What version are you on ? > but we are finding a secondary index is performing slow Not sure what you mean here.
> Are secondary indexes concurrent or single threaded? Rebuilding a secondary index (via node tool) is a single threaded operation, but *all* indexes specified on the command line are built at the same time. Rebuilding any one index requires reading all the rows in the CF. Cheers ----------------- Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 23/11/2012, at 8:20 AM, Simon Guindon <simon.guin...@jsitelecom.com> wrote: > We are importing data from one column family into a second column family via > “nodetool refresh” but we are finding a secondary index is performing slow > and the machine CPU is pretty much idle. We are trying to bulk load data as > fast as possible. > > Are secondary indexes concurrent or single threaded?
