If I may just loop this back to the question at hand: I'm curious if there are any gotchas with using sstableloader to restore snapshots taken from 256-token nodes into a cluster with 32-token (or your preferred number of tokens) nodes (otherwise same # of nodes and same RF).
On Fri, Jan 24, 2020 at 11:15 AM Sergio <lapostadiser...@gmail.com> wrote: > https://docs.datastax.com/en/dsbulk/doc/dsbulk/reference/dsbulkLoad.html > > Just skimming through the docs > > I see examples by loading from CSV / JSON > > Maybe there is some other command or doc page that I am missing > > > > > On Fri, Jan 24, 2020, 9:10 AM Nitan Kainth <nitankai...@gmail.com> wrote: > >> Dsbulk works same as sstableloder. >> >> >> Regards, >> >> Nitan >> >> Cell: 510 449 9629 >> >> On Jan 24, 2020, at 10:40 AM, Sergio <lapostadiser...@gmail.com> wrote: >> >> >> I was wondering if that improvement for token allocation would work even >> with just one rack. It should but I am not sure. >> >> Does Dsbulk support migration cluster to cluster without CSV or JSON >> export? >> >> Thanks and Regards >> >> On Fri, Jan 24, 2020, 8:34 AM Nitan Kainth <nitankai...@gmail.com> wrote: >> >>> Instead of sstableloader consider dsbulk by datastax. >>> >>> On Fri, Jan 24, 2020 at 10:20 AM Reid Pinchback < >>> rpinchb...@tripadvisor.com> wrote: >>> >>>> Jon Haddad has previously made the case for num_tokens=4. His >>>> Accelerate 2019 talk is available at: >>>> >>>> >>>> >>>> https://www.youtube.com/watch?v=swL7bCnolkU >>>> >>>> >>>> >>>> You might want to check that out. Also I think the amount of effort >>>> you put into evening out the token distribution increases as vnode count >>>> shrinks. The caveats are explored at: >>>> >>>> >>>> >>>> >>>> https://thelastpickle.com/blog/2019/02/21/set-up-a-cluster-with-even-token-distribution.html >>>> >>>> >>>> >>>> >>>> >>>> *From: *Voytek Jarnot <voytek.jar...@gmail.com> >>>> *Reply-To: *"user@cassandra.apache.org" <user@cassandra.apache.org> >>>> *Date: *Friday, January 24, 2020 at 10:39 AM >>>> *To: *"user@cassandra.apache.org" <user@cassandra.apache.org> >>>> *Subject: *sstableloader & num_tokens change >>>> >>>> >>>> >>>> *Message from External Sender* >>>> >>>> Running 3.11.x, 4 nodes RF=3, default 256 tokens; moving to a different >>>> 4 node RF=3 cluster. >>>> >>>> >>>> >>>> I've read that 256 is not an optimal default num_tokens value, and that >>>> 32 is likely a better option. >>>> >>>> >>>> >>>> We have the "opportunity" to switch, as we're migrating environments >>>> and will likely be using sstableloader to do so. I'm curious if there are >>>> any gotchas with using sstableloader to restore snapshots taken from >>>> 256-token nodes into a cluster with 32-token nodes (otherwise same # of >>>> nodes and same RF). >>>> >>>> >>>> >>>> Thanks in advance. >>>> >>>
