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From "Stu Hood (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-674) New SSTable Format
Date Mon, 08 Aug 2011 18:24:28 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13081105#comment-13081105
] 

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

bq. Is replicate-on-write=disabled why uncompressed went from the highest latency to the lowest?
Yes: replicate-on-write triggers a huge number of reads, which are much more expensive in
trunk, due to 2319 not being included.

> 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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