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From "Jon Hermes (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1811) Cleanup smallest CFs first
Date Thu, 09 Dec 2010 15:33:02 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12969772#action_12969772
] 

Jon Hermes commented on CASSANDRA-1811:
---------------------------------------

Yes. 
v2 +1.

> Cleanup smallest CFs first
> --------------------------
>
>                 Key: CASSANDRA-1811
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1811
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.6.8
>            Reporter: Paul Querna
>            Assignee: Jon Hermes
>            Priority: Minor
>             Fix For: 0.6.9
>
>         Attachments: 1811-v2.txt, 1811.txt
>
>
> When running a cleanup, it would be an advantage to anti-compact the smallest SSTables
first, so that free disk space is gradually increased, so that larger sstables later on are
more likely to successfully anti-compact.
> In 0.6, currently Table.forceCleanup() just iterates the list of CFs in whatever order
they come from tableMetadata.getColumnFamilies, which is just a keySet().
> The code should be changed to sort the CFs, smallest first. 

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