@Override
  public void deleteAggregatedPartitionClassStatsForAccountContainer(String partitionClassName, short accountId,
      short containerId) throws Exception {

  }
Constructor to instantiate an {@link InmemoryAccountStatsStore}.
@param clusterName the clusterName
@param hostname the hostname
ambry-mysql/src/main/java/com/github/ambry/accountstats/InmemoryAccountStatsStore.java