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Date: Tue, 11 Apr 2017 11:58:26 -0400
From: Josh Elser <elserj@apache.org>
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To: general@incubator.apache.org
Subject: Re: Apache Metron - licensing question
References: <CAM1mTCrq4nry+SSJ2qBZ_G+3-D6NCwriP0X46Di1Z2A02=iPNw@mail.gmail.com> <CALJK9a4zzhh8UzV8LgDO4Lez_0WapQ4XoHQBNO-sinDt4yOx4g@mail.gmail.com> <CAM1mTCop=vD0EOuJwUtJvxsVz6K6b4xki_sO=e33TN7qL_yO6g@mail.gmail.com>
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archived-at: Tue, 11 Apr 2017 15:58:34 -0000

Also, it may be worth mentioning: Metron is on its way out of the Apache 
Incubator. A vote has recently passed at the Incubator level for their 
graduation. It is likely that after the next ASF board meeting, Metron 
will no longer be a podling.

I am worried that you did not receive a response from the community on a 
previous message. They should be more than capable to answer your 
questions in the future. I'd suggest you re-ping them if your questions 
go unanswered in the future.

Zeolla@GMail.com wrote:
> Ok great, thank you for your feedback.  I did a bit more searching because
> that timeline didn't seem right and found that the original
> bro-kafka-plugin code[1] first appeared in the Metron repo on February 8,
> 2016.  My apologies for not properly linking this in my first email, I
> hadn't realized it was moved.
>
> 1:
> https://github.com/apache/incubator-metron/commit/bc140a571a78c428e9ae5a3315c427724183782f
>
> Much appreciated,
>
> Jon
>
> On Mon, Apr 10, 2017, 11:33 PM Joe Witt<joe.witt@gmail.com>  wrote:
>
>> Jon,
>>
>> It appears that the code at [1] was initially committed on Mar 8,
>> 2016.  The code in Apache Metron [2] was committed on April 13, 2016.
>>
>> The code in Metron [2] appears heavily derived from the code in the
>> initial repository [1].
>>
>> In the Metron repository that code has an ASL v2 license and the
>> Apache license headers.  That, to me, is where the error occurred.
>>
>> When the code was copied over, even if it was the original author
>> doing it, the original license from [1] should be retained/honored and
>> this is very easy to do.  You would simply ensure your source release
>> LICENSE indicates the use of the BSD source.  You would still be free
>> to alter that source code you've pulled into the Metron codebase and
>> build around it as you need. Obviously there are maintenance
>> challenges and tradeoffs to consider but the licensing part can be
>> pretty clear straightforward other than the question of "how much do I
>> have to change the original before it would be appropriate to slap the
>> apache license header on a given source file"?
>>
>> Anyway, I'm not an expert and my advice/interpretation could be wildly
>> inaccurate but this looks like it might have an easy solution so
>> hopefully that helps.
>>
>> [1] https://github.com/bro/bro-plugins/tree/master/kafka
>> [2]
>> https://github.com/apache/incubator-metron/tree/master/metron-sensors/bro-plugin-kafka
>>
>> Thanks
>> Joe
>>
>> On Mon, Apr 10, 2017 at 8:46 PM, Zeolla@GMail.com<zeolla@gmail.com>
>> wrote:
>>> Hi all,
>>>
>>>
>>> I recently asked a licensing question to our dev mailing list.  I did get
>>> feedback
>>> <
>> https://lists.apache.org/thread.html/a4e2e7bb7fb7497033696645b011c5604790f23f3802aaab32f1bd01@%3Cdev.metron.apache.org%3E
>>> from one of our mentors, but he also requested that we get a double
>> check.
>>> Please see below for a bit of background and my questions.  Thanks!
>>>
>>>
>>> *Background*
>>>
>>> We have a situation where a portion of code
>>> <
>> https://github.com/apache/incubator-metron/tree/master/metron-sensors/bro-plugin-kafka
>>> was created for Apache Metron (incubating), which is a plugin for a
>>> separate open source project, bro<https://www.bro.org/>.  The code was
>>> later pushed out by the initial author to the bro community under the
>>> 3-Clause BSD license
>>> <https://github.com/bro/bro-plugins/blob/master/kafka/COPYING>, and
>>> some important
>>> enhancements
>>> <
>> https://github.com/bro/bro-plugins/commit/b9f1f35415cb0db065348da0a5043a8353b4a0a8
>>> have been made to the plugin in that separate community, which we would
>>> like to include in our code, while merging with some recent changes
>>> <
>> https://github.com/apache/incubator-metron/commit/a2452a25caffdd8c35fd9efe0ed49ce0dd2e3781
>>> that have been made in the Metron code base as well (i.e. we are not
>> simply
>>> pulling the code down from the external project).  This was discussed
>>> recently
>>> <
>> https://lists.apache.org/thread.html/c92acd125dae05f0537d4505e0254dfa6382ca9f40edba7d2f4c6224@%3Cdev.metron.apache.org%3E
>>> on the Metron dev mailing list, and we wanted to get some clarification
>>> before moving forward.
>>>
>>>
>>> *Questions*
>>>
>>> 1. Is it valid to assume that, as Casey mentioned
>>> <
>> https://lists.apache.org/thread.html/7468692c96ed0cb012ac9014229694ba8edf3a3b3b55d346eec57019@%3Cdev.metron.apache.org%3E
>>> ,
>>> these are two separate plugins and we can simply make modifications to
>> our
>>> code base to resolve the current multithreading issue?
>>>
>>> 2. If we do 1, will this require a line in our LICENSE file as a
>> derivative
>>> work, or anything else?
>>>
>>>
>>> Thanks,
>>>
>>> Jon
>>> --
>>>
>>> Jon
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>> --
>
> Jon
>

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