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) and return success message to client? or could anyone can give me a real case? Thanks. Shen On Thu, Jul 8, 2010 at 12:48 PM, Jonathan Ellis <jbel...@gmail.com> wrote: > No, it means that HH writes don't count towards meeting the requested > ConsistencyLevel. > > On Wed, Jul 7, 2010 at 9:36 PM, ChingShen <chingshenc...@gmail.com> wrote: > > So, does it mean that only the CL=ZERO and CL=ANY support hinted handoff, > > right? > > > > Thanks. > > > > Shen > > > > On Wed, Jul 7, 2010 at 11:28 PM, Jonathan Ellis <jbel...@gmail.com> > wrote: > >> > >> does http://wiki.apache.org/cassandra/HintedHandoff help? > >> > >> On Wed, Jul 7, 2010 at 10:16 AM, ChingShen <chingshenc...@gmail.com> > >> wrote: > >> > Thanks Jonathan Ellis, > >> > > >> > If so, how does the hinted handoff work? I thought the coordinator > >> > node > >> > will write the data to another node(e.g. G node), I'm confused. > >> > > >> > Shen > >> > > >> >> > >> >> > Second, if > >> >> > B node is down during the write operation, does it return > >> >> > failure(CL=ALL) to > >> >> > user? > >> >> > >> >> yes > >> >> > >> >> -- > >> >> Jonathan Ellis > >> >> Project Chair, Apache Cassandra > >> >> co-founder of Riptano, the source for professional Cassandra support > >> >> http://riptano.com > >> > > >> > > >> > > >> > > >> > >> > >> > >> -- > >> Jonathan Ellis > >> Project Chair, Apache Cassandra > >> co-founder of Riptano, the source for professional Cassandra support > >> http://riptano.com > > > > > > > > > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of Riptano, the source for professional Cassandra support > http://riptano.com >
