Hi I'm using 4 node Riak cluster v1.3.1
I wanted to know a little bit more about using withoutFetch() option when used with levelDB. I'm trying to write to a single key as fast as I can with n=3. I deliberately create siblings by writing with stale vclock. I'm limiting number of writes to 1000 per key to keep size of Riak object under control and then I switch to another key. Siblings will probably never be resolved (or resolved in realtime during sporadic reads) Single write operation is about 250 bytes, rate 10-80 events per sec which gives 3-20kB per second per node. So roughly 100kB / s for the cluster. During the test I see activity on the on disk via iostat and it's between 20-30 MB/s on each node. Even taking into account multiple copies and overhead of Riak (vclocks etc) this seems to be pretty high rate. I don't see any read activity which suggest withoutFetch() works as expected. After 2 mins of tests leveldb on each node is 250MB is size, before test (11MB) Am I using it incorrectly? Is writing in this way to a single key a good idea or will I be bitten by something? How to explain high number of MB written to disks? Regards Daniel -- View this message in context: http://riak-users.197444.n3.nabble.com/Clarifying-withoutFetch-with-LevelDB-and-tp4033051.html Sent from the Riak Users mailing list archive at Nabble.com. _______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
