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From "Marcus Eriksson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8267) Only stream from unrepaired sstables during incremental repair
Date Mon, 24 Nov 2014 15:05:12 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14223034#comment-14223034
] 

Marcus Eriksson commented on CASSANDRA-8267:
--------------------------------------------

To solve this we need to tell a node whether or not this is an incremental repair when requesting
ranges from it. This breaks streaming message versioning, meaning we would not be able to
stream between two nodes unless they were both upgraded, which would suck in a minor release.

One "solution" could be to only break streaming for incremental repairs (when they are initiated
on an upgraded node) by adding a new IncrementalStreamRequest message and failing early if
we notice that not all endpoints included in the incremental repair are upgraded. This would
make old-style repairs still work since they don't use the new message (and full repairs are
the default in 2.1).

WDYT [~yukim]? Would this be acceptable or do you have a better solution? We kind of have
to fix this in 2.1 since it makes incremental repairs quite bad.

> Only stream from unrepaired sstables during incremental repair
> --------------------------------------------------------------
>
>                 Key: CASSANDRA-8267
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8267
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Marcus Eriksson
>            Assignee: Marcus Eriksson
>             Fix For: 2.1.3
>
>
> Seems we stream from all sstables even if we do incremental repair, we should limit this
to only stream from the unrepaired sstables if we do incremental repair



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