Writing same key on two nodes using ONE consistency

2013-10-26 Thread Mohammad Hajjat
with same key having two different values on the two nodes)? Or would each node forward the write request to the node responsible to hold that key (determined by the hash function)? Thanks! -- *Mohammad Hajjat* *Ph.D. Student* *Electrical and Computer Engineering* *Purdue University*

Re: CPU Bound Writes

2013-07-21 Thread Mohammad Hajjat
then Insert-heavy workloads will actually be CPU-bound in Cassandra before being memory-bound? What is the source of the quote ? Cheers - Aaron Morton Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 21/07/2013, at 4:27 AM, Mohammad Hajjat haj

Re: Socket buffer size

2013-07-21 Thread Mohammad Hajjat
feel free to correct me if I am wrong. Regards, Shahab On Saturday, July 20, 2013, Mohammad Hajjat wrote: Hi, What's the difference between: rpc_send_buff_size_in_bytes and internode_send_buff_size_in_bytes? I need to set my TCP socket buffer size (for both transmit/receive) to a given

Re: CPU Bound Writes

2013-07-20 Thread Mohammad Hajjat
being memory-bound” ** ** Can someone explain why the internals of why writes are CPU bound ? ** ** ** ** -- *Mohammad Hajjat* *Ph.D. Student* *Electrical and Computer Engineering* *Purdue University*

Re: CPU Bound Writes

2013-07-20 Thread Mohammad Hajjat
...@gmail.com wrote: Everything is written to the commit log. In the case of a crash, cassandra recovers by replaying the log. On Sat, Jul 20, 2013 at 9:03 AM, Mohammad Hajjat haj...@purdue.eduwrote: Patricia, Thanks for the info. So are you saying that the *whole* data is being written on disk

Socket buffer size

2013-07-20 Thread Mohammad Hajjat
to be equal, one less than another, etc.? The documentation here is not really helping much! http://www.datastax.com/docs/1.2/configuration/node_configuration#rpc-send-buff-size-in-bytes Thanks! -- *Mohammad Hajjat* *Ph.D. Student* *Electrical and Computer Engineering* *Purdue University*

Re: Recommended data size for Reads/Writes in Cassandra

2013-07-18 Thread Mohammad Hajjat
-incubator-apache-org.3065146.n2.nabble.com/Recommended-data-size-for-Reads-Writes-in-Cassandra-tp7589141.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com. -- Tyler Hobbs DataStax http://datastax.com/ -- *Mohammad Hajjat* *Ph.D. Student* *Electrical