陈明雨 <morning...@163.com> 于2020年10月29日周四 下午12:24写道：
> > We can fiinish it when doing compaction, schema change. > Currenlty we do have a approach to automatically convert v1 to v2, by > setting config in be.conf. > But this approach is totally uncontrollable, that we can't even know when > it can finish. > > As far as I know, if we set default rowset type to beta in be.conf, the new generated rowset by compaction or schema change will be segment V2 format. And it works fine in my environment. And it is both time consuming and space consumimg. Actually, I'm not catch you in this point. I think it is the same with in V1 in time and space consuming. > > I think it may not be a big problem to keep the v1 format. > Looks good to me except a lot of redundant code > We only need to ensure that no new features are added to v1, and there are > commands to help users actively convert data, and that's it. > > Actually there is method to do the convert, if user do a schema change, the format will be converted to V2. Thanks, Zhao Chun > > > -- > > 此致！Best Regards > 陈明雨 Mingyu Chen > > Email: > chenmin...@apache.org > > > > > > 在 2020-10-29 11:20:43，"ling miao" <lingm...@apache.org> 写道： > >I don’t think it’s a problem as long as it is divided into several parts. > >But now there is a problem that the v2 version of the table is actually > >very few, it is difficult for us to truly verify the stability of v2 in a > >certain version. > > > >Or are there any points that can guide users to trigger the conversion > from > >v1 to v2 by themselves? > >Ling Miao > > > >Zhao Chun <zh...@apache.org> 于2020年10月29日周四 上午9:58写道： > > > >> 陈明雨 <morning...@163.com> 于2020年10月29日周四 上午9:56写道： > >> > >> > I agree to disable the use of V1 storage format for newly created > tables > >> > in version 0.14. > >> > > >> > > >> > But "automatically convert to V2" is a dangerous and time-consuming > >> > operation, we may need more discuss. > >> > > >> > > >> We can fiinish it when doing compaction, schema change. > >> > >> > >> Thanks, > >> Zhao Chun > >> > >> > >> > > >> > -- > >> > > >> > 此致！Best Regards > >> > 陈明雨 Mingyu Chen > >> > > >> > Email: > >> > chenmin...@apache.org > >> > > >> > > >> > > >> > > >> > > >> > At 2020-10-29 09:48:25, "apache" <yang...@apache.org> wrote: > >> > >Hello everyone: > >> > >At present, our V2 storage format has been developed for a long time, > >> and > >> > V2 has many advantages that V1 does not have. The coexistence of V1 > and > >> V2 > >> > brings a lot of code and cluster maintenance costs. > >> > >Therefore, I think the next version, that is, version 0.14 will > disable > >> > the use of V1 storage format for newly created tables. In version > 0.16, > >> the > >> > storage format of V1 will be automatically converted to V2. Finally, > the > >> > support of V1 format will be completely removed in a later version. > >> > > >> >
