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Hi,<br>
<br>
the Tracking_id is generated by cmor, so if the files are
re-concatenated using any other tool (e.g. cdo) then it should be
left as is. This has the benefit of not altering the checksum and
thus marking the file as it is. So basically a renaming should
trigger a new version but should not alter the files in any other
way (i.e. same checksum).<br>
<br>
And indeed Stephen, the checksums alone are "enough" but it's not
practical for any other purposes (until we have a service to reverse
search to files).<br>
I would say URL + checksum is enough information (that's more than
the filename). The filename alone it's ok, but you will have to look
for the dataset version...<br>
<br>
So either dataset_id + version + file_name + checksum or url +
checksum, which is the general case of the former.<br>
<br>
Url + checksum is already being stored in the wget script, so that
file would be the key for citing/finding files.<br>
My advice: store it together with the data (which I know most people
are doing already). <br>
<br>
...I'm already changing the subject of this thread... sorry for
that.<br>
<br>
Thanks,<br>
Estani<br>
Am 15.02.2012 11:44, schrieb <a class="moz-txt-link-abbreviated" href="mailto:stephen.pascoe@stfc.ac.uk:">stephen.pascoe@stfc.ac.uk:</a>
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<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi
all,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">This
subject is full of gray areas :-(. I would say keeping the
tracking_id the same is ok as it is an indication that the
contents of the NetCDF hasn't changed.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Practical
matters for CMIP5 aside, I've been thinking about how we
could create an unambiguous manifest of a dataset-version.
I.e. containing enough information to uniquely identify it's
contents without any extraneous information that might
change with dataset location, available services, etc. . I
came to the conclusion there are 2 possible solutions:
either a it's a sorted list of (filename, checksum) pairs or
it's just a sorted list of checksums. The difference is
whether filenames are "part of the dataset". My instinct is
that you can't decouple filenames from the dataset. Users
expect filenames to be meaningful and in some contexts
information inside files could refer to filenames within the
dataset (e.g. gridspec files). This is how every other
contents-based versioning/packaging system I know of works:
git, BagIt, BitTorrent<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">So,
that's a long way of saying a new version would be
necessary, on theoretical grounds as well as pragmatic ones.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Stephen.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:Consolas;color:#1F497D">---<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:Consolas;color:#1F497D">Stephen
Pascoe +44 (0)1235 445980<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:Consolas;color:#1F497D">Centre
of Environmental Data Archival<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:Consolas;color:#1F497D">STFC
Rutherford Appleton Laboratory, Harwell Oxford, Didcot
OX11 0QX, UK<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US"> <a class="moz-txt-link-abbreviated" href="mailto:go-essp-tech-bounces@ucar.edu">go-essp-tech-bounces@ucar.edu</a>
[<a class="moz-txt-link-freetext" href="mailto:go-essp-tech-bounces@ucar.edu">mailto:go-essp-tech-bounces@ucar.edu</a>] <b>On Behalf Of
</b>Kettleborough, Jamie<br>
<b>Sent:</b> 15 February 2012 10:20<br>
<b>To:</b> Estanislao Gonzalez; <a class="moz-txt-link-abbreviated" href="mailto:go-essp-tech@ucar.edu">go-essp-tech@ucar.edu</a><br>
<b>Subject:</b> Re: [Go-essp-tech] Incorrect file names?<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">Thanks
Estani,</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">do
you have any thoughts on the tracking_id? Should this be
left as is (I think what you say below implies it should).</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">Jamie</span><o:p></o:p></p>
<blockquote style="border:none;border-left:solid blue
1.5pt;padding:0cm 0cm 0cm
4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
<p class="MsoNormal"><o:p> </o:p></p>
<div class="MsoNormal" style="text-align:center"
align="center"><span lang="EN-US">
<hr align="center" size="2" width="100%">
</span></div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US"> <a class="moz-txt-link-abbreviated" href="mailto:go-essp-tech-bounces@ucar.edu">go-essp-tech-bounces@ucar.edu</a>
[<a class="moz-txt-link-freetext" href="mailto:go-essp-tech-bounces@ucar.edu">mailto:go-essp-tech-bounces@ucar.edu</a>]
<b>On Behalf Of </b>Estanislao Gonzalez<br>
<b>Sent:</b> 15 February 2012 10:06<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:go-essp-tech@ucar.edu">go-essp-tech@ucar.edu</a><br>
<b>Subject:</b> Re: [Go-essp-tech] Incorrect file names?</span><span
lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal">Hi,<br>
<br>
it's required a new version to be published, so that its
publication will signal that something has changed. If not,
then it won't be picked up by other services, e.g. replica
services, as it would assume the data hasn't been changed at
all.<br>
In our particular case (DKRZ) we will see files haven't been
changed, provided that the checksums are properly published,
and will just link them to the older ones, allowing users to
get both versions (i.e. users that are already downloading
files will be able to keep downloading them, and not have to
start everything anew because of this renaming)<br>
(I can't see if the checksums are there because the node is
not accessible at this time)<br>
<br>
We could use that information to infer what happened and
display it under the history information.<br>
<br>
Maintaining the same version provides no benefit for the
publisher at all and creates the same confusion to the user
(which will see that files are missing).<br>
<br>
Just my 2c,<br>
Estani<br>
<br>
Am 15.02.2012 10:29, schrieb Kettleborough, Jamie: <o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">Hello,</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">sorry,
a but of a side track, but maybe useful. I know this is
an unusual case - but it is another example of an
understandable slip that can be made when producing data.
