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Date: Wed, 4 Jan 2012 15:10:40 +0000 (UTC)
From: "Sylvain Lebresne (Resolved) (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
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Subject: [jira] [Resolved] (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:all-tabpanel ]

Sylvain Lebresne resolved CASSANDRA-2749.
-----------------------------------------

    Resolution: Fixed
      Assignee: Sylvain Lebresne

Committed with nits above fixed, thanks Pavel.
                
> 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: Sylvain Lebresne
>            Priority: Minor
>             Fix For: 1.1
>
>         Attachments: 0001-2749.patch, 0001-Make-it-possible-to-put-column-families-in-subdirect.patch, 0001-non-backwards-compatible-patch-for-2749-putting-cfs-.patch.gz, 0002-fix-unit-tests.patch, 0003-Fixes.patch, 2749.tar.gz, 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, 2749_not_backwards.tar.gz, 2749_proper.tar.gz
>
>
> 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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