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From "Ryan King (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-1610) Pluggable Compaction
Date Tue, 17 May 2011 16:52:48 GMT


Ryan King commented on CASSANDRA-1610:


> Pluggable Compaction
> --------------------
>                 Key: CASSANDRA-1610
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Chris Goffinet
>            Assignee: Alan Liang
>            Priority: Minor
>              Labels: compaction
>             Fix For: 1.0
>         Attachments: 0001-move-compaction-code-into-own-package.patch, 0002-Pluggable-Compaction-and-Expiration.patch
> In CASSANDRA-1608, I proposed some changes on how compaction works. I think it also makes
sense to allow the ability to have pluggable compaction per CF. There could be many types
of workloads where this makes sense. One example we had at Digg was to completely throw away
certain SSTables after N days.
> The goal of this ticket is to make compaction pluggable enough to support compaction
based on max timestamp ordering of the sstables while satisfying max sstable size, min and
max compaction thresholds. Another goal is to allow expiration of sstables based on a timestamp.

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