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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3885) Support multiple ranges in SliceQueryFilter
Date Tue, 05 Jun 2012 10:00:24 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13289292#comment-13289292
] 

Sylvain Lebresne commented on CASSANDRA-3885:
---------------------------------------------

On an unrelated note, I disagree with using Pair<ByteBuffer, ByteBuffer> everywhere
in the code, as it's not explicit enough (and it's a lot more character than worth it). So
I (strongly) think we should define a specific class for this (say ColumnRange). *But*, I'm
fine having that class extends {{Pair<ByteBuffer, ByteBuffer>}}, it's only a matter
of having an explicit name.
                
> Support multiple ranges in SliceQueryFilter
> -------------------------------------------
>
>                 Key: CASSANDRA-3885
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3885
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: David Alves
>             Fix For: 1.2
>
>         Attachments: CASSANDRA-3885.patch, CASSANDRA-3885.patch, CASSANDRA-3885.patch
>
>
> This is logically a subtask of CASSANDRA-2710, but Jira doesn't allow sub-sub-tasks.
> We need to support multiple ranges in a SliceQueryFilter, and we want querying them to
be efficient, i.e., one pass through the row to get all of the ranges, rather than one pass
per range.
> Supercolumns are irrelevant since the goal is to replace them anyway.  Ignore supercolumn-related
code or rip it out, whichever is easier.
> This is ONLY dealing with the storage engine part, not the StorageProxy and Command intra-node
messages or the Thrift or CQL client APIs.  Thus, a unit test should be added to ColumnFamilyStoreTest
to demonstrate that it works.

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