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[netCDF #TMR-458993]: Failure to handle GDS server-side analysis URL with netcdf 4.3.2

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  • Subject: [netCDF #TMR-458993]: Failure to handle GDS server-side analysis URL with netcdf 4.3.2
  • Date: Thu, 03 Jul 2014 12:12:03 -0600
My last explanation was incorrect.
I did some experimenting and found that
the reason that foo failed is because
the libdap library prefetches small variables
as a whole. Ncdump has nothing to do with it.
So for foo, it is so small that the whole thing
is prefetched (without any constraints).
The gfs dataset prefetches only the four variables
time,lev,lat,lon, but it does so with a single request,
hence it has the constraint ?time,lev,lat,lon.
All of the bigger variables in gfs are retrieved
piecemeal by ncdump, so they have a constraint also.

There is a workaround. If you append #noprefetch
to your url, i.e.
   http://www.monsoondata.org:9191/dods/foo#noprefetch
then ncdump will work correctly.
=Dennis Heimbigner
  Unidata


Ticket Details
===================
Ticket ID: TMR-458993
Department: Support netCDF
Priority: Urgent
Status: Closed