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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-3929) Support row size limits
Date Thu, 06 Sep 2012 04:42:11 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13449412#comment-13449412
] 

Jonathan Ellis edited comment on CASSANDRA-3929 at 9/6/12 3:41 PM:
-------------------------------------------------------------------

I think we also need to limit

- on flush, since there's no need to knowingly save data we don't want
- on LCR as well as PCR, since enough small rows can still overflow to LCR mode

Also: if I'm understanding correctly, we're tombstoning the beginning of the row here?  ISTM
tombstoning the end of the row will be more in keeping with our advice that "querying from
the start of the row in comparator order is fastest."
                
      was (Author: jbellis):
    I think we also need to limit

- on flush, since there's no need to knowingly save data we don't want
- on LCR as well as PCR, since enough small rows can still overflow to LCR mode

Also: if I'm understanding correctly, we're tombstoneing the beginning of the row here?  ISTM
tombstoning the end of the row will be more in keeping with our advice that "querying from
the start of the row in comparator order is fastest."
                  
> Support row size limits
> -----------------------
>
>                 Key: CASSANDRA-3929
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3929
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>    Affects Versions: 1.2.1
>            Reporter: Jonathan Ellis
>            Assignee: Dave Brosius
>            Priority: Minor
>              Labels: ponies
>             Fix For: 1.2.1
>
>         Attachments: 3929.txt
>
>
> We currently support expiring columns by time-to-live; we've also had requests for keeping
the most recent N columns in a row.

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