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From "Jonathan Ellis (JIRA)" <>
Subject [jira] [Resolved] (CASSANDRA-5237) Add consistency level EACH_ONCE
Date Wed, 20 Nov 2013 03:09:23 GMT


Jonathan Ellis resolved CASSANDRA-5237.

    Resolution: Won't Fix

> Add consistency level EACH_ONCE
> -------------------------------
>                 Key: CASSANDRA-5237
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Srdjan Mitrovic
>            Priority: Minor
> Use case:
> If we have 2 datacenters and 2 replicas per datacenter a good fault tolerant consistency
strategy would be to use level EACH_ONCE for writes as in that case it is fault tolerant even
if 2 nodes die (one in each dc). If we assume that a node from local dc will always reply
faster then remote dc we could use CL_TWO for reads and it would work fast for reads in normal
conditions and be fault tolerant if a node or 2 nodes die.

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