code: private long getPartitionSize() {
  		long numSegments = 0;
  		for(InMemoryPartition<T> p : this.partitions) {
  			numSegments += p.getBlockCount();
  		}
  		return numSegments*this.segmentSize;
  	}
docs: Size of all memory segments owned by the partitions of this hash table excluding the compaction partition
  
  @return size in bytes