Workflow executor

The step “Workflow executor” with a pipeline in Apache Hop allows you to execute the same workflow for several rows. Values from those rows can be passed down to the workflow as parameters. E.g.

Parent Workflow:

Sub-Workflow (executed for each row), using parameters


Run PDI or Apache Hop on Apple M1

Currently PDI and Apache Hop do not run natively on M1. There are reports using the ARM optimised Azul JDK, but this was not working for me, as the newest STW Library is not yet ARM compatible.

Instead the following procedure worked for me on my Apple Macbook M1 (1st Gen).

Installation JDK 8.

If other JVMs are installed, they should be selected as follows:

Which Java versions do I have installed?

/usr/libexec/java_home -V

results in my case Matching Java Virtual Machines (3):

16.0.2 (x86_64) "Oracle Corporation" - "Java SE 16.0.2" /Library/Java/JavaVirtualMachines/jdk-16.0.2.jdk/Contents/Home

1.8.0_302 (arm64) "Azul Systems, Inc." - "Zulu" /Library/Java/JavaVirtualMachines/zulu-8.jdk/Contents/Home

1.8.0_301 (x86_64) "Oracle Corporation" - "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_301.jdk/Contents/Home

Set Java_HOME Path correctly:


export JAVA_HOME=$(/usr/libexec/java_home -v "1.8.0_301")

Check selected JVM
java -version


Set terminal to Intel mode according to:

And replace SWT.jar library (according to previous step)

With that changes, you can start PDI and Apache Hop on M1