[jira] Commented: (CASSANDRA-967) Implement Read Repair on Range Queries

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12931816#action_12931816 ] 

Jonathan Ellis commented on CASSANDRA-967:
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bq. For consistency ONE the READ-REPAIR header is sent and the responding node performs a consistency check on each row after sending the response back

This isn't quite right -- it will miss repairing any rows that don't exist on the first node at all.

I think the right approach is to finish CASANDRA-982, moving the RR code into the coordinator node (instead of the data node). Then it will be easier to generalize quorum/read repair paths across row-get and range-query paths.

> Implement Read Repair on Range Queries
> --------------------------------------
>
>                 Key: CASSANDRA-967
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-967
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.6.7
>         Environment: Linux/Mac + Cassandra
>            Reporter: Vijay
>            Priority: Minor
>             Fix For: 0.8
>
>         Attachments: 0001-basic-read-repair-for-ranges-CASSANDRA-967.patch
>
>
> Implement Read Repair on Range scans.
> The idea is: To compare each rows in the list, if the responses mismatch then send back a message resolution for that row alone to resolve the conflicts.

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