Performance when changing a cluster size with vNodes and with Tablets

[Guy]

Originally from the User Slack

@FRED_FAT: Hi, does anyone compared the rebalance performance between vNode and tablet? vNode only suggest to add new node one by one and tablet could support parallel add

@Felipe_Cardeneti_Mendes**:** you mean purely data rebalancing time? Yes, tablets wins by a very large margin as both data gets and nodes are distributed/bootstrapped in parallel