[jira] Commented: (CASSANDRA-47) SSTable compression

["Holden Robbins (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-47?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12981111#action_12981111 ] 

Holden Robbins commented on CASSANDRA-47:
-----------------------------------------

Feel free to tell me I'm off-base here, but what about doing something super simple like storing the segment as compressed and un-compressing when it's accessed on disk. Compaction process can possibly clean up uncompressed segments? I'm thinking this would solve my particular use case well (log data) since our requirements are to store a large amount of data but the majority of the reads will only be on a small subset of recently inserted data.

If it sounds like a decent approach I'll be happy to put together a patch.

> SSTable compression
> -------------------
>
>                 Key: CASSANDRA-47
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-47
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Priority: Minor
>             Fix For: 0.8
>
>
> We should be able to do SSTable compression which would trade CPU for I/O (almost always a good trade).

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