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From "Jonathan Ellis (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-2982) Refactor secondary index api
Date Wed, 10 Aug 2011 01:21:27 GMT


Jonathan Ellis commented on CASSANDRA-2982:

Want to give a high-level overview of the changes here?

> Refactor secondary index api
> ----------------------------
>                 Key: CASSANDRA-2982
>                 URL:
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Core
>            Reporter: T Jake Luciani
>            Assignee: T Jake Luciani
>             Fix For: 1.0
>         Attachments: 2982-v1.txt
> Secondary indexes currently make some bad assumptions about the underlying indexes.
> 1. That they are always stored in other column families.
> 2. That there is a unique index per column
> In the case of CASSANDRA-2915 neither of these are true.  The new api should abstract
the search concepts and allow any search api to plug in.
> Once the code is refactored and basically pluggable we can remove the IndexType enum
and use class names similar to how we handle partitioners and comparators.
> Basic api is to add a SecondaryIndexManager that handles different index types per CF
and a SecondaryIndex base class that handles a particular type implementation.
> This requires major changes to ColumnFamilyStore and Table.IndexBuilder

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