I think it's related to a reported bugs few days 
back https://github.com/orientechnologies/orientdb/issues/3311

On Tuesday, 6 January 2015 17:21:12 UTC+8, Leng Sheng Hong wrote:
>
> Is auto sharding working in 2.0 RC1?
>
> I have 2 servers nodes with orientdb distributed mode running. Both 
> database are synced. I have tried to enable autosharding following the 
> manual at 
> http://www.orientechnologies.com/docs/last/orientdb.wiki/Distributed-Sharding.html
>  
> and create my claases.
>
> alter database minimumclusters 4
>
>
> The DB clusterSelection was roundrobin. However when i insert records 
> it's always using the default cluster, no other clusters are used to store 
> the new records.
> So i tried to alter the cluster selection for the class: ALTER CLASS 
> MyProfile CLUSTERSELECTION roundrobin
>
> Tried to create new record, it's still using the default #18 cluster. 
> After changing to another clusterselection 
> ALTER CLASS MyProfile CLUSTERSELECTION balanced
>
> It's still the same, however now when i insert new record from server 2, 
> it will complai:
> com.orientechnologies.common.exception.OException: Cannot find best 
> cluster for class 'MyProfile'. ClusterStrategy=local 
> [ONetworkProtocolHttpDb]
>
> But it's still fine on server 1 but still only the default cluster is 
> used. (which is the 1st DB that is deploy). What else is needed to be 
> configured to New records to fully utilize the clusters automatically?
>
> Name SuperClass AliasAbstractClusters Default ClusterCluster Selection 
> RecordsActionsMyProfile[18,19,20,21]18
>
>

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