Cassandra doesn't guarantee writes make it to all replicas unless you use a sufficiently high consistency level or run nodetool repair
What consistency level did you use for writes? Have you run repair? -- Jeff Jirsa > On Aug 2, 2017, at 6:27 AM, Peng Xiao <2535...@qq.com> wrote: > > Hi there, > > We have a three DCs Cluster (two DCs with RF=3,one remote DC with RF=1),we > currently find that in DC1/DC2 select count(*) from t=1250,while in DC3 > select count(*) from t=750. > looks some data is missing in DC3(remote DC).there are no node down or > anything exceptional. > we only upgrade this DC from 2.1.13 to 2.1.18,but this seems won't cause data > loss. > > Could anyone please advise? > > Thanks, > Peng --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org
