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From "R. Verlangen" <ro...@us2.nl>
Subject Re: unbalanced ring
Date Tue, 27 Mar 2012 07:00:16 GMT
Cassandra is built to store tons and tons of data. In my opinion roughly ~
6MB per node is not enough data to allow it to become a fully balanced
cluster.

2012/3/27 Tamar Fraenkel <tamar@tok-media.com>

> This morning I have
>  nodetool ring -h localhost
> Address         DC          Rack        Status State   Load
>  Owns    Token
>
>      113427455640312821154458202477256070485
> 10.34.158.33    us-east     1c          Up     Normal  5.78 MB
> 33.33%  0
> 10.38.175.131   us-east     1c          Up     Normal  7.23 MB
> 33.33%  56713727820156410577229101238628035242
> 10.116.83.10    us-east     1c          Up     Normal  5.02 MB
> 33.33%  113427455640312821154458202477256070485
>
> Version is 1.0.8.
>
>
> *Tamar Fraenkel *
> Senior Software Engineer, TOK Media
>
> [image: Inline image 1]
>
> tamar@tok-media.com
> Tel:   +972 2 6409736
> Mob:  +972 54 8356490
> Fax:   +972 2 5612956
>
>
>
>
>
> On Tue, Mar 27, 2012 at 4:05 AM, Maki Watanabe <watanabe.maki@gmail.com>wrote:
>
>> What version are you using?
>> Anyway try nodetool repair & compact.
>>
>> maki
>>
>>
>> 2012/3/26 Tamar Fraenkel <tamar@tok-media.com>
>>
>>> Hi!
>>> I created Amazon ring using datastax image and started filling the db.
>>> The cluster seems un-balanced.
>>>
>>> nodetool ring returns:
>>> Address         DC          Rack        Status State   Load
>>>  Owns    Token
>>>
>>>        113427455640312821154458202477256070485
>>> 10.34.158.33    us-east     1c          Up     Normal  514.29 KB
>>> 33.33%  0
>>> 10.38.175.131   us-east     1c          Up     Normal  1.5 MB
>>>  33.33%  56713727820156410577229101238628035242
>>> 10.116.83.10    us-east     1c          Up     Normal  1.5 MB
>>>  33.33%  113427455640312821154458202477256070485
>>>
>>> [default@tok] describe;
>>> Keyspace: tok:
>>>   Replication Strategy: org.apache.cassandra.locator.SimpleStrategy
>>>   Durable Writes: true
>>>     Options: [replication_factor:2]
>>>
>>> [default@tok] describe cluster;
>>> Cluster Information:
>>>    Snitch: org.apache.cassandra.locator.Ec2Snitch
>>>    Partitioner: org.apache.cassandra.dht.RandomPartitioner
>>>    Schema versions:
>>>         4687d620-7664-11e1-0000-1bcb936807ff: [10.38.175.131,
>>> 10.34.158.33, 10.116.83.10]
>>>
>>>
>>> Any idea what is the cause?
>>> I am running similar code on local ring and it is balanced.
>>>
>>> How can I fix this?
>>>
>>> Thanks,
>>>
>>> *Tamar Fraenkel *
>>> Senior Software Engineer, TOK Media
>>>
>>> [image: Inline image 1]
>>>
>>> tamar@tok-media.com
>>> Tel:   +972 2 6409736
>>> Mob:  +972 54 8356490
>>> Fax:   +972 2 5612956
>>>
>>>
>>>
>>>
>>
>


-- 
With kind regards,

Robin Verlangen
www.robinverlangen.nl

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