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From "Stu Hood (JIRA)" <>
Subject [jira] Updated: (CASSANDRA-1472) Add bitmap secondary indexes
Date Wed, 22 Sep 2010 03:56:32 GMT


Stu Hood updated CASSANDRA-1472:

    Attachment: 1472-v4.tgz

Attaching v4:
* Cleaned up the join between primary and secondary indexes: now accomplished by the SSTR.PrimaryToSecondary
* Turned on lightweight compression by default, since it gave faster numbers on my CPU bound
* Fixed lots of bugs related to larger than memory indexes
* Added 0014 to skip short byte arrays rather than allocating any memory

> Add bitmap secondary indexes
> ----------------------------
>                 Key: CASSANDRA-1472
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Stu Hood
>             Fix For: 0.7.0
>         Attachments: 1472-v3.tgz, 1472-v4.tgz, anatomy.png
> Bitmap indexes are a very efficient structure for dealing with immutable data. We can
take advantage of the fact that SSTables are immutable by attaching them directly to SSTables
as a new component (supported by CASSANDRA-1471).

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