[gfs-wg] Latest GFS-WG Namespace Service Specification Document

[Reagan Moore]

I would add several more caveats to the list of items that must still 
be addressed:

- scalability.  How many files is the system designed to handle?  We 
now support over 50 million files in the SRB data grid.  Collections 
with millions of files are not uncommon.  Will APIs for manipulating 
large collections be available?
- latency management.  One of the concerns in data grids is 
interactive response on "ls" style commands.  An example is issuing a 
"ls" command on the East Coast of the US when the catalog is on the 
West Coast.  This required minimization of the amount of mark-up tags 
and extraneous information that are sent when listing large 
collections.  It is not obvious that the XML syntax will meet 
interactivity requirements for large data grids.
- access controls.  This is listed as a concern in the document.  The 
SRB data grid has had to support multiple types of access 
constraints, including:
   - do not display logical file names when access is not permitted
   - do not display selected file properties for all files
Access controls will be needed for both files and metadata.

Reagan Moore


>Hello Everyone,
>
>I have just posted the most recent revision of our namespace service
>specification document[1].  I encourage everyone to take a look, since this
>revision introduces a significant number of changes.  First the title has
>been adjusted to more accurately reflect the features and capabilities of
>the service to Resource Namespace Service (RNS).  Second, the portType
>interface has been substantially revised to reflect a WSRF compliant
>implementation that utilizes document style message exchanges rather than
>our previous serialized object orientation.
>
>I look forward to working with you in making this service a reality.
>
>[1]
>https://forge.gridforum.org/projects/gfs-wg/document/Resource_Namespace_Service_-_Specification/en/1
>
>Best regards,
>Manuel Pereira
>===============================
>IBM Almaden Research Center
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>650 Harry Road, San Jose, CA 95120
>1-408-927-1935  [T/L 457]
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>http://mvp3.almaden.ibm.com
>mpereira at us.ibm.com