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From Piotr Kołaczkowski (JIRA) <>
Subject [jira] [Commented] (CASSANDRA-4871) get_paged_slice does not obey SlicePredicate
Date Wed, 02 Jan 2013 11:34:12 GMT


Piotr Kołaczkowski commented on CASSANDRA-4871:

error: patch failed: src/java/org/apache/cassandra/hadoop/
error: src/java/org/apache/cassandra/hadoop/ patch does not

Can you rebase the patch, please?
> get_paged_slice does not obey SlicePredicate
> --------------------------------------------
>                 Key: CASSANDRA-4871
>                 URL:
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: API, Hadoop
>    Affects Versions: 1.1.0
>            Reporter: Scott Fines
>            Priority: Minor
>             Fix For: 2.0
>         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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