Status    rebalStatus `msg:"status"`  // Current state of rebalance operation. One of Started|Stopped|Completed|Failed.
}

// rebalanceMeta contains information pertaining to an ongoing rebalance operation.
type rebalanceMeta struct {
	cancel          context.CancelFunc `msg:"-"` // to be invoked on rebalance-stop
	lastRefreshedAt time.Time          `msg:"-"`
	StoppedAt       time.Time          `msg:"stopTs"` // Time when rebalance-stop was issued.