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Date: Mon, 7 Nov 2011 19:48:51 +0000 (UTC)
From: "Marcus Eriksson (Issue Comment Edited) (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
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Subject: [jira] [Issue Comment Edited] (CASSANDRA-2749) fine-grained control
 over data directories
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    [ https://issues.apache.org/jira/browse/CASSANDRA-2749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13145731#comment-13145731 ] 

Marcus Eriksson edited comment on CASSANDRA-2749 at 11/7/11 7:47 PM:
---------------------------------------------------------------------

rebased after CASSANDRA-3464, renameSSTable code removed
                
      was (Author: krummas):
    rebased after 3464, renameSSTable code removed
                  
> fine-grained control over data directories
> ------------------------------------------
>
>                 Key: CASSANDRA-2749
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2749
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Marcus Eriksson
>            Priority: Minor
>             Fix For: 1.1
>
>         Attachments: 0001-Make-it-possible-to-put-column-families-in-subdirect.patch, 2749_backwards_compatible_v1.patch, 2749_backwards_compatible_v2.patch, 2749_backwards_compatible_v3.patch, 2749_backwards_compatible_v4.patch, 2749_backwards_compatible_v4_rebase1.patch
>
>
> Currently Cassandra supports multiple data directories but no way to control what sstables are placed where. Particularly for systems with mixed SSDs and rotational disks, it would be nice to pin frequently accessed columnfamilies to the SSDs.
> Postgresql does this with tablespaces (http://www.postgresql.org/docs/9.0/static/manage-ag-tablespaces.html) but we should probably avoid using that name because of confusing similarity to "keyspaces."

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