+1 On Tue, Dec 8, 2020 at 8:31 AM Вячеслав Коптилин <slava.kopti...@gmail.com> wrote:
> Hello Igniters, > > I want to start voting on removing the public API (and eventually all > unused parts) related to the MVCC feature. > > This topic has already been discussed many times (at least, [1], [2]) and > the community has agreed the feature implementation must be reapproached, > because using coordinator node for transactions ordering and 2pc protocol > is slow by design and will not scale well. [3] > > Moreover, the current implementation has critical issues [4], not supported > by the community, and not well tested at all. > > Removing the public API first will allow us to clean up the code later step > by step without rushing and keep intact useful improvements that are > already in use or can be reused for other parts in the future. > For instance, partition counters implementation is already adapted to fix > tx caches protocol issues [5]. > > The future of MVCC is unclear for now, but, definitely, this feature is > useful for a lot of user scenarios and can be scheduled for later Ignite > versions. > Also, the MVCC feature is in an experimental state, so it can be modified > in any way, I think. > > +1 - to accept removing MVVC feature from public API > 0 - don't care either way > -1 - do not accept removing API (explain why) > > The vote will hold for 7 days and will end on Wednesday, December 16th at > 19:00 UTC: > > https://www.timeanddate.com/countdown/generic?iso=20201216T19&p0=1440&font=cursive > > [1] > > http://apache-ignite-developers.2346864.n4.nabble.com/Mark-MVCC-with-IgniteExperimental-td45669.html > [2] > > http://apache-ignite-developers.2346864.n4.nabble.com/Disable-MVCC-test-suites-td50416.html > [3] > > http://apache-ignite-developers.2346864.n4.nabble.com/Mark-MVCC-with-IgniteExperimental-tp45669p45727.html > [4] > > http://apache-ignite-developers.2346864.n4.nabble.com/Mark-MVCC-with-IgniteExperimental-tp45669p45716.html > [5] > > http://apache-ignite-developers.2346864.n4.nabble.com/Mark-MVCC-with-IgniteExperimental-tp45669p45714.html > > Thanks, > Slava. >
