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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-510) reading from large supercolumns is excessively slow
Date Tue, 03 Nov 2009 22:06:33 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773235#action_12773235
] 

Jonathan Ellis commented on CASSANDRA-510:
------------------------------------------

> Would it be useful to include a test that verifies that an unintended sub column is *not*
removed? 

sure.  could you write one? :)

> Why does cloneMe() call markForDeleteAt? 

to set the local and nonlocal deletion times.  (which have "sentinel" values indicating "not
really deleted" rather than a separate boolean flag.  so if there has been no delete it's
a no-op.)

> reading from large supercolumns is excessively slow
> ---------------------------------------------------
>
>                 Key: CASSANDRA-510
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-510
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>             Fix For: 0.5
>
>         Attachments: 0001-CASSANDRA-510-don-t-removeDeleted-on-the-whole-CF-befo.txt,
0002-convert-removeDeleted-on-SC-to-remove-oriented-instead.txt
>
>


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