Re: Cassandra cross dc replication row isolationCassandra cross dc replication row isolation

2019-05-21 Thread Alexey Knyshev
Anyone? ср, 8 мая 2019 г. в 11:37, Alexey Knyshev : > Hi, thanks for your answers! > > > Are you asking if writes are atomic at the partition level? If so yes. > If you have N columns in a simple k/v schema, and you send a write with X/N > of those columns set, all X will be u

Re: Cassandra cross dc replication row isolationCassandra cross dc replication row isolation

2019-05-08 Thread Alexey Knyshev
m of nodes on the DC on >> which the Coordinator accepted the write. Similarly it would only check >> nodes in that DC. Quorum would check across DCs in the whole cluster. >> On May 7, 2019, 12:11 PM -0500, Alexey Knyshev , >> wrote: >> >> Hi there! >> >>

Re: Cassandra cross dc replication row isolationCassandra cross dc replication row isolation

2019-05-08 Thread Alexey Knyshev
m of nodes on the DC on >> which the Coordinator accepted the write. Similarly it would only check >> nodes in that DC. Quorum would check across DCs in the whole cluster. >> On May 7, 2019, 12:11 PM -0500, Alexey Knyshev , >> wrote: >> >> Hi there! >> >>

Cassandra cross dc replication row isolationCassandra cross dc replication row isolation

2019-05-07 Thread Alexey Knyshev
Hi there! Could someone please explain how Column Family would be replicated and "visible / readable" in the following scenario? Having multiple geo-distributed datacenters with significant latency (up to 100ms RTT). Let's name two of them A and B and consider the following 2 cases: 1. Cassand