Another consistency level problem

[Everton Lima <pe...@gmail.com>]

Hello people, I was having the following problem:

I was running a single node of Cassandra, using cassandra's consistency
level ALL. My program (in java) is a B-Tree like and a node store how many
childrens it has. In every update my app do, like a insert of a new
children, it do a commit, saving the update in commitlog.  But the problem
is: when I try to recover the value of how many children a node has (when
it should answer 0) it answer 4 or 5 (not deterministic). The interesting
is that if I put a Thread.sleep(1), it works right.

Some one know why this happen? And a manner to fix it?

Since now thanks.

-- 

Everton Lima Aleixo
Bacharel em Ciencia da Computação
Universidade Federal de Goiás

Re: Another consistency level problem

[aaron morton <aa...@thelastpickle.com>]

Sounds like a problem in your code. 

You will have consistent behaviour when running a single cassandra node and CL ALL.

Cheers
 
-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com

On 20/03/2012, at 1:54 AM, Everton Lima wrote:

> Hello people, I was having the following problem:
> 
> I was running a single node of Cassandra, using cassandra's consistency level ALL. My program (in java) is a B-Tree like and a node store how many childrens it has. In every update my app do, like a insert of a new children, it do a commit, saving the update in commitlog.  But the problem is: when I try to recover the value of how many children a node has (when it should answer 0) it answer 4 or 5 (not deterministic). The interesting is that if I put a Thread.sleep(1), it works right.
> 
> Some one know why this happen? And a manner to fix it?
> 
> Since now thanks.
> 
> -- 
> 
> Everton Lima Aleixo
> Bacharel em Ciencia da Computação
> Universidade Federal de Goiás