Thanks for your help so far! I have some problems trying to understand the jira mentioned by Rob :(
I'm currently trying to set up the first node in the new DC with auto_bootstrap = true. The node then becomes visible with status "joining", which (hopefully) prevents other DCs from sending queries to it. Do you think this will work? On Thu, Sep 3, 2015 at 9:46 PM, Robert Coli <rc...@eventbrite.com> wrote: > On Thu, Sep 3, 2015 at 12:25 PM, Bryan Cheng <br...@blockcypher.com> > wrote: > >> I'd recommend you enable tracing and do a few queries in a controlled >> environment to verify that queries are being routed to your new nodes. >> Provided you have followed the procedure outlined above (specifically, have >> set auto_bootstrap to false in your new cluster), rebuild has not been run, >> the application is not connecting to the new cluster, and all your queries >> are run at LOCAL_* quorum levels, I do not believe those queries should be >> routed to the new dc. >> > > Other than CASSANDRA-9753, this is true. > > https://issues.apache.org/jira/browse/CASSANDRA-9753 (Unresolved; ): > "LOCAL_QUORUM reads can block cross-DC if there is a digest mismatch" > > =Rob > >
