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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4858) Coverage analysis for low-CL queries
Date Wed, 12 Dec 2012 20:00:20 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13530260#comment-13530260
] 

Jonathan Ellis commented on CASSANDRA-4858:
-------------------------------------------

vnodes make this a lot worse.
                
> 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
>             Fix For: 2.0
>
>
> 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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