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From Stian Soiland-Reyes <>
Subject Re: [PROPOSAL] : Airflow
Date Mon, 21 Mar 2016 16:23:34 GMT
Airflow sounds like an interesting workflow project!

You will need to review the licenses of dependencies - some of them
are not compatible with ASF policy [1], e.g.
is LGPL, which is not permitted.

(I didn't check all of them)

You may be able to work around this particular one if you are using
Python's DB API 2.0 and don't have an explicit dependency on psycopg2
(e.g. so a downstream user can reasonably use Airflow without

(Note: you can solve this as part of incubation process - but say if
your project strongly used 15 GPL and LGPL dependencies, then your
project might want to reconsider if it would be worth the effort)

I recognize the challenge of engaging extension developers to also
care about the 'core'. Moving to an "Apache Way" open development will
probably help for this, as all dev discussions are in the open. Is
your plan to move the existing Airflow Google Groups to what will be
the mailing list?

Have you been talking to the SciDap folks doing Common Workflow
Language [3] support with Airflow? That could be one angle to look at
increasing the user base. We're also working on Docker and CWL support
in Apache Taverna [4] - so I'm interested in seeing what we could have
in common!


On 17 March 2016 at 00:28, Siddharth Anand <> wrote:
> Thoughts and comments are welcome!
> -s (Sid)

Stian Soiland-Reyes
Apache Taverna (incubating), Apache Commons RDF (incubating)

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