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From "Sylvain Lebresne (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3362) allow sub-row repair
Date Wed, 16 Nov 2011 13:49:51 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13151199#comment-13151199
] 

Sylvain Lebresne commented on CASSANDRA-3362:
---------------------------------------------

Right now we're using tokens range to create the merkle tree, so we cannot repair less than
a token without major changes to repair.
Besides, repair needs to use the same "atoms" on all the node it repairs, so I don't think
the row index blocks would qualify since they differ from node to node.

Overall, I don't see how that can be done with the current repair.
                
> allow sub-row repair
> --------------------
>
>                 Key: CASSANDRA-3362
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3362
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Sylvain Lebresne
>            Priority: Minor
>              Labels: repair
>
> With large rows, it would be nice to not have to send an entire row if a small part is
out of sync.  Could we use the row index blocks as repair atoms instead of the full row?

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