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From "Brandon Williams (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-2491) A new config parameter, broadcast_address
Date Wed, 15 Jun 2011 22:50:47 GMT


Brandon Williams commented on CASSANDRA-2491:

One last thing I overlooked earlier is the snitches have getBCA().  This seems unnecessary
since anything that needs it can access DD, which is all the snitches are doing.  This changes
the snitch interface and breaks any custom snitches.

> A new config parameter, broadcast_address
> -----------------------------------------
>                 Key: CASSANDRA-2491
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>         Environment: x86_64 GNU/Linux
>            Reporter: Khee Chin
>            Assignee: Khee Chin
>            Priority: Trivial
>              Labels: patch
>             Fix For: 1.0
>         Attachments: 2491_broadcast_address.patch, 2491_broadcast_address_v2.patch, 2491_broadcast_address_v3.patch,
>   Original Estimate: 336h
>  Remaining Estimate: 336h
> A new config parameter, broadcast_address
> In a cluster setup where one or more nodes is behind a firewall and has a private ip
address, listen_address does not allow the hosts behind the firewalls to be discovered by
other nodes.
> Attached is a patch that introduces a new config parameter broadcast_address which allows
Cassandra nodes to explicitly specify their external ip address. 
> In addition, this allows listen_address to be set to on the already firewalled
> broadcast_address fallsback to listen_address when it is not stated.

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