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From Chris Burroughs <>
Subject Re: Multi-dc restart impact
Date Wed, 18 Sep 2013 12:50:30 GMT
On 09/17/2013 04:44 PM, Robert Coli wrote:
> On Thu, Sep 5, 2013 at 6:14 AM, Chris Burroughs
> <>wrote:
>> We have a 2 DC cluster running cassandra 1.2.9.  They are in actual
>> physically separate DCs on opposite coasts of the US, not just logical
>> ones.  The primary use of this cluster is CL.ONE reads out of a single
>> column family.  My expectation was that in such a scenario restarts would
>> have minimal impact in the DC where the restart occurred, and no impact in
>> the remote DC.
>> We are seeing instead that restarts in one DC have a dramatic impact on
>> performance in the other (let's call them DCs "A" and "B").
> Did you end up filing a JIRA on this, or some other outcome?
> =Rob

No.  I am currently in the process of taking a 2nd cluster from being 
single to dual DC.  Once that is done I was going to repeat the test 
with each cluster and gather as much information as reasonable.

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