On Wed, Nov 14, 2018 at 5:43 AM Joshua Yanovski <joshua.yanov...@gmail.com> wrote:
> This is only a personal anecdote, but from my own experience with > serializability, this sort of blind update isn't often contended in realistic > workloads. > So, if this only affects transactions with blind updates, I doubt it will > cause much pain in real workloads (even though it might look bad in > benchmarks which include a mix of blind writes and rmw operations). > Particularly if it only happens if you explicitly opt into zheap storage. I agree with all of that, but will be very interested in what failures, if any, kick out from the "isolation" test set when all tables are created using zheap. I added all the common failure patterns I had seen to that set, and other have filled in some corner cases I missed since then, so if everything there passes I would not worry about it at all. If we do see some failures, we can take another look to see whether any action is needed. -- Kevin Grittner VMware vCenter Server https://www.vmware.com/
