[Go-essp-tech] verification of datanode status
Estanislao Gonzalez
gonzalez at dkrz.de
Mon Dec 19 06:04:28 MST 2011
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
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