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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1600) Merge get_indexed_slices with get_range_slices
Date Fri, 15 Oct 2010 15:56:34 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12921416#action_12921416
] 

Jonathan Ellis commented on CASSANDRA-1600:
-------------------------------------------

You seem to be arguing that there exists a body of users who somehow know to avoid misusing
get_range_slices outside Hadoop now, but won't after this change.  I don't see that.  Is there
a change in degree? Yes. But in kind? No.

> Merge get_indexed_slices with get_range_slices
> ----------------------------------------------
>
>                 Key: CASSANDRA-1600
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1600
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: API
>            Reporter: Stu Hood
>             Fix For: 0.7.0
>
>         Attachments: 0001-Add-optional-IndexClause-to-KeyRange-and-serialize-w.patch,
0002-Drop-the-IndexClause.count-parameter.patch, 0003-Execute-RangeSliceCommands-using-scan-when-an-IndexC.patch,
0004-Remove-get_indexed_slices-method.patch, 0005-Update-system-tests-to-use-get_range_slices.patch,
0006-Remove-start_key-from-IndexClause-for-the-start_key-.patch, 0007-Respect-end_key-for-filtered-queries.patch
>
>
> From a comment on 1157:
> {quote}
> IndexClause only has a start key for get_indexed_slices, but it would seem that the reasoning
behind using 'KeyRange' for get_range_slices applies there as well, since if you know the
range you care about in the primary index, you don't want to continue scanning until you exhaust
'count' (or the cluster).
> Since it would appear that get_indexed_slices would benefit from a KeyRange, why not
smash get_(range|indexed)_slices together, and make IndexClause an optional field on KeyRange?
> {quote}

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