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From "Nicolas Favre-Felix (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4482) In-memory merkle trees for repair
Date Wed, 15 Aug 2012 08:36:38 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4482?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13434880#comment-13434880
] 

Nicolas Favre-Felix commented on CASSANDRA-4482:
------------------------------------------------

bq. What is a tombstone-only repair?

This is a separate feature that we provide, that runs the AES on tombstones exclusively. We
provide it for users who repair in order to avoid reappearing tombstones rather that to reduce
entropy. The main point is that repair and tombstone repair are both guaranteed to result
in a synchronized cluster, which is not the case for incremental repair.

Thanks for the review offer, I will extract and clean up the patch and submit it to this ticket.
                
> In-memory merkle trees for repair
> ---------------------------------
>
>                 Key: CASSANDRA-4482
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4482
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Marcus Eriksson
>
> this sounds cool, we should reimplement it in the open source cassandra;
> http://www.acunu.com/2/post/2012/07/incremental-repair.html

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