On Fri, Dec 20, 2013 at 11:43 PM, Alvaro Herrera <alvhe...@2ndquadrant.com>wrote:
> Heikki Linnakangas escribió: > > > I believe that eliminates all encodings in the Simple family, as > > well as PForDelta, and surprisingly also Rice encoding. For example, > > if you have three items in consecutive offsets, the differences > > between them are encoded as 11 in rice encoding. If you remove the > > middle item, the encoding for the next item becomes 010, which takes > > more space than the original. > > I don't understand this. If you have three consecutive entries, and the > differences between them are 11, you need to store two 11s. But if you > have two items, you only need to store 010 once. So the difference is > larger, but since you need to store only one of them then overall it's > still shorter than the original. No? I believe Heikki mean both differences are encoded as 11, each one is 1. ------ With best regards, Alexander Korotkov.
