Hello, I find this discussion very useful. I did not see information about this topic in cassandra apache web page. Shouldn't we have a instruction page to create a new fresh cluster following the right instructions to use correctly the option allocate_tokens_for_keyspace ?
Jean Carlo "The best way to predict the future is to invent it" Alan Kay On Thu, Feb 14, 2019 at 8:52 PM DuyHai Doan <doanduy...@gmail.com> wrote: > Ok thanks John > > On Thu, Feb 14, 2019 at 8:51 PM Jonathan Haddad <j...@jonhaddad.com> wrote: > >> Create the first node, setting the tokens manually. >> Create the keyspace. >> Add the rest of the nodes with the allocate tokens uncommented. >> >> On Thu, Feb 14, 2019 at 11:43 AM DuyHai Doan <doanduy...@gmail.com> >> wrote: >> >>> Hello users >>> >>> By looking at the mailing list archive, there was already some questions >>> about the flag "allocate_tokens_for_keyspace" from cassandra.yaml >>> >>> I'm starting a fresh new cluster (with 0 data). >>> >>> The keyspace used by the project is raw_data so I >>> set allocate_tokens_for_keyspace = raw_data in the cassandra.yaml >>> >>> However the cluster fails to start, the keyspace does not exist yet (of >>> course, it is not yet created). >>> >>> So to me it is like chicken and egg issue: >>> >>> 1. You create a fresh new cluster with the option >>> "allocate_tokens_for_keyspace" commented out, in this case you cannot >>> optimize the token allocations >>> 2. You create a fresh new cluster with option >>> "allocate_tokens_for_keyspace" pointing to a not-yet created keyspace, it >>> fails (logically) >>> >>> The third option is: >>> >>> a. create a new cluster with "allocate_tokens_for_keyspace" commented >>> out >>> b. create the keyspace "raw_data" >>> c. set allocate_tokens_for_keyspace = raw_data >>> >>> My question is, since after step a. the token allocation is *already* >>> done, what's the point setting the flag in step c. ???? >>> >>> Regards >>> >>> Duy Hai DOAN >>> >> -- >> Jon Haddad >> http://www.rustyrazorblade.com >> twitter: rustyrazorblade >> >
