Re: Issue with parallel LWT writes (and reads with serial consistency) overwriting data

2020-06-06 Thread Jeff Jirsa
The condition “if exists” isn’t sufficient to guarantee only one app can write the row, the problem here is it’s mixing keys/values between app instances ? What’s the actual schema here? > On Jun 6, 2020, at 7:16 AM, Michael Shuler wrote: > > There are no table/row locks in Cassandra. > >

Re: Issue with parallel LWT writes (and reads with serial consistency) overwriting data

2020-06-06 Thread Michael Shuler
There are no table/row locks in Cassandra. I believe swites from 2 different clients at (essentially precisely) the same time on the same table & row have no knowledge of one another. Each unique LWT did what was asked of it, read the data and wrote as requested. Last write won. This is the de