On 2011-01-11 15:41, Chris Burroughs wrote: > On 01/11/2011 02:56 PM, Peter Schuller wrote: >>> But now I need two knobs: "Max size of row cache" (best optimal steady >>> state hit rate) and "number of row cache items to read in on startup" >>> (so that the ROW-READ-STAGE does not need to drop packets and node can >>> be restarted in a reasonable amount of time). >> >> Good idea IMO. File a jira ticket? >> > > https://issues.apache.org/jira/browse/CASSANDRA-1966 created. >
Reading only a fraction of the rows is unlikely to be useful since ConcurrentLinkedHashMap does not provide any hooks for sorting the entries usefully. For anyone else who is having similar problems with cold startup and small rows what I will probably try a KeyCache sized << RowCache and save only that KeyCache to disk.
