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  1. Couchbase .NET client library
  2. NCBC-2456

Transient NodeNotAvailableException rebalance under kv load

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Cannot Reproduce
    • 3.0.0
    • 3.0.1
    • library
    • None
    • 1

    Description

      I've been running a quite heavy kv workload and rebalancing kv nodes in and out (using 3.0.0). Not always, but sometimes I see an exception like:

      Couchbase.NodeNotAvailableException: Cannot find a Couchbase Server node for 10.143.194.101:11210.
         at Couchbase.CouchbaseBucket.SendAsync(IOperation op, CancellationToken token, Nullable`1 timeout)
         at Couchbase.KeyValue.CouchbaseCollection.UpsertAsync[T](String id, T content, UpsertOptions options)
         at sample.Program.Main(String[] args) in /Users/michaelnitschinger/couchbase/code/dotnet/sample/Program.cs:line 19
      -----------------------Context Info---------------------------
      null
      

      So it seems that the SDK is not handling a state transition when nodes come and go properly (i.e. grabbing a new config and rescheduling the op transparently). Interestingly in the case above, the IP address was not one that I actually added or removed (10.143.194.101 was steady, in this case I added 10.143.194.102 in, but I've also seen it on rebalance out).

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            jmorris Jeff Morris
            daschl Michael Nitschinger
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            Dates

              Created:
              Updated:
              Resolved:

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