When Laura republishes these should it be under a new
publication data set version or not? I think the only
thing that is changing is the filename - is that right? I
don't think this warrants a new publication data set
version, but could be wrong.</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:blue">Jamie</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<div class="MsoNormal" style="text-align:center"
align="center">
<hr align="center" size="2" width="100%">
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a moz-do-not-send="true"
href="mailto:go-essp-tech-bounces@ucar.edu">go-essp-tech-bounces@ucar.edu</a>
[<a moz-do-not-send="true"
href="mailto:go-essp-tech-bounces@ucar.edu">mailto:go-essp-tech-bounces@ucar.edu</a>]
<b>On Behalf Of </b>Laura Carriere<br>
<b>Sent:</b> 14 February 2012 19:43<br>
<b>To:</b> Jennifer Adams<br>
<b>Cc:</b> <a moz-do-not-send="true"
href="mailto:go-essp-tech@ucar.edu">go-essp-tech@ucar.edu</a><br>
<b>Subject:</b> Re: [Go-essp-tech] Incorrect file names?</span><o:p></o:p></p>
<blockquote style="border:none;border-left:solid blue
1.5pt;padding:0cm 0cm 0cm
4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt">
<p class="MsoNormal"><br>
Ah, now I see your reply. Since you have a solution to
your immediate problem, I will not rush the republish but
will have it done as soon as it's convenient. Thanks.<br>
<br>
Laura.<br>
<br>
On 2/14/2012 2:32 PM, Jennifer Adams wrote: <o:p></o:p></p>
<p class="MsoNormal">Oh dear. Rather than renaming the
files, I used a set of symlinks to solve my immediate
problem, but I still find this a bit troubling. I will
have to check all GEOS-5 data files I grab from now on. I
asked Larry Marx to check if any of COLA's CMIP5 data at
NASA have 8-digit date stamps, and he found everything to
be correct with only YYYYMM date strings.
<o:p></o:p></p>
<div>
<p class="MsoNormal">--Jennifer<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Feb 14, 2012, at 1:29 PM,
Laura Carriere wrote:<o:p></o:p></p>
</div>
<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<div>
<p class="MsoNormal"><br>
Quick answer on my way to a meeting - CMOR2 was
used for this and at least one other dataset
that we have (from COLA) that also has the
yyyymmdd format. I'll ask a few other questions
after my meeting but that's the short answer.<br>
<br>
Laura.<br>
<br>
On 2/14/2012 1:21 PM, Karl Taylor wrote: <o:p></o:p></p>
<p class="MsoNormal">Dear Novice (with clearly
more knowledge than most so-called experts),<br>
<br>
I'm copying a contact for the GEOS-5 model who
may be able to provide some information on
this. I can't explain why the monthly file
names are inconsistent with what CMOR2 puts
out. Maybe CMOR2 wasn't used. The DRS document
doesn't absolutely forbid including more
precision than necessary in specifying the
time-periods, so I don't think we can force them
to rename their files. That being said, my hope
was everyone would use CMOR, so the file names
would all follow the same template.<br>
<br>
Karl<br>
<br>
On 2/13/12 9:30 AM, Jennifer Adams wrote: <o:p></o:p></p>
<div>
<p class="MsoNormal">Dear Experts, <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Here is a dataset:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><a moz-do-not-send="true"
href="http://pcmdi3.llnl.gov/esgcet/dataset/cmip5.output1.NASA-GMAO.GEOS-5.decadal1960.mon.atmos.Amon.r1i1p1.html">http://pcmdi3.llnl.gov/esgcet/dataset/cmip5.output1.NASA-GMAO.GEOS-5.decadal1960.mon.atmos.Amon.r1i1p1.html</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">And here is the file name
template for all the variables in this
dataset: <o:p></o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"><varname>_Amon_GEOS-5_decadal1960_r1i1p1_19610116-19701216.nc <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">My script to generate a
GrADS descriptor for this file barked
because the MONTHLY data file has time
stamps in the YYYYMMDD format. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">If I have read the DRS
document correctly, this a not a correct
file name. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Shouldn't I be able to
assume that monthly files will have only
YYYYMM date strings? <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">--Jennifer<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt">--<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt">Jennifer M.
