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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2013/12/03 15:47:39 UTC
[jira] [Resolved] (CASSANDRA-2338) C* consistency level needs to be
pluggable
[ https://issues.apache.org/jira/browse/CASSANDRA-2338?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis resolved CASSANDRA-2338.
---------------------------------------
Resolution: Won't Fix
I don't think this is actually feasible.
> C* consistency level needs to be pluggable
> ------------------------------------------
>
> Key: CASSANDRA-2338
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2338
> Project: Cassandra
> Issue Type: New Feature
> Reporter: Matthew F. Dennis
> Priority: Minor
>
> for cases where people want to run C* across multiple DCs for disaster recovery et cetera where normal operations only happen in the first DC (e.g. no writes/reads happen in the remove DC under normal operation) neither LOCAL_QUORUM or EACH_QUORUM really suffices.
> Consider the case with RF of DC1:3 DC2:2
> LOCAL_QUORUM doesn't provide any guarantee that data is in the remote DC.
> EACH_QUORUM requires that both nodes in the remote DC are up.
> It would be useful in some situations to be able to specify a strategy where LOCAL_QUORUM is used for the local DC and at least one in a remote DC (and/or at least in *each* remote DC).
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