private void populateReplicaList(int replicaCount, ReplicaState replicaState) {
    populateReplicaList(replicaCount, replicaState, datanodes);
  }
Populate replicas for a partition.
@param replicaCount The number of replicas to populate.
@param replicaState The {@link ReplicaState} associated with these replicas.
ambry-router/src/test/java/com/github/ambry/router/OperationTrackerTest.java