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https://issues.apache.org/jira/browse/CASSANDRA-6157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14376568#comment-14376568
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Aleksey Yeschenko commented on CASSANDRA-6157:
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I've seen it. Should've noticed this a year ago, but probably was on vacation.
Sorry about that. I also believe that Jonathan commented on the particular
approach, and I agree that having an override map is a bit of an overkill. One
global on/off switch plus a list of blacklist DCs to consider when the global
switch is on should be more than enough.
Putting CSV in YAML is conceptually ugly, and so is mixing types here. Plus,
the solution as it is stands now supports selective enablement vs. selective
disablement (a blacklist), contrary to the goal of the ticket.
> Selectively Disable hinted handoff for a data center
> ----------------------------------------------------
>
> Key: CASSANDRA-6157
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6157
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: sankalp kohli
> Assignee: sankalp kohli
> Priority: Minor
> Fix For: 2.0.6
>
> Attachments: super-csv-2.1.0.jar, trunk-6157-v2.diff,
> trunk-6157-v3.diff, trunk-6157-v4.diff, trunk-6157-v5.diff, trunk-6157.txt
>
>
> Cassandra supports disabling the hints or reducing the window for hints.
> It would be helpful to have a switch which stops hints to a down data center
> but continue hints to other DCs.
> This is helpful during data center fail over as hints will put more
> unnecessary pressure on the DC taking double traffic. Also since now
> Cassandra is under reduced reduncany, we don't want to disable hints within
> the DC.
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