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