FYI: This is a good reference on how to use MIT (and other Apache friendly)
license source code in the project. I think we need do a round of check
before next release.

---------- Forwarded message ----------
From: Bolke de Bruin <>
Date: 2018-04-08 2:29 GMT+08:00
Subject: Re: Can I copy/paste codes under MIT license into Airflow

You can include it but the original license needs to be added to
licenses/xx and a reference needs to be made in LICENSE.

In addition depending on the rework you will be doing, the header needs to
be MIT.


Sent from my iPhone

> On 7 Apr 2018, at 20:23, Taylor Edmiston <> wrote:
> IANAL, but there are already other MIT licensed dependencies included
> today, so I think you're fine.
> Has anyone looked at setting up FOSSA ( on Airflow?  It
> looks free for open source, and I believe they scan dependency licenses
> recursively.
> *Taylor Edmiston*
> <> | Blog
> <>
> Stack Overflow CV <> | LinkedIn
> <> | AngelList
> <>
>> On Fri, Apr 6, 2018 at 7:29 PM, <>
>> Hi All,
>> Greetings. I am writing unit tests for some Elasticsearch related changes
>> and want to use this library:
>> for mocking. Unfortunately it is not working with current version of
>> elasticsearch and elasticsearch_dsl libs so I had to copy/paste the code
>> and make some changes to it to make it work. However, this lib is under
>> license, is it fine to do what I'm doing? If not, is using lib under MIT
>> license in Airflow allowed at all?
>> Thank you all in advance,
>> Kevin Yang
>> Airbnb

Best regards,

Shaofeng Shi 史少锋

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