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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: strange load balancing across three nodes
Date Sat, 05 Jun 2010 00:10:23 GMT
The sections on ring management and token selection on
http://wiki.apache.org/cassandra/Operations will help.

On Fri, Jun 4, 2010 at 2:27 PM, Mike Subelsky <mike@subelsky.com> wrote:
> Hello everyone,
>
> One of my nodes has a much higher load (10x) than the other two nodes.
>  I don't think it's because a few keys have a lot more columns than
> others -- the keys are well distributed and I'm using the random
> partitioner.
>
> Could someone point me in the direction of what should I be checking
> for in a situation like this?  I don't totally understand what the
> range value represents below but I feel like that be must a clue.  I
> know I can run loadbalance here but I want to address the underlying
> problem that caused the imbalance in the first place.
>
> Address       Status     Load          Range
>           Ring
>
> 152603206199102353627433717890579536149
> 10.198.7.47   Up         95.8 MB
> 2178153229901630557148545713417876599      |<--|
> 10.210.239.191Up         1.09 GB
> 129781355096377133235068186455049349192    |   |
> 10.193.210.192Up         125.44 MB
> 152603206199102353627433717890579536149    |-->|
>
> thanks!
>
> -Mike
>
> --
> Mike Subelsky
> oib.com // ignitebaltimore.com // subelsky.com
> @subelsky
>



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com

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