Thanks Alex, I came across some interesting and efficient ways of upgrading from 1.x to 3.x as described in the blog here <https://medium.com/@roeezilkha/database-migration-at-scale-ae85c14c3621> and others. Was curious if someone has open-sourced their custom utility. :D
Regards Anurag On Mon, Jun 17, 2019 at 1:27 PM Oleksandr Shulgin < oleksandr.shul...@zalando.de> wrote: > On Mon, Jun 17, 2019 at 9:30 AM Anurag Sharma <anurag.rp.sha...@gmail.com> > wrote: > >> >> We are upgrading Cassandra from 1.25 to 3.X. Just curious if there is any >> recommended open source utility for the same. >> > > Hi, > > The "recommended open source utility" is the Apache Cassandra itself. ;-) > > Given the huge difference between the major versions, though, you will > need a decent amount of planning and preparation to successfully complete > such a migration. Most likely you will want to do it in small steps, first > upgrading to the latest minor version in the 1.x series, then making a jump > to 2.x, then to 3.0, and only then to 3.x if you really mean to. On each > upgrade step, be sure to examine the release notes carefully to understand > if there is any impact for your cluster and/or client applications. Do > have a test system with preferably identical setup and configuration and > execute the upgrade steps there first to verify your expectations. > > Good luck! > -- > Alex >
