Rob, Thanks. I was not aware of that. So we can avoid repair if there is no hardware failure...I found a blog:
http://www.datastax.com/dev/blog/modern-hinted-handoff -Wei ----- Original Message ----- From: "Robert Coli" <rc...@eventbrite.com> To: user@cassandra.apache.org, "Wei Zhu" <wz1...@yahoo.com> Sent: Wednesday, June 19, 2013 12:58:45 PM Subject: Re: Data not fully replicated with 2 nodes and replication factor 2 On Wed, Jun 19, 2013 at 11:43 AM, Wei Zhu <wz1...@yahoo.com> wrote: > I think hints are only stored when the other node is down, not on the > dropped mutations. (Correct me if I am wrong, actually it's not a bad idea > to store hints for dropped mutations and replay them later?) This used to be the way it worked pre-1.0... https://issues.apache.org/jira/browse/CASSANDRA-2034 In modern cassandra, anything but a successful ack from a coordinated write results in a hint on the coordinator. > To solve your issue, as I mentioned, either do nodetool repair, or increase > your consistency level. By the way, you probably write faster than your > cluster can handle if you see that many dropped mutations. If his hints are ultimately delivered, OP should not "need" repair to be consistent. =Rob
