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https://issues.apache.org/jira/browse/CASSANDRA-193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12786612#action_12786612
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Hudson commented on CASSANDRA-193:
----------------------------------
Integrated in Cassandra #279 (See
[http://hudson.zones.apache.org/hudson/job/Cassandra/279/])
add manual repair through NodeProbe; patched by Stu Hood, reviewed by
junrao for
add AntiEntropyService; patched by Stu Hood, reviewed by junrao for
preparation for AntiEntropyService; patched by Stu Hood, reviewed by junrao for
add Merkle tree; patched by Stu Hood, reviewed by junrao for
preparation for Merkle tree; patched by Stu Hood, reviewed by junrao for
> Proactive repair
> ----------------
>
> Key: CASSANDRA-193
> URL: https://issues.apache.org/jira/browse/CASSANDRA-193
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Stu Hood
> Fix For: 0.5
>
> Attachments: 193-1-tree-preparation.diff,
> 193-1-tree-preparation.diff, 193-1-tree-preparation.diff,
> 193-1-tree-preparation.diff, 193-2-tree.diff, 193-2-tree.diff,
> 193-2-tree.diff, 193-2-tree.diff, 193-3-aes-preparation.diff,
> 193-3-aes-preparation.diff, 193-3-aes-preparation.diff,
> 193-3-aes-preparation.diff, 193-4-aes.diff, 193-4-aes.diff, 193-4-aes.diff,
> 193-4-aes.diff, 193-5-manual-repair.diff, 193-5-manual-repair.diff,
> 193-5-manual-repair.diff, 193-6-inverted-filter.diff,
> 193-6-inverted-filter.diff, 193-6-repair-explanation-and-node-rename.diff,
> 193-7-disable-caching-and-fix-minimum-token.diff, 193-breakdown.txt,
> 193-breakdown.txt, mktree-and-binary-tree.png
>
>
> Currently cassandra supports "read repair," i.e., lazy repair when a read is
> done. This is better than nothing but is not sufficient for some cases (e.g.
> catastrophic node failure where you need to rebuild all of a node's data on a
> new machine).
> Dynamo uses merkle trees here. This is harder for Cassandra given the CF
> data model but I suppose we could just hash the serialized CF value.
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