Adams<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt">IGES/COLA<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt">4041 Powder Mill
Road, Suite 302<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt">Calverton, MD
20705<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt"><a
moz-do-not-send="true"
href="mailto:jma@cola.iges.org">jma@cola.iges.org</a><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><br>
<br>
<br>
<o:p></o:p></p>
<pre>-- <o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre> Laura Carriere, SAIC <a moz-do-not-send="true" href="mailto:laura.carriere@nasa.gov">laura.carriere@nasa.gov</a><o:p></o:p></pre>
<pre> NCCS, Code 606.2 301 614-5064<o:p></o:p></pre>
</div>
<p class="MsoNormal">_______________________________________________<br>
GO-ESSP-TECH mailing list<br>
<a moz-do-not-send="true"
href="mailto:GO-ESSP-TECH@ucar.edu">GO-ESSP-TECH@ucar.edu</a><br>
<a moz-do-not-send="true"
href="http://mailman.ucar.edu/mailman/listinfo/go-essp-tech">http://mailman.ucar.edu/mailman/listinfo/go-essp-tech</a><o:p></o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Helvetica","sans-serif"">--<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Helvetica","sans-serif"">Jennifer
M. Adams<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Helvetica","sans-serif"">IGES/COLA<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Helvetica","sans-serif"">4041
Powder Mill Road, Suite 302<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Helvetica","sans-serif"">Calverton,
MD 20705<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Helvetica","sans-serif""><a
moz-do-not-send="true"
href="mailto:jma@cola.iges.org">jma@cola.iges.org</a><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Helvetica","sans-serif""><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Helvetica","sans-serif""><br>
<br>
</span><o:p></o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
</div>
<p class="MsoNormal"><br>
<br>
<br>
<o:p></o:p></p>
<pre>-- <o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre> Laura Carriere, SAIC <a moz-do-not-send="true" href="mailto:laura.carriere@nasa.gov">laura.carriere@nasa.gov</a><o:p></o:p></pre>
<pre> NCCS, Code 606.2 301 614-5064<o:p></o:p></pre>
</blockquote>
<p class="MsoNormal"><br>
<br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>GO-ESSP-TECH mailing list<o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="mailto:GO-ESSP-TECH@ucar.edu">GO-ESSP-TECH@ucar.edu</a><o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="http://mailman.ucar.edu/mailman/listinfo/go-essp-tech">http://mailman.ucar.edu/mailman/listinfo/go-essp-tech</a><o:p></o:p></pre>
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<pre>Estanislao Gonzalez<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Max-Planck-Institut für Meteorologie (MPI-M)<o:p></o:p></pre>
<pre>Deutsches Klimarechenzentrum (DKRZ) - German Climate Computing Centre<o:p></o:p></pre>
<pre>Room 108 - Bundesstrasse 45a, D-20146 Hamburg, Germany<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Phone: +49 (40) 46 00 94-126<o:p></o:p></pre>
<pre>E-Mail: <a moz-do-not-send="true" href="mailto:gonzalez@dkrz.de">gonzalez@dkrz.de</a> <o:p></o:p></pre>
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Estanislao Gonzalez
Max-Planck-Institut für Meteorologie (MPI-M)
Deutsches Klimarechenzentrum (DKRZ) - German Climate Computing Centre
Room 108 - Bundesstrasse 45a, D-20146 Hamburg, Germany
Phone: +49 (40) 46 00 94-126
E-Mail: <a class="moz-txt-link-abbreviated" href="mailto:gonzalez@dkrz.de">gonzalez@dkrz.de</a> </pre>
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