Re: row level atomicity and isolation

2018-05-16 Thread Rajesh Kishore
ok got it. So, only using LWT txn the updates across nodes for a particular row can be isolated, so basically paxos would ensure serializable isolation Thanks, Rajesh On Wed, May 16, 2018 at 4:56 PM, kurt greaves wrote: > Atomicity and isolation are only guaranteed within a replica. If you hav

Re: row level atomicity and isolation

2018-05-16 Thread kurt greaves
Atomicity and isolation are only guaranteed within a replica. If you have multiple concurrent requests across replicas last timestamp will win. You can get better isolation using LWT which uses paxos under the hood. On 16 May 2018 at 08:55, Rajesh Kishore wrote: > Hi, > > I am just curious to kn

row level atomicity and isolation

2018-05-16 Thread Rajesh Kishore
Hi, I am just curious to know when Cassandra doc says the atomicity and isolation is guaranteed for a row. Does it mean, two requests updating a row- "R1" at different replica will be candidate for atomicity and isolation? For instance , I have a setup where RF is 2 I have a client application wh