thanks. both of you. Nicolas
Le 25 janv. 2013 à 19:05, Tyler Hobbs <ty...@datastax.com> a écrit : > > On Fri, Jan 25, 2013 at 8:07 AM, Nicolas Lalevée <nicolas.lale...@hibnet.org> > wrote: > Just a quick question about the attributes exposed via JMX. I have some doc > [1] but it doesn't help about CF beans. > > The "BloomFilterFalseRatio", is that the ratio of found vs missed, or the > ratio of false positive vs the number of tests, or something else ? > > False positives. > > You should be aware of this bug, though: > https://issues.apache.org/jira/browse/CASSANDRA-4043 > > > The "ReadCount" and "WriteCount", how do they count regarding the replication > factor ? As far as I understand, the read and write on the StorageProxy is > the actual number of requests coming from clients. So judging that the sum on > all cf of the read and write is near equal to the replication factor multiply > by the number of read and write on the StorageProxy, I am guessing that the > read and write per cf are the replicas one. Am I right ? > > > StorageProxy read/write counts should equal the number of client requests. > ColumnFamily read/write counts correspond to actual, local data reads, so the > sum of this number across all nodes will be approximately RF * the > StorageProxy counts. > > > -- > Tyler Hobbs > DataStax
