Re: internal ntp

2011-06-17 Thread Ryan King
There's more burden on the user, but with a benefit– client supplied timestamps mean that client retries are idempotent as long as they use the same timestamp.* -ryan * doesn't apply to counters On Fri, Jun 17, 2011 at 8:01 AM, Tim Wisniewski wrote: > it's slightly less burden on the user > > O

Re: internal ntp

2011-06-17 Thread Nick Telford
The timestamp of a column is an arbitrary version number, the value of which is determined by the client that created the column. It's merely convention (and convenience) that clients use the current timestamp. Since the timestamp is a client-concern, and in non-trivial topologies Cassandra may not

Re: internal ntp

2011-06-17 Thread Tim Wisniewski
It makes the overall system more bullet proof On Fri, Jun 17, 2011 at 11:01 AM, Tim Wisniewski wrote: > it's slightly less burden on the user > > > On Fri, Jun 17, 2011 at 11:00 AM, Gary Dusbabek wrote: > >> That problem is already solved externally. I don't see the value of >> reimplementing i

Re: internal ntp

2011-06-17 Thread Tim Wisniewski
it's slightly less burden on the user On Fri, Jun 17, 2011 at 11:00 AM, Gary Dusbabek wrote: > That problem is already solved externally. I don't see the value of > reimplementing it inside of cassandra. > > Gary. > > On Fri, Jun 17, 2011 at 09:58, Tim Wisniewski wrote: > > Hi, > > > > My unde

Re: internal ntp

2011-06-17 Thread Gary Dusbabek
That problem is already solved externally. I don't see the value of reimplementing it inside of cassandra. Gary. On Fri, Jun 17, 2011 at 09:58, Tim Wisniewski wrote: > Hi, > > My understanding is data corruption can occur if the node clocks are too far > out of sync.  What if Cassandra nodes ma

internal ntp

2011-06-17 Thread Tim Wisniewski
Hi, My understanding is data corruption can occur if the node clocks are too far out of sync. What if Cassandra nodes maintained an internal time sync via ntp or something? -Tim