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Posted to user@cassandra.apache.org by Peter Schuller <pe...@infidyne.com> on 2011/04/12 22:43:03 UTC
Re: Cassandra node's replication factor two with random partition non
Bootstrap node problem
> I have two cassandra node's,If Boot strapped nodes goes down my service
> remains alive,But if my non Bootstrap (master) node goes down my live site
> goes down as well,I am using cassandra 0.6.3 can any elaborate on this
> problem.
Assuming your RF is 2 (not 1), and that you are reading at consistency
level ONE (not QUORUM, which would be 2 in the case of RF=2),
single-node failures should be tolerated.
In order for people to help you'd have to specify some more
informaton. For example, your "site goes down" - but what is the
actual error condition w.r.t. Cassandra? What is the error reported by
the Cassandra client (and which client is it)?
I'm not sure what you mean w.r.t. boostrap/master etc. All nodes
should be entirely equal, with the exception of nodes that are marked
as seed nodes. But seed nodes going down should not cause reads and
writes to fail.
--
/ Peter Schuller
Re: Cassandra node's replication factor two with random partition
non Bootstrap node problem
Posted by Ali Ahsan <al...@panasiangroup.com>.
This solved we are doing some thing wrong in our application thanks for
your help.
On 04/13/2011 01:43 AM, Peter Schuller wrote:
>> I have two cassandra node's,If Boot strapped nodes goes down my service
>> remains alive,But if my non Bootstrap (master) node goes down my live site
>> goes down as well,I am using cassandra 0.6.3 can any elaborate on this
>> problem.
> Assuming your RF is 2 (not 1), and that you are reading at consistency
> level ONE (not QUORUM, which would be 2 in the case of RF=2),
> single-node failures should be tolerated.
>
> In order for people to help you'd have to specify some more
> informaton. For example, your "site goes down" - but what is the
> actual error condition w.r.t. Cassandra? What is the error reported by
> the Cassandra client (and which client is it)?
>
> I'm not sure what you mean w.r.t. boostrap/master etc. All nodes
> should be entirely equal, with the exception of nodes that are marked
> as seed nodes. But seed nodes going down should not cause reads and
> writes to fail.
>
--
S.Ali Ahsan
Senior System Engineer
e-Business (Pvt) Ltd
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