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From "Jon Hermes (JIRA)" <>
Subject [jira] Commented: (CASSANDRA-1654) EC2Snitch
Date Mon, 25 Oct 2010 22:14:20 GMT


Jon Hermes commented on CASSANDRA-1654:

A region is a DC, a zone is a Rack.
The metadata is per-node, so it'll have to go somewhere in Config.

> EC2Snitch
> ---------
>                 Key: CASSANDRA-1654
>                 URL:
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Jon Hermes
>             Fix For: 0.7.1
> This will be a snitch extending AbstractNetworkTopologySnitch that pulls DC from instance
metadata placement_availability_zone.
> I don't think we can get rack information so the choice is between picking something
unique-per-machine to be the rack or assigning everything in the DC the same rack.  Second
seems easier, so let's use placement_availability_zone for rack, too.

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