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[THREDDS #FAQ-337688]: union aggregation and cache

Hi Massimiliano,

There isn't currently a way to configure the TDS aggregation dataset access 
patterns. However, we would like to keep the data access limited to the 
datasets required to satisfy the query. So, we will look into this and see what 
we can do.

Could you send us three days worth of the datasets behind your nested 
aggregation that we can use to debug this? Or you could add a dataset to your 
configuration that serves the individual files using an HTTPServer service 

<service name="fileServer" serviceType="HTTPServer" base="/thredds/fileServer/" 

and we can grab a few days worth of sample files.



Massimiliano Drudi wrote:
> Dear Ethan
> we are testing Thredds 4.2.20100825.2246 .
> Our link is
> http://gnoodap.bo.ingv.it:8080/thredds/catalog.html
> The attached file is the xml used in our test. That xml is on internet
> at this link:
> http://gnoodap.bo.ingv.it:8080/thredds/MYOv01-MFS-AN.html
> I experienced what you wrote in the case of the joinExisting aggregation.
> But in the case of the nested aggregation joinExisting+union , in
> order to handle each request, it opens (=unzip) all the files
> corresponding to the day. Is it possible configure the system in order
> to unzip the only one file corresponding to the day and containing the
> requested variable?
> Regards,
> Massimiliano

Ticket Details
Ticket ID: FAQ-337688
Department: Support THREDDS
Priority: Emergency
Status: Closed

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