[Go-essp-tech] verification of datanode status

[Estanislao Gonzalez]

Hi Luca,

That's not what Henrik meant. Neither the architecture retains a living 
link to a data nose (not an index one, as you've pointed out)

This is a feature IMO as the search engine is detached from the 
dataone. The index might indeed "prune" the data nodes down, but unless 
this is done synchroneusly it would difficult the federation 
interaction.
Or to say it differently: Is up to the data node to assure data is 
available, and if that's not desired anymore, On 19.12.2011 07:15, 
Cinquini, Luca (3880) wrote:
> Hi Henirik,
> 	not sure about the gateway, but this is a feature the P2P system
> does have: has soon as a datanode is inaccessible, the search
> automatically prunes that node away, so the search results never
> contain dead links.
> thanks, Luca
>
> On Dec 19, 2011, at 3:58 AM, Henrik Wiberg wrote:
>
>> Does the gateway somehow 'ping' its registered datanodes to verify 
>> that
>> they are accessible? The datanode at dmi has not been running for 5
>> mounts still the datanodes published datasets are searchable and
>> displayed at the gateway cmip-gw-badc. Should not inaccessible 
>> datasets
>> be removed from the search result?
>>
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-- 
Estanislao Gonzalez

Max-Planck-Institut für Meteorologie (MPI-M)
Deutsches Klimarechenzentrum (DKRZ) - German Climate Computing Centre
Room 108 - Bundesstrasse 45a, D-20146 Hamburg, Germany

Phone:   +49 (40) 46 00 94-126
E-Mail:  gonzalez at dkrz.de