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Message #01042
Re: R: 'Converting' a myisam to multi-master
Hi Federico!
yes, but they don't recommend because the table lock level (not row
level) and no transaction support
in this case (app using myisam/aria today) it's not a problem the app
works nice, but myisam/aria don't have a solution for multimaster yet
:/ i used DRBD some time but it's a master-slave solution
using xtradb cluster, is a problem since index, row size, no
begin/commit at app, and xtradb don't have good min/max/count
optimizations :/
i'm considering reading the galera cluster and maybe add some support
to aria/myisam, but i didn't start anything yet, maybe there's a
easier solution that i didn't know yet...
2013/9/19 Federico Razzoli <federico_raz@xxxxxxxx>:
> The link explains how Percona replicated MyISAM tables in a multimaster environment using XtraDB Cluster + MariaDB. The article also says that Galera supports but doesn't recommend MyISAM.
> I didn't try myself.
>
> Federico
>
> --------------------------------------------
> Gio 19/9/13, Roberto Spadim <roberto@xxxxxxxxxxxxx> ha scritto:
>
> Oggetto: Re: [Maria-discuss] R: 'Converting' a myisam to multi-master
> A: "Federico Razzoli" <federico_raz@xxxxxxxx>
> Cc: "Maria Discuss" <maria-discuss@xxxxxxxxxxxxxxxxxxx>
> Data: Giovedì 19 settembre 2013, 20:44
>
> Hi Federico!I was
> considering a multi master (in same network), without
> xtradb/innodb, since i think i will have problems with row
> size and index, and maybe less performace with
> MIN/MAX/COUNT(*) optimizations of myisam/aria
> anyother solution? async isn't a solution here, i
> was considering a sync solution (near to ndb/galera
> cluster)
>
> 2013/9/19 Federico
> Razzoli <federico_raz@xxxxxxxx>
>
> http://www.mysqlperformanceblog.com/2012/12/18/migrating-several-single-standalone-mysql-server-to-one-percona-xtradb-cluster-mariadb-to-the-rescue/
>
>
>
>
> Federico
>
>
>
>
>
> --------------------------------------------
>
> Gio 19/9/13, Roberto Spadim <roberto@xxxxxxxxxxxxx>
> ha scritto:
>
>
>
> Oggetto: [Maria-discuss] 'Converting' a myisam to
> multi-master
>
> A: "Maria Discuss" <maria-discuss@xxxxxxxxxxxxxxxxxxx>
>
> Data: Giovedì 19 settembre 2013, 19:24
>
>
>
> Hi guys, there's one
>
> easy way to implement a multi-master cluster using
>
> myisam/aria ?i know that galera cluster use innodb
> as
>
> backend, there's anything
> similar to aria/myisam?
>
> scaledb? ndb? others?
>
>
>
> the main problem switching from aria/myisam to
>
> innodb is the MIN/MAX/COUNT(*) optimization and the rows
>
> sizes/index considerations (https://mariadb.com/kb/en/converting-tables-from-myisam-to-innodb/)
>
> and since it's myisam/aria many apps don't use
> begin
>
> transaction / commit (maybe this is a problem for
>
> cluster/multi master?)
>
>
>
> thanks guys :)
>
>
>
> --
>
> Roberto Spadim
>
>
>
>
>
> -----Segue allegato-----
>
>
>
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> _______________________________________________
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>
> --
> Roberto Spadim
> SPAEmpresarial
>
>
>
> _______________________________________________
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--
Roberto Spadim
SPAEmpresarial
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