What does secondary clustering mean in hash tables?

Secondary Clustering has the tendency for collision resolution technique, such as by using quadratic probing which creates long runs of filled slots away from the hash position of keys. Example:- If the primary hash index is x, then next probe sequence is followed by x+1, x+4, x+9, x+16, x+25 and so on, this results in Secondary Clustering
For More Information Please Refer:
https://www.quora.com/What-does-secondary-clustering-mean-in-hash-tables
You May Also Like to Read: