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https://issues.apache.org/jira/browse/CASSANDRA-6157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13866257#comment-13866257
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Jonathan Ellis commented on CASSANDRA-6157:
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FWIW this is a thing, but probably overkill here unless we are worried about
people having commas or spaces in their datacenter names:
https://github.com/FasterXML/jackson-dataformat-csv
> 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: 2.0.5
>
> Attachments: trunk-6157-v2.diff, trunk-6157-v3.diff,
> trunk-6157-v4.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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