Re: Clock skew

2011-06-28 Thread AJ
replicas). During reads, the latest write wins. What if there is a clock skew ? It could lead to a stale write over-riding the actual latest write, just because the clock of that node is ahead of the other node. Right ?

Re: Clock skew

2011-06-28 Thread A J
> that node (correct me if that is not the case and the system-time of >> the co-ordinator is what gets applied to all the replicas). >> During reads, the latest write wins. >> >> What if there is a clock skew ? It could lead to a stale write >> over-riding the ac

Re: Clock skew

2011-06-28 Thread Dominic Williams
> During reads, the latest write wins. > > What if there is a clock skew ? It could lead to a stale write > over-riding the actual latest write, just because the clock of that > node is ahead of the other node. Right ? >

Re: Clock skew

2011-06-28 Thread Eric Evans
On Tue, 2011-06-28 at 11:54 +1200, aaron morton wrote: > Without exception the timestamp is set by the client, not the server. > The one exception to the without exception rule is CounterColumnType > operations. And CQL... -- Eric Evans eev...@rackspace.com

Re: Clock skew

2011-06-27 Thread Yang
e if that is not the case and the system-time of > > the co-ordinator is what gets applied to all the replicas). > > During reads, the latest write wins. > > > > What if there is a clock skew ? It could lead to a stale write > > over-riding the actual latest write, just because the clock of that > > node is ahead of the other node. Right ? > >

Re: Clock skew

2011-06-27 Thread aaron morton
ordinator is what gets applied to all the replicas). > During reads, the latest write wins. > > What if there is a clock skew ? It could lead to a stale write > over-riding the actual latest write, just because the clock of that > node is ahead of the other node. Right ?

Clock skew

2011-06-27 Thread A J
During writes, the timestamp field in the column is the system-time of that node (correct me if that is not the case and the system-time of the co-ordinator is what gets applied to all the replicas). During reads, the latest write wins. What if there is a clock skew ? It could lead to a stale