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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-5722) Cleanup should skip sstables that don't contain data outside a nodes ranges
Date Sat, 13 Jul 2013 21:09:48 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13707833#comment-13707833
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Jonathan Ellis edited comment on CASSANDRA-5722 at 7/13/13 9:08 PM:
--------------------------------------------------------------------

Note to self, I do think we're 80% of the way to CASSANDRA-2524 here, so I should give that
to you next. :)

Edit: Maybe 50%, looks like SSTScanner only takes a single Range as of yet.
                
      was (Author: jbellis):
    Note to self, I do think we're 80% of the way to CASSANDRA-2524 here, so I should give
that to you next. :)
                  
> Cleanup should skip sstables that don't contain data outside a nodes ranges
> ---------------------------------------------------------------------------
>
>                 Key: CASSANDRA-5722
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5722
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Nick Bailey
>            Assignee: Tyler Hobbs
>             Fix For: 2.0.1
>
>         Attachments: 0001-Skip-cleanup-when-unneeded.patch
>
>
> Right now cleanup is optimized to simply delete sstables that *only* contain data that
doesn't belong on the node, for all other sstables though, it will read them, check each row,
and write out new sstables.
> Cleanup could be optimized to look at an sstable and determine that all data within the
sstable does belong on a node, and therefore skip re-writing that sstable. This would make
cleanup essentially a noop in the case where all data on a node belongs on that node.

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