@Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }

    Partition partition = (Partition) o;
    return id.equals(partition.id);
  }
Generates a {@link String} representation that uniquely identifies this partition. The string
is in the format of {@code Partition[i]}, where {@code i} is a {@code long} id number uniquely
associated with this partition.
@return The {@link String} representation of this partition.
ambry-clustermap/src/main/java/com/github/ambry/clustermap/Partition.java