C# client (CI) questions re: IfNotModified

Alex Rice alex at mindlube.com
Wed Oct 2 18:17:38 EDT 2013

Hmm so  so I cannot replicate anything causal between the
CommunicationError and the C lusterOffline: Unable to access
functioning Riak node. I guess the cluster really was going offline
from my benchmarking!

However, I do always a CommunicationError when Put-ing a key that has
changed, when using IfNotModified = true. Just wondering if that is to
be expected or maybe worth filing an enhancement request on github?
Because it's not really a CommunicationError :)


On Wed, Oct 2, 2013 at 2:52 PM, Alex Rice <alex at mindlube.com> wrote:
> Just trying to make sure I understand what is the proper usage of this
> option IfNotModified in CI.
> // (first do a Get of the object)
> // do a SetObject on the riakobject with my changes
> var putOpts = new RiakPutOptions () { IfNotModified = true };
> // do a Put with those Options
> When the put fails, because I have forced another client to have
> modified the key, I get a result back with:
> resultCode = CommunicationError
> message = Riak returned an error. Code '0'. Message: modified
> So the actual condition is kind of buried in the message string which
> is not ideal. Maybe there could be a first-class resultCode named
> Modified?
> Also I then seem to get subsequently
>  ClusterOffline: Unable to access functioning Riak node
> Is it possible that CI is interpreting the CommunicationError
> internally to think the node is down or something? Just curious- maybe
> the unable to access functioning Riak node is because I'm running
> basho_bench simultaneously? Could be a co-incidence, but it doesn't
> seem like it.
> Thanks,
> Alex

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