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https://issues.apache.org/jira/browse/CASSANDRA-3635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13170310#comment-13170310
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Jonathan Ellis commented on CASSANDRA-3635:
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I don't think we should put this in 0.8. The repair problems there are a lot
deeper than this. I'm fine with posting a backport patch if people want to run
a custom build with it, but this shouldn't go in anything earlier than 1.0.
(I'd prefer 1.1 TBH.)
Since compaction throughput does not include validation anymore, I'd prefer to
default to something like 12/4 instead of effectively increasing the impact of
compaction + repair out of the box.
> Throttle validation separately from other compaction
> ----------------------------------------------------
>
> Key: CASSANDRA-3635
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3635
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Sylvain Lebresne
> Assignee: Sylvain Lebresne
> Priority: Minor
> Labels: repair
> Fix For: 0.8.10, 1.0.7
>
> Attachments: 0001-separate-validation-throttling.patch
>
>
> Validation compaction is fairly ressource intensive. It is possible to
> throttle it with other compaction, but there is cases where you really want
> to throttle it rather aggressively but don't necessarily want to have minor
> compactions throttled that much. The goal is to (optionally) allow to set a
> separate throttling value for validation.
> PS: I'm not pretending this will solve every repair problem or anything.
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