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https://issues.apache.org/jira/browse/CASSANDRA-4858?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vijay updated CASSANDRA-4858:
-----------------------------
Attachment: 0001-CASSANDRA-4858.patch
Simple and a hackie patch,
We check if CL.One and RR is not true (FBU.threadLocalRandom().nextDouble()),
then we will use this optimization.
> Coverage analysis for low-CL queries
> ------------------------------------
>
> Key: CASSANDRA-4858
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4858
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Vijay
> Fix For: 1.2.1
>
> Attachments: 0001-CASSANDRA-4858.patch
>
>
> There are many cases where getRangeSlice creates more
> RangeSliceCommand than it should, because it always creates one for each range
> returned by getRestrictedRange. Especially for CL.ONE this does not take
> the replication factor into account and is potentially pretty wasteful.
> A range slice at CL.ONE on a 3 node cluster with RF=3 should only
> ever create one RangeSliceCommand.
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