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From Sávio Teles <savio.te...@lupa.inf.ufg.br>
Subject Re: Force data to a specific node
Date Thu, 03 Jan 2013 13:58:29 GMT
Hi Dominique,

I have the same problem! I would like to place an object in a specific node
because I'm working in a spatial application. How should I choose the K1
part to forcing a given object to go to a node?


2013/1/3 DE VITO Dominique <dominique.devito@thalesgroup.com>

>   Hi Everton,****
>
> ** **
>
> AFAIK, the pb is not forcing data to a specific node, but forcing some
> kind of data locality.****
>
> ** **
>
> There is things into cql to do it: you define a composite key (K1, K2),
> and K1 part is used as a rowkey and K2 is used within column name. So, all
> rows with same K1 are on the same node.****
>
> ** **
>
> See also https://issues.apache.org/jira/browse/CASSANDRA-5054 ****
>
> ** **
>
> Dominique****
>
> ** **
>
> ** **
>
> *De :* Everton Lima [mailto:peitin.inutil@gmail.com]
> *Envoyé :* mercredi 2 janvier 2013 19:20
> *À :* user@cassandra.apache.org
> *Objet :* Re: Force data to a specific node****
>
> ** **
>
> We need to do this to minimize the network I/O. We have our own load data
> balance algorithm. We have some data that is best to process in a local
> machine.
> Is it possible? How?****
>
> 2013/1/2 Edward Sargisson <Edward.Sargisson@globalrelay.net>****
>
> Why would you want to?****
>
> ** **
>  ------------------------------
>
> *From*: Everton Lima <peitin.inutil@gmail.com>
> *To*: Cassandra-User <user@cassandra.apache.org>
> *Sent*: Wed Jan 02 18:03:49 2013
> *Subject*: Force data to a specific node ****
>
> It is possible to force a data to stay in a specific node?
>
> --
> Everton Lima Aleixo
> Bacharel em Ciência da Computação pela UFG****
>
> Mestrando em Ciência da Computação pela UFG****
>
> Programador no LUPA****
>
> ** **
>
>
>
>
> --
> Everton Lima Aleixo
> Bacharel em Ciência da Computação pela UFG****
>
> Mestrando em Ciência da Computação pela UFG****
>
> Programador no LUPA****
>
> ** **
>



-- 
Atenciosamente,
Sávio S. Teles de Oliveira
voice: +55 62 9136 6996
http://br.linkedin.com/in/savioteles
Mestrando em Ciências da Computação - UFG
Arquiteto de Software
Laboratory for Ubiquitous and Pervasive Applications (LUPA) - UFG

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