Discussion on dynamic sharding

[mohitranka]

@mrjn

Once our RAFT functionality is up, we’d no longer use the hash mechanism to determine which predicate goes to which server. All of that would be dictated via the global map.

This clears it up for me that RAFT with replace hashing completely and decide which all nodes to save the data to based on quorum and replication factor. Thanks.

@mrjn

If a node goes down, we’ll have to move the data to other nodes in the cluster. That’s all the excess network traffic that’d be incurred that I can think of on top of my head. Is there something, in particular, you’re thinking about.

and adding more nodes. Basically I was keen to understand how the balancing of data/node loads will happen as the available hardware resources change. And I suppose the answer is Dgraph is going to delegate it to RAFT.