Hi,


yes, you are write. Actually write with QUORUM will cause to coordinator to 
wait for reply from other nodes, but I guess it's negligible.



Best regards, Vladimir Yudovin, 

Winguzone - Cloud Cassandra Hosting






---- On Sun, 18 Jun 2017 10:07:06 -0400 Jan Algermissen 
<algermissen1...@icloud.com> wrote ----




Hi, 

 

my understanding is that 

 

- for writes using any of the quorum CLs will not put more overall load 

on the cluster because writes will be sent to all nodes responsible for 

a partition anyhow. So quorum only increases response time of the 

coordinator, not cluster load. 

 

Correct? 

 

- for reads all quorum CLs will yield more requests sent by the 

coordinator to other nodes and hence *QUORUM reads definitely increase 

cluster load. (And of course response time of the coordinator, too). 

 

Correct? 

 

Jan 

 

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