Обсуждение: AW: Scalability, Clustering

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AW: Scalability, Clustering

От
Zeugswetter Andreas SB
Дата:
>   I know that someone was working on a commercial extension to PostgreSQL
> to add clustering based on a shared disk system.  Basically he was added a
> raw storage manager to PostgreSQL plus a lock manager to co-oridinate
> access to the shared disk.  That way the two nodes could co-ordinate
> access to the shared disk.  This is very similar to Oracle Parallel
Server.

This is sad. Good Cluster DB design is based on shared nothing architecture 
and "function shipping". OPS is known to have a bad and antiquated
architecture
that only works well with extremely well thought out application design.

Andreas


Re: AW: Scalability, Clustering

От
"Valter Mazzola"
Дата:
Mariposa (http://mariposa.CS.Berkeley.EDU/download.html) has a BSD licence 
but it refers to Postgres95.
Mariposa is a patch aganist postgres sources and alpha release, there are a 
lot of Papers describing this.
I've compiled under linux but no success.

It's possible that there isn't a solution or a trick to load-balance 
postgres (at least cpu load balancing with a central high speed location for 
data-bases) ?


thank you for your reply.

valter

>From: Zeugswetter Andreas SB <ZeugswetterA@wien.spardat.at>
>To: "'Tom Samplonius'" <tom@sdf.com>, Valter Mazzola <txian@hotmail.com>
>CC: pgsql-hackers@postgresql.org
>Subject: AW: [HACKERS] Scalability, Clustering
>Date: Mon, 11 Sep 2000 10:41:50 +0200
>
>
> >   I know that someone was working on a commercial extension to 
>PostgreSQL
> > to add clustering based on a shared disk system.  Basically he was added 
>a
> > raw storage manager to PostgreSQL plus a lock manager to co-oridinate
> > access to the shared disk.  That way the two nodes could co-ordinate
> > access to the shared disk.  This is very similar to Oracle Parallel
>Server.
>
>This is sad. Good Cluster DB design is based on shared nothing architecture
>and "function shipping". OPS is known to have a bad and antiquated
>architecture
>that only works well with extremely well thought out application design.
>
>Andreas

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