Re: Question about sharding of rows and atomicity

2011-10-05 Thread Konstantin Naryshkin
happens while the write is being done it is possible that only some of the columns will have the new values. - Original Message - From: "Don Smith" To: user@cassandra.apache.org Sent: Wednesday, October 5, 2011 2:09:36 PM Subject: Question about sharding of rows and atomicity Does

Re: Question about sharding of rows and atomicity

2011-10-05 Thread Jonathan Ellis
On Wed, Oct 5, 2011 at 1:09 PM, Don Smith wrote: > Does Cassandra shard the columns of a single row across multiple nodes so > that to read the columns of the row it may need access to multiple nodes? > I'd say "no." Correct. >   Will a read from a given node ever return partial results or > is

Question about sharding of rows and atomicity

2011-10-05 Thread Don Smith
Does Cassandra shard the columns of a single row across multiple nodes so that to read the columns of the row it may need access to multiple nodes? I'd say "no." Will a read from a given node ever return partial results or is the write to a node of a row atomic? Thanks, Don