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From "Mattmann, Chris A (388J)" <chris.a.mattm...@jpl.nasa.gov>
Subject Re: Graduated projects please tidy up: abdera aries buildr chemistry esme oodt river shiro thrift uima
Date Fri, 04 Mar 2011 00:54:27 GMT

> 
> "dist" is a distribution area - mirrored so that when people download
> they usually end up on a mirror site. This spreads the load of people
> downloading our software. Projects shouldn't be linking to specific
> artifacts in the dist area - they should be linking to a download page
> where links to mirrors are available.

I know that. I wasn't suggesting they link to the direct actual artifacts via dist -- I was
suggesting direct links via dyn/closer.cgi, per practice. 

Either way, those dyn/closer.cgi links are invalidated if we move them out of the dist area.
I could have a release email (and have plenty of times in the past, and seen this in other
projects) where they link to the dyn/closer.cgi for a particular release version. If we "clean"
the dist area (the active archive), all those links are invalid in the mail archives.

There is a concept of "active" archive, and "deep archive".

Dist is the active archive. The archive.apache.org is the "deep archive". Both should exist,
and both should have a copy of the data.

Cheers,
Chris

> 
> Niall
> 
>>> Keeping the dist area tidy with only current releases
>>> means that this huge ASF-wide content is mirrored efficiently.
>> 
>> At what cost? In my mind, there is a subtle point lost here.
>> 
>> Archiving is good and it has to do with mirroring. What i'm advocating for is preservation.
We should never delete the original copy dists for *any project*. It creates disconnects between
the world-wide mirroring system that is called email, and locally caching things, and archiving
and cataloging links.
>> 
>> The cost of invalidating those negates a ton of the savings that you're proposing.
>> 
>>> 
>>> Also, we don't mirror archive.a.o via that dist system.
>> 
>> Gotcha.
>> 
>>> 
>>> I just had a look at Tika download page. It does as i suggested
>>> earlier: They link to
>>> archive.apache.org/dist/tika/
>>> for old releases
>>> and to
>>> archive.apache.org/dist/incubator/tika/
>>> for the older incubator releases.
>> 
>> Yeah I think we updated that. I couldn't remember if we actually directly linked
to incubator.a.o. I think I might have even updated that when I noticed the links were broke
on the site.
>> 
>> Regardless, we should haven't to update it it. I'm proposing that's *it's a good
thing* to have an original + 1 copy from a reliability and software preservation perspective.
>> 
>> Cheers,
>> Chris
>> 
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> Chris Mattmann, Ph.D.
>> Senior Computer Scientist
>> NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
>> Office: 171-266B, Mailstop: 171-246
>> Email: chris.a.mattmann@nasa.gov
>> WWW:   http://sunset.usc.edu/~mattmann/
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> Adjunct Assistant Professor, Computer Science Department
>> University of Southern California, Los Angeles, CA 90089 USA
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> 
>> 
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> 
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> 


++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Chris Mattmann, Ph.D.
Senior Computer Scientist
NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
Office: 171-266B, Mailstop: 171-246
Email: chris.a.mattmann@nasa.gov
WWW:   http://sunset.usc.edu/~mattmann/
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Adjunct Assistant Professor, Computer Science Department
University of Southern California, Los Angeles, CA 90089 USA
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


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