[Go-essp-tech] Publication, versioning and notification

[Luca Cinquini]

Hi Stephen,
it's good to think of all possible scenarios...

It seems to me like in this case:
o) it would make more sense to change the propose notification system  
to operate on datasets, not single files
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.

thanks, Luca

On Feb 26, 2010, at 4:50 AM, <stephen.pascoe at stfc.ac.uk> <stephen.pascoe at stfc.ac.uk 
 > wrote:

> Another issue with changing the publication granularity.
>
> 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:
>
>  1. A realm-dataset DS1 is published at version v1.
>  2. User A downloads variable V1 from DS1.
>  3. User B downloads all of DS1.
>  4. An error is found in variable V2 of DS1.
>  5. The files for V2 are replaced and DS1 is republished as version  
> v2.
>  6. User B is notified that some files have changed in DS1.
>  7. User A is *not* notified because he never downloaded the files  
> that changed.
>  8. User A & B collaborate discussing the data from DS1 v1.  THEY  
> HAVE DIFFERENT FILES!
>
> If this is how the system is supposed to work it's going to be very  
> confusing.
>
> S.
>
> ---
> Stephen Pascoe  +44 (0)1235 445980
> British Atmospheric Data Centre
> Rutherford Appleton Laboratory
>
>
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