When a record is inserted, the bucket to that it is mapped has space to store the record. If the bucket does not have sufficient space, a bucket overflow is said to occur.
Bucket overflow can occur for various reasons:
Insufficient buckets: no fo bucket is less than the number no of value
Skew: Some buckets are assigned more records than are others, so a bucket might overflow even while other buckets still have space. This situation is known as bucket skew.
