Opened https://issues.apache.org/jira/browse/BOOKKEEPER-916
On Wed, Apr 6, 2016 at 8:38 AM, Venkateswara Rao Jujjuri <jujj...@gmail.com> wrote: > Actually we have been thinking something in similar lines, and better to > converge on this. > I would like to generalize it beyond bookies, at the level of ledger > directories. > > One simple usecase is, say we have a distribution of SSDs and HDDs on each > bookies, > and we have ledger storage on SSDs and HDDs. > > - Have at least one copy on SSD and other two on HDD. > - Writer need to be aware of this classification > - Replication logic need to be aware of this logic. > > - While reading attempt to read from SSD first. > - Reader also need to be aware of this logic. > > This will push bookkeeper towards the long term storage, also can be a > stepping store > towards introducing storage tiers in the future. > > On Wed, Apr 6, 2016 at 12:51 AM, Sijie Guo <si...@apache.org> wrote: > >> This sounds interesting. But it might need to think a bit careful to make >> it generic useful and easier to extend for different requirements. >> >> +1 on 4.5.0 and it would be good that you could raise more details on the >> jira. >> >> On Wed, Apr 6, 2016 at 1:05 AM, Enrico Olivelli - Diennea < >> enrico.olive...@diennea.com> wrote: >> >> > Hi Bookkeepers, >> > I just filed this new feature issue >> > https://issues.apache.org/jira/browse/BOOKKEEPER-912. >> > >> > My problem is to restrict the set of bookie to be used for each >> particular >> > ledger, this is because in a multi-tenant environment I have many >> bookies >> > but I would like to use only a specific subset of bookies (machines) for >> > each tenant, according to SLAs. Actually EnsemblePlacementPolicy is >> system >> > wise and using only that facility I cannot achieve my goal. >> > >> > Does this feature sound interesting ? >> > Ideas? >> > >> > I would work on this for 4.5.0 (giving that it will be released in Q3 or >> > Q4) >> > >> > >> > >> > -- >> > Enrico Olivelli >> > Software Development Manager @Diennea >> > Tel.: (+39) 0546 066100 - Int. 925 >> > Viale G.Marconi 30/14 - 48018 Faenza (RA) >> > >> > MagNews - E-mail Marketing Solutions >> > http://www.magnews.it >> > Diennea - Digital Marketing Solutions >> > http://www.diennea.com >> > >> > >> > ________________________________ >> > >> > MagNews è sponsor di ABI Dimensione Cliente – 7 e 8 Aprile >> > http://www.magnews.it/2016/03/17/dimensione-cliente-2016/ >> > >> > Iscriviti alla nostra newsletter per rimanere aggiornato su digital ed >> > email marketing! http://www.magnews.it/newsletter/ >> > >> > The information in this email is confidential and may be legally >> > privileged. If you are not the intended recipient please notify the >> sender >> > immediately and destroy this email. Any unauthorized, direct or >> indirect, >> > disclosure, copying, storage, distribution or other use is strictly >> > forbidden. >> > >> > > > > -- > Jvrao > --- > First they ignore you, then they laugh at you, then they fight you, then > you win. - Mahatma Gandhi > > > -- Jvrao --- First they ignore you, then they laugh at you, then they fight you, then you win. - Mahatma Gandhi
