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https://issues.apache.org/jira/browse/CASSANDRA-2331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eldon Stegall updated CASSANDRA-2331:
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Attachment: consistencylevelpatch.txt
> Allow a Job Configuration to control the consistency level with which reads
> and writes occur for mapreduce jobs.
> ----------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-2331
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2331
> Project: Cassandra
> Issue Type: Improvement
> Components: Hadoop
> Reporter: Eldon Stegall
> Priority: Minor
> Attachments: consistencylevelpatch.txt
>
>
> Allow a Job Configuration to control the consistency level with which reads
> and writes occur for mapreduce jobs. This would be useful if we were doing
> statistical rollups and wanted to fail if consistency isn't met (W + R <= N
> as described by http://wiki.apache.org/cassandra/ArchitectureOverview). An
> example of a situation where this might happen would be if a set of cassandra
> nodes became partitioned from the other nodes, but were still accepting some
> writes with ConsistencyLevel 1/2 (in the case that writes were local to the
> partition). Then statistical rollup jobs might succeed without those accepted
> writes being included, and this would not be desirable.
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