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  • transfers partitions to other peers;
  • repopulates lost partitions; and
  • updates version and location of partitions.

Partition Rebalancing

Each time that a cluster membership change is detected, e.g. when a peer joins a Service Space, a partition rebalancing singleton service is responsible for computing a new distribution plan for the partitions so that partitions are evenly distributed.

For instance, the rebalancing of 12 partitions works as follows: