+1 -Dan
On Tue, Dec 5, 2017 at 4:28 PM, Jason Huynh <jhu...@pivotal.io> wrote: > This is a proposal to deprecate existing Hash Index and deprecate the > create hash index apis. > > > Currently the Hash Index name causes confusion. It is not a traditional > hash look up index, but more of memory savings index. The index does not > store index keys in memory and must hash the keys every time. The index > synchronizes on a backing array and when the backing array needs to be > expanded, it currently needs to rehash all elements in the array. This can > be very problematic for larger data sets. > > > There were improvements made to one of the functional indexes (compact > range index) prior to open sourcing. These improvements helped reduce the > memory consumption of that index and makes it very similar sized to a hash > index, but the keys still are stored in memory. Probably close enough to > be a replacement for the hash index in most cases. The read/write > performance on it is also faster than the hash index. > > > If anyone has any objections, please let us know and why. > > > Thanks, > > - Jason >
