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From "Hari Sekhon (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-7877) Tunable consistency across cross datacenters LOCAL_QUORUM + 1
Date Thu, 04 Sep 2014 10:02:52 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-7877?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hari Sekhon updated CASSANDRA-7877:
-----------------------------------
    Description: 
Right now tunable consistency allows for things like local quorum and each quorum across multiple
datacenters.

I propose something in between where you achieve local quorum + 1 node at other DC. This would
make sure the data is written to the other datacenter for resilience purposes but be better
performing that having to do an each quorum write at both datacenters. Mind you re-reviewing
each_quorum I'm not sure how much more performant this would be...

  was:
Right now tunable consistency allows for things like local quorum and each quorum across multiple
datacenters.

I propose something in between where you achieve local quorum + 1 node at other DC. This would
make sure the data is written to the other datacenter for resilience purposes but be better
performing that having to do an each quorum write at both datacenters.


> Tunable consistency across cross datacenters LOCAL_QUORUM + 1
> -------------------------------------------------------------
>
>                 Key: CASSANDRA-7877
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7877
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Hari Sekhon
>            Priority: Minor
>
> Right now tunable consistency allows for things like local quorum and each quorum across
multiple datacenters.
> I propose something in between where you achieve local quorum + 1 node at other DC. This
would make sure the data is written to the other datacenter for resilience purposes but be
better performing that having to do an each quorum write at both datacenters. Mind you re-reviewing
each_quorum I'm not sure how much more performant this would be...



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