On Thu, Jul 8, 2010 at 12:45 AM, ChingShen <chingshenc...@gmail.com> wrote: > hmm... I'm really confused. > The http://wiki.apache.org/cassandra/API document mentioned that if write > ConsistencyLevel=ANY that "Ensure the write has been written to at least 1 > node, including hinted recipients.", I couldn't imagine this case. :( > > If I have A,B,C and D nodes(RF=1), and write ConsistencyLevel=ANY, so A > coordinator node sends a write request to another node(e.g. B node), but B > node is down during write operation, what happend? return failure message to > client immediately? or write a hint to another node(e.g. C node)
It will write a hint and report success. But if you were writing at CL.ONE it would fail the write because a hinted write isn't readable until it can be forwarded to the "right" node (here, B). -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
