cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Benjamin Black...@b3k.us>
Subject Re: Seeds, autobootstrap nodes, and replication factor
Date Sat, 05 Jun 2010 02:14:28 GMT
On Fri, Jun 4, 2010 at 6:51 PM,  <pstanhope@wimba.com> wrote:
> I never said it would be frequent. That was an assumption made by Ben.
>

You indicated in an earlier email that you expected half the nodes to
be offline at any time.  It is unclear how you expected that to work
for either the consistency processes or the topology/placement
processes.

> I am trying to understand how to "set the dials" to ensure availability and durability
... And understand the cost when the inevitable hardware failure occurs.
>

You can expect that with RF=N, your cluster will get slower the larger
it gets.  Add in having half the nodes offline, and you can expect it
simply not to function most of the time.  Perhaps if you started from
what your availability and durability requirements are the
conversation would be simpler.


b

Mime
View raw message