Restarting the service will drop all the memmapped caches, cassandra caches are saved / persistent and you can also use memcachd if you want.
Are you experiencing stop the world pauses? There are some things that can be done to reduce the chance of them happening. Cheers ----------------- Aaron Morton Freelance Cassandra Developer @aaronmorton http://www.thelastpickle.com On 23 Jul 2011, at 05:34, Milind Parikh wrote: > In order to be predicable @ big data scale, the intensity and periodicity of > STW Garbage Collection has to be brought down. Assume that SLABS (Cass 2252) > will be available in the main line at some time and assume that this will > have the impact that other projects (hbase etc) are reporting. I womder > whether avoiding GC by restarting the servers before GC will be a feasible > approach (of course while knowing the workload) > > Regards > Milind >
