LOCAL_SERIAL is dc level, SERIAL checks for complete cluster level. On Fri, Sep 8, 2017 at 2:33 PM, Charulata Sharma (charshar) < chars...@cisco.com> wrote:
> Yes …it is with LOCAL_SERIAL. Should I be using SERIAL ? > > > > Thanks, > > Charu > > > > *From: *DuyHai Doan <doanduy...@gmail.com> > *Reply-To: *"user@cassandra.apache.org" <user@cassandra.apache.org> > *Date: *Friday, September 8, 2017 at 12:30 PM > *To: *"user@cassandra.apache.org" <user@cassandra.apache.org> > *Subject: *Re: Lightweight transaction in Multi DC > > > > Are you using CAS with SERIAL consistency level for your multi-DC setup ? > > > > On Fri, Sep 8, 2017 at 9:27 PM, Charulata Sharma (charshar) < > chars...@cisco.com> wrote: > > Hi, > > We are facing a serious issue with CAS in a multi DC setup and I > wanted to get some input on it from the forum. > > > > We have a Column family which stores counts for the number of events our > application receives. When the counts reach a certain threshold, > > there is another process which kicks in. The issue that is happening is, > sometimes when concurrent events come in 2 Data Centers, both the events > read the same count > > and increment it to the same value which causes the next process to not > kick in. > > > > When concurrent events come in the same DC, this does not happen, because > in this case, the CAS explicitly fails for one of them. > > However, in case of Multiple DCs this is not happening. Has anyone faced a > similar issue and is there any resolution to this?? I was unable to find > any open Jira on this. > > > > Thanks, > > Charu > > > > > > >
