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From aaron morton <aa...@thelastpickle.com>
Subject Re: Multiple Data Center shows very uneven load
Date Tue, 11 Dec 2012 20:10:38 GMT
Hi Sergey, I think you have forgotten to include some information in your email. 

Cheers

-----------------
Aaron Morton
Freelance Cassandra Developer
New Zealand

@aaronmorton
http://www.thelastpickle.com

On 12/12/2012, at 3:00 AM, Sergey Olefir <solf.lists@gmail.com> wrote:

> Keith Wright wrote
>> I have base Cassandra 1.1.7 installed in two data centers with 3 nodes
>> each using a PropertyFileSnitch as outlined below. When I run a nodetool
>> ring, I see a very uneven load. Any idea what I could be going on? I have
>> not added/removed any nodes or changed the replication scheme or counts.
> 
> 
> I have a very similar issue myself and would love to know what (if anything)
> needs to be done (I'm using 1.1.6 at the moment). After stress-test (maximum
> load), I had the following on my nodes (every IP is changed to the
> corresponding fake number):
> 
> 
> This already shows uneven load despite the fact that nodes actually hold the
> same amount of data (according to effective-ownership and application design
> / token values).
> 
> However I then proceeded to drop the single keyspace that was on this
> cluster and I got this:
> 
> 
> 
> 
> Why 11.111.111.1 still has 700+ MB of data? I tried nodetool repair,
> nodetool cleanup, and node restart (for 11.111.111.1) -- none of that helped
> (it still had those 700+ MB of data).
> 
> Here's info from the filesystem on that node:
> 
> 
> 
> And here is syslog from Cassandra when I restarted 11.111.111.1 node:
> 
> 
> 
> I'd much appreciate if someone can provide some insight as to what is going
> on and what (if anything) needs to be done.
> 
> Best regards,
> Sergey
> 
> 
> 
> --
> View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Multiple-Data-Center-shows-very-uneven-load-tp7584197p7584206.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.


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