[jira] [Commented] (CASSANDRA-5398) Remove localTimestamp from merkle-tree calculation (for tombstones)

["Christian Spriegel (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-5398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13663303#comment-13663303 ] 

Christian Spriegel commented on CASSANDRA-5398:
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[~jbellis]: Would this ticket be a candidate for 1.2? It seems repair is getting a lot of attention lately, so there might be interest in reducing overrepair whereever possible.
                
> Remove localTimestamp from merkle-tree calculation (for tombstones)
> -------------------------------------------------------------------
>
>                 Key: CASSANDRA-5398
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5398
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Christian Spriegel
>            Priority: Trivial
>         Attachments: V1.patch
>
>
> DeletedColumn and RangeTombstone use the local-timestamp to update the digest during repair.
> Even though its only a second-precision timestamp, I think it still causes some differences in the merkle tree, therefore causing overrepair.
> I attached a patch on trunk that adds a modified updateDigest() to DeletedColumn, which does not use the value field for its calculation.

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