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Posted to commits@cassandra.apache.org by "Stu Hood (JIRA)" <ji...@apache.org> on 2011/06/24 09:36:48 UTC

[jira] [Commented] (CASSANDRA-674) New SSTable Format

    [ https://issues.apache.org/jira/browse/CASSANDRA-674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13054287#comment-13054287 ] 

Stu Hood commented on CASSANDRA-674:
------------------------------------

To clarify, I included the "trunk gz 6" result since it is essentially a lower bound for block-based compression. On the other hand, there is some low hanging fruit that could decrease the size of the 674-2319 by another 1 to 1.5 bytes per column.

> New SSTable Format
> ------------------
>
>                 Key: CASSANDRA-674
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-674
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Stu Hood
>             Fix For: 1.0
>
>         Attachments: 674-v1.diff, 674-v2.tgz, 674-v3.tgz, 674-ycsb.log, trunk-ycsb.log
>
>
> Various tickets exist due to limitations in the SSTable file format, including #16, #47 and #328. Attached is a proposed design/implementation of a new file format for SSTables that addresses a few of these limitations.
> This v2 implementation is not ready for serious use: see comments for remaining issues. It is roughly the format described here: http://wiki.apache.org/cassandra/FileFormatDesignDoc 

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