On Tue, Nov 25, 2014 at 9:07 AM, Raj N <raj.cassan...@gmail.com> wrote:

> What's the latest on the maximum number of keyspaces and/or tables that
> one can have in Cassandra 2.1.x?
>

Most relevant changes lately would be :

https://issues.apache.org/jira/browse/CASSANDRA-6689
and
https://issues.apache.org/jira/browse/CASSANDRA-6694

Which should meaningfully reduce the amount of heap memtables consume. That
heap can then be used to support more heap-persistent structures associated
with many CFs. I have no idea how to estimate the scale of the improvement.

As a general/meta statement, Cassandra is very multi-threaded, and consumes
file handles like crazy. How many different query cases do you really want
to put on one cluster/node? ;D

=Rob

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