The major advantage of a hash table is its speed. Because the hash function is to take a range of key values and transform them into index values in such a way that the key values are distributed randomly across all the indices of a hash table.

hash key is an element in the hash table. it is the data that you will combine (mathematical) with hash function to produce the hash.

temp table

DHT - Distributed Hash Table. A DHT problem stems from an incorrect hash - file corruption error. Look through the help for your P2P sharing system and it should direct you how to either ignore the problem (not recommended as that is how virus's are introduced) or correct the problem IF you have a client side hash problem.

There is no upper limit.