You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@cassandra.apache.org by Ali Ahsan <al...@panasiangroup.com> on 2011/04/12 20:01:24 UTC
Cassandra node's replication factor two with random partition non
Bootstrap node problem
Hi All
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.
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
49-C Jail Road, Lahore, P.O. Box 676
Lahore 54000, Pakistan
Tel: +92 (0)42 3758 7140 Ext. 128
Mobile: +92 (0)345 831 8769
Fax: +92 (0)42 3758 0027
Email: ali.ahsan@panasiangroup.com
www.ebusiness-pg.com
www.panasiangroup.com
Confidentiality: This e-mail and any attachments may be confidential
and/or privileged. If you are not a named recipient, please notify the
sender immediately and do not disclose the contents to another person
use it for any purpose or store or copy the information in any medium.
Internet communications cannot be guaranteed to be timely, secure, error
or virus-free. We do not accept liability for any errors or omissions.
Re: Cassandra node's replication factor two with random partition non
Bootstrap node problem
Posted by Peter Schuller <pe...@infidyne.com>.
> 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