<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Stephen,<div>it's good to think of all possible scenarios...</div><div><br></div><div>It seems to me like in this case:</div><div>o) it would make more sense to change the propose notification system to operate on datasets, not single files</div><div>o) in any case, when the two users compare the plots for variable V1, the first thing they should do is exchange information about which file versions they are using - and they would find they have different versions. If instead they'd rather exchange information about dataset versions, they can do that too, and they would still find they are using different versions.</div><div><br></div><div>thanks, Luca</div><div><br><div><div>On Feb 26, 2010, at 4:50 AM, <<a href="mailto:stephen.pascoe@stfc.ac.uk">stephen.pascoe@stfc.ac.uk</a>> <<a href="mailto:stephen.pascoe@stfc.ac.uk">stephen.pascoe@stfc.ac.uk</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"> <div> <div><font face="Arial" size="2"><span class="009573911-26022010">Another issue with changing the publication granularity.</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"></span></font> </div> <div><font face="Arial" size="2"><span class="009573911-26022010">Will users be notified about changes to files, atomic-datasets or realm-datasets? I think Gavin has said in the past that users will be emailed when *files* change. Consider the scenario:</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"></span></font> </div> <div><font face="Arial" size="2"><span class="009573911-26022010"> 1. A realm-dataset DS1 is published at version v1.</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"> 2. User A downloads variable V1 from DS1.</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"> 3. User B downloads all of DS1.</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"> 4. An error is found in variable V2 of DS1.</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"> 5. The files for V2 are replaced and DS1 is republished as version v2.</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"> 6. User B is notified that some files have changed in DS1.</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"> 7. User A is *not* notified because he never downloaded the files that changed.</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"> 8. User A & B collaborate discussing the data from DS1 v1. THEY HAVE DIFFERENT FILES!</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"></span></font> </div> <div><font face="Arial" size="2"><span class="009573911-26022010">If this is how the system is supposed to work it's going to be very confusing.</span></font></div> <div><font face="Arial" size="2"><span class="009573911-26022010"></span></font> </div> <div><font face="Arial" size="2"><span class="009573911-26022010">S.</span></font></div> <div><font face="Arial" size="2"></font> </div> <div align="left"><font face="Arial" size="2">---</font></div> <div align="left"><font face="Arial" size="2">Stephen Pascoe +44 (0)1235 445980</font></div> <div align="left"><font face="Arial" size="2">British Atmospheric Data Centre</font></div> <div align="left"><font face="Arial" size="2">Rutherford Appleton Laboratory</font></div> <div> </div> <br><p>-- <br>Scanned by iCritical. </p> <br></div> _______________________________________________<br>GO-ESSP-TECH mailing list<br><a href="mailto:GO-ESSP-TECH@ucar.edu">GO-ESSP-TECH@ucar.edu</a><br>http://mailman.ucar.edu/mailman/listinfo/go-essp-tech<br></blockquote></div><br></div></body></html>