Does any one have idea for this? Thanks~ 2012/4/24 马超 <hossc...@gmail.com>
> Hi all, > > I have some troubles of cassandra in my production: > > I build up a RPC server which using hector client to manipulate the > cassandra. Wired things happen nowadays: the latency of RPC sometimes > becames very high (10seconds~70seconds) in several minutes and reduce > to normal level (30ms in average) after that time. I investigate the > debug log of cassandra. During high latency time, the cassandra output > lots of message like: > "IncomingTcpConnection.java(116) Version is now 3. " > Seems everything be blocked during that time. > > Our settings as following: > The version of cassandra is 1.0.1 and hector version is 0.7.0 for the > compatible of thrift version which we use (0.5.0) > The cluster contains 4 nodes and all of them are seeds. The > gcgraceseconds is 0 since we needn't delete the data > > p.s. It works well for a long time (3 months) but becames crazy these > days after we push the new RPC server which supports bigger data > saving (2mb in average). I'm not sure if these is the reason. > > Hope getting your replay~~ > > Thanks, > > Chao. >
