hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From N Keywal <nkey...@gmail.com>
Subject Re: Maximum number of tables ?
Date Fri, 13 Jul 2012 08:14:44 GMT

There is no real limits as far as I know. As you will have one region
per table (at least :-), the number of region will be something to
monitor carefully  if you need thousands of table. See

Don't forget that you can add as many column as you want, and that an
empty cell cost nothing. For example, a class hierarchy is often
mapped to multiple tables in a RDBMS, while in HBase having a single
table for the same hierarchy makes much more sense. Moreover, there is
no transaction between tables, so sometimes a 'uml composition' will
go to a single table. And so on.


On Fri, Jul 13, 2012 at 9:04 AM, Adrien Mogenet
<adrien.mogenet@gmail.com> wrote:
> Hi there,
> I read some good practices about number of columns / column families, but
> nothing about the number of tables.
> What if I need to spread my data among hundred or thousand (big) tables ?
> What should I care about ? I guess I should keep a tight number of
> storeFiles per RegionServer ?
> --
> Adrien Mogenet
> http://www.mogenet.me

View raw message