@Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || this.getClass() != o.getClass()) {
      return false;
    }
    ContainerStorageStats other = (ContainerStorageStats) o;
    return containerId == other.containerId && numberOfBlobs == other.numberOfBlobs
        && physicalStorageUsage == other.physicalStorageUsage && logicalStorageUsage == other.logicalStorageUsage;
  }
True if all the storage stats values are 0.
@return True if all the stats values are 0.
ambry-api/src/main/java/com/github/ambry/server/storagestats/ContainerStorageStats.java