data processing platforms.

A lot has changed behind the scenes, but don’t worry, if you’re familiar with Kettle/PDI, you’ll feel right at home immediately.

Kettle	Hop	Difference
Spoon	Hop Gui	Spoon has been abandoned. Hop Gui was written from scratch. Check the Getting Started guide or the Hop Gui docs to find out more.
Transformation	Pipeline	No conceptual changes. You’ll develop pipelines just like you would develop a transformation, but a pipeline in Hop can run on different runtimes
Job	Workflow	No conceptual changes. You’ll develop a workflow just like you would develop a job, but a workflow in Hop can run on different runtimes
Step	Transform	No conceptual changes. The underlying code has changed and the dialogs have been updated, but you’ll feel right at home.
Job Entry	Action	No conceptual changes. The underlying code has changed and the dialogs have been updated, but you’ll feel right at home.
Metastore	Metadata	All metadata objects in Hop are stored as metadata. This happens behind the scenes. Except for increased usability, as a Hop developer, you’ll hardly notice.
Carte	Hop Server	Again, smooth sailing. A lot has changed behind the scenes, but you’ll hardly notice. Check the docs
Pan/Kitchen/(Maitre)	Hop Run	Kitchen and Pan depended on the Spoon GUI code. With the rewrite of Spoon to Hop Gui, we’ve recreated the command line tools. We believe this now is more consistent while providing more options and being easier to use at the same time. Check the docs
JNDI	gone	jndi in Kettle/PDI is based on an open source project that hasn’t been updated in about a decade. As there was no reason to keep this functionality in Hop, it was abandoned.
Repositories	gone	Code repositories belong in a VCS these days. We’ve abandoned the file and database (and PDI EE repositories) repositories, but implemented Git integration instead.
-	Projects, Environments, Run Config	The Kettle Environments Plugin has been integrated and significantly extended. Hop now has integrated functionality to support your projects, environments and run configurations. Check the docs.
-	Hop Config	This is a new command line tool to configure your projects, environments and run configurations.

Kettle

Hop

Difference

Spoon

Hop Gui

Spoon has been abandoned. Hop Gui was written from scratch. Check the Getting Started guide or the Hop Gui docs to find out more.

Transformation

Pipeline

No conceptual changes. You’ll develop pipelines just like you would develop a transformation, but a pipeline in Hop can run on different runtimes

Job

Workflow

No conceptual changes. You’ll develop a workflow just like you would develop a job, but a workflow in Hop can run on different runtimes

Step

Transform

No conceptual changes. The underlying code has changed and the dialogs have been updated, but you’ll feel right at home.

Job Entry

Action

No conceptual changes. The underlying code has changed and the dialogs have been updated, but you’ll feel right at home.

Metastore

Metadata

All metadata objects in Hop are stored as metadata. This happens behind the scenes. Except for increased usability, as a Hop developer, you’ll hardly notice.

Carte

Hop Server

Again, smooth sailing. A lot has changed behind the scenes, but you’ll hardly notice. Check the docs

Pan/Kitchen/(Maitre)

Hop Run

Kitchen and Pan depended on the Spoon GUI code. With the rewrite of Spoon to Hop Gui, we’ve recreated the command line tools. We believe this now is more consistent while providing more options and being easier to use at the same time. Check the docs

JNDI

gone

jndi in Kettle/PDI is based on an open source project that hasn’t been updated in about a decade. As there was no reason to keep this functionality in Hop, it was abandoned.

Repositories

gone

Code repositories belong in a VCS these days. We’ve abandoned the file and database (and PDI EE repositories) repositories, but implemented Git integration instead.

Projects, Environments, Run Config

The Kettle Environments Plugin has been integrated and significantly extended. Hop now has integrated functionality to support your projects, environments and run configurations. Check the docs.

Hop Config

This is a new command line tool to configure your projects, environments and run configurations.

Apache Beam

Apache Beam has been deeply integrated in Hop. Beam allows us to run pipelines directly on