OK, I see, so the data files stay in place, i have to just stop cassandra on whole cluster, remove system schema and then start cluster and recreate all keyspaces with all column families? Data will be than loaded automatically from existing ssstables, right? So one more question: what about KS system_traces? should it be removed and recreted? What data it's holding? best regards Aleksander
2014-03-14 0:14 GMT+01:00 Robert Coli <rc...@eventbrite.com>: > On Thu, Mar 13, 2014 at 1:20 PM, olek.stas...@gmail.com > <olek.stas...@gmail.com> wrote: >> >> Huh, >> you mean json dump? > > > If you're using cassandra-cli, I mean the output of "show schema;" > > If you're using CQLsh, there is an analogous way to show all schema. > > 1) dump schema to a file via one of the above tools > 2) stop cassandra and nuke system keyspaces everywhere > 3) start cassandra, coalesce cluster > 4) load schema > > =Rob >
