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From Koert Kuipers <ko...@tresata.com>
Subject Re: one column family but lots of tables
Date Thu, 22 Aug 2013 19:30:48 GMT
if that is the case, how come people keep warning about limiting the number
of column families to only a handful (with more hbase performance will
degrade supposedly), yet there seems to be no similar warnings for number
of tables? see for example here:

if a table means at least one column family then the number of tables
should also be kept to a minumum, no?

On Thu, Aug 22, 2013 at 1:58 PM, Vladimir Rodionov

> Nope. Column family is per table (its sub-directory inside your table
> directory in HDFS).
> If you have N tables you will always have , at least, N distinct CFs (even
> if they have the same name).
> Best regards,
> Vladimir Rodionov
> Principal Platform Engineer
> Carrier IQ, www.carrieriq.com
> e-mail: vrodionov@carrieriq.com
> ________________________________________
> From: Koert Kuipers [koert@tresata.com]
> Sent: Thursday, August 22, 2013 8:06 AM
> To: user@hbase.apache.org
> Subject: one column family but lots of tables
> i read in multiple places that i should try to limit the number of column
> families in hbase.
> do i understand it correctly that when i create lots of tables, but they
> all use the same column family (by name), that i am just using one column
> family and i am OK with respect to limiting number of column families ?
> thanks! koert
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