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From "Jeff Jirsa (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7306) Support "edge dcs" with more flexible gossip
Date Fri, 11 Dec 2015 17:09:11 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15053033#comment-15053033
] 

Jeff Jirsa commented on CASSANDRA-7306:
---------------------------------------

Missing dtests primarily. Probably going to add some more gossip-related unit tests, but dtests.





> Support "edge dcs" with more flexible gossip
> --------------------------------------------
>
>                 Key: CASSANDRA-7306
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7306
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Distributed Metadata
>            Reporter: Tupshin Harper
>            Assignee: Jeff Jirsa
>              Labels: ponies
>
> As Cassandra clusters get bigger and bigger, and their topology becomes more complex,
there is more and more need for a notion of "hub" and "spoke" datacenters.
> One of the big obstacles to supporting hundreds (or thousands) of remote dcs, is the
assumption that all dcs need to talk to each other (and be connected all the time).
> This ticket is a vague placeholder with the goals of achieving:
> 1) better behavioral support for occasionally disconnected datacenters
> 2) explicit support for custom dc to dc routing. A simple approach would be an optional
per-dc annotation of which other DCs that DC could gossip with.



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