I think the question is - does BookKeeper support rollbacks? My guess the answer is no. But we can selectively do rollbacks if we know what we are doing.
I think it would be good if we introduce rollback support feature. Bookies need support 'forward compatibility'. On Thu, Apr 16, 2020 at 3:34 AM Enrico Olivelli <[email protected]> wrote: > Hi Subash, > usually by default there is no problem in rolling back to the previous > version. > For instance if you are running 4.9 and you upgrade to 4.10 your bookies > you can downgrade to 4.9 just by using the old code. > This is because we introduce new features but they are disabled by default > at least for one release. > > But I suggest you to perform a test about the rollback before going to > production > > Enrico > > > Il giorno gio 16 apr 2020 alle ore 12:23 Subash K <[email protected]> > ha scritto: > >> Hi, >> >> >> >> We are planning to introduce Apache Pulsar in our product. In general we >> always support upgrade and rollback of our product. >> >> >> So I'm trying to understand is there any defined steps provided to >> support rollback of Apache Bookeeper to its earlier version after >> completing full cluster upgrade? I was not able to find those information >> in https://bookkeeper.apache.org/docs/latest/admin/upgrade/ >> <https://slack-redir.net/link?url=https%3A%2F%2Fbookkeeper.apache.org%2Fdocs%2Flatest%2Fadmin%2Fupgrade%2F&v=3> >> >> >> >> Regards, >> >> Subash Kunjupillai >> >> >> > -- Jvrao --- First they ignore you, then they laugh at you, then they fight you, then you win. - Mahatma Gandhi
