@Override
  public long getId() {
    return id;
  }
An extension of {@link PartitionId} to be used within the {@link StaticClusterManager}.

A Partition is the unit of data management in Ambry. Each Partition is uniquely identifiable by an ID. Partitions
consist of one or more {@link Replica}s. Replicas ensure that a Partition is available and reliable.
ambry-clustermap/src/main/java/com/github/ambry/clustermap/Partition.java