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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-4871) get_paged_slice does not obey SlicePredicate
Date Wed, 21 Nov 2012 11:37:58 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-4871?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis updated CASSANDRA-4871:
--------------------------------------

    Issue Type: New Feature  (was: Improvement)
    
> get_paged_slice does not obey SlicePredicate
> --------------------------------------------
>
>                 Key: CASSANDRA-4871
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4871
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: API, Hadoop
>    Affects Versions: 1.1.6
>            Reporter: Scott Fines
>             Fix For: 1.1.6
>
>         Attachments: CASSANDRA-4816.patch
>
>
> When experimenting with WideRow support, I noticed that it is not possible to specify
a bounding SlicePredicate. This means that, no matter what you may wish, the entire Column
Family will be used during a get_paged_slice call. This is unfortunate, if (for example) you
are attempting to do MapReduce over a subset of your column range.
> get_paged_slice should support a SlicePredicate, which will bound the column range over
which data is returned. It seems like this SlicePredicate should be optional, so that existing
code is not broken--when the SlicePredicate is not specified, have it default to going over
the entire column range.

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