Hi,

> The NOTICE files are added to the .jar files by a plugin that is setup in
> the Apache POM.

It should be possible to get it to use our NOTICE file. Sorry I don’t know 
enough about how that all works to be able to suggest how to do that. Perhaps 
another mentor does?

> I see examples of not matching the top level NOTICE elsewhere where this
> POM is used.

In projects that produce multiple jars the notice in each jar may be different, 
as it depends on the jars contents, so it could be that you are seeing. Read 
the guiding priniciple [1] and note that it applies to binaries as well [2]. At 
some point I assume you may want to ship a convenience binary to users?

> I also see other releases with .jar artifacts that have no NOTICE file in it.

That’s not in line with current Apache policy. See [3].
"Again, these artifacts may be distributed only if they contain LICENSE and 
NOTICE files. For example, the Java artifact format is based on a compressed 
directory structure and those projects wishing to distribute jars must place 
LICENSE and NOTICE files in the META-INF directory within the jar."

You might want to look at similar JIRA issues here [4] and in particular this 
one:
https://issues.apache.org/jira/browse/LEGAL-178

BTW as long as you raise a JIRA about this I don't think this need to be fixed 
right away and can wait for a future incubating release. I wouldn’t expect any 
IPMC member to consider this a blocking issue for a first release. (And if they 
do point them to the JIRA).

> What is your recommendation, same NOTICE file in all .jar artifacts or
> generated NOTICE file with (changed) name of module?

It depends on the contents of each jar, again see 1 and 2. In Apex case it may 
be that they are all the same, I’d need to take a close look at the jar’s 
contents to determine.

Thanks,
Justin

1. http://www.apache.org/dev/licensing-howto.html#guiding-principle
2. http://www.apache.org/dev/licensing-howto.html#binary
3. http://www.apache.org/dev/release.html#distribute-other-artifacts
4. 
https://issues.apache.org/jira/browse/TAVERNA-864?jql=text%20~%20%22META-INF%20NOTICE%22

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