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Posted to commits@cassandra.apache.org by "Jason Brown (JIRA)" <ji...@apache.org> on 2018/03/29 05:51:00 UTC
[jira] [Comment Edited] (CASSANDRA-7839) Support standard EC2
naming conventions in Ec2Snitch
[ https://issues.apache.org/jira/browse/CASSANDRA-7839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16418478#comment-16418478 ]
Jason Brown edited comment on CASSANDRA-7839 at 3/29/18 5:50 AM:
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Rebased and updated a few things based on a self-review (six months later ...). Mostly added tests and comments (and fixed a bug).
Also, I rediscovered a small feature that I added > 5 years ago: CASSANDRA-5155. That threw a small wrench into the logic here, but I've accounted for it and documented it, as well.
||7839||
|[branch|https://github.com/jasobrown/cassandra/tree/7839]|
|[utests & dtests|https://circleci.com/gh/jasobrown/workflows/cassandra/tree/7839]|
[~jolynch] Do you mind taking a stab at reviewing? Additionally, if [~pauloricardomg] is around and has time, I'd appreciate any feedback you have, as well.
was (Author: jasobrown):
Rebased and updated a few things based on a self-review (six months later ...). Mostly added tests and comments (and fixed a bug).
||7839||
|[branch|https://github.com/jasobrown/cassandra/tree/7839]|
|[utests & dtests|https://circleci.com/gh/jasobrown/workflows/cassandra/tree/7839]|
||
[~jolynch] Do you mind taking a stab at reviewing? Additionally, if [~pauloricardomg] is around and has time, I'd appreciate any feedback you have, as well.
> Support standard EC2 naming conventions in Ec2Snitch
> ----------------------------------------------------
>
> Key: CASSANDRA-7839
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7839
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Gregory Ramsperger
> Assignee: Gregory Ramsperger
> Priority: Major
> Labels: docs-impacting
> Attachments: CASSANDRA-7839-aws-naming-conventions.patch
>
>
> The EC2 snitches use datacenter and rack naming conventions inconsistent with those presented in Amazon EC2 APIs as region and availability zone. A discussion of this is found in CASSANDRA-4026. This has not been changed for valid backwards compatibility reasons. Using SnitchProperties, it is possible to switch between the legacy naming and the full, AWS-style naming.
> Proposal:
> * introduce a property (ec2_naming_scheme) to switch naming schemes.
> * default to current/legacy naming scheme
> * add support for a new scheme ("standard") which is consistent AWS conventions
> ** data centers will be the region name, including the number
> ** racks will be the availability zone name, including the region name
> Examples:
> * * legacy* : datacenter is the part of the availability zone name preceding the last "\-" when the zone ends in \-1 and includes the number if not \-1. Rack is the portion of the availability zone name following the last "\-".
> ** us-west-1a => dc: us-west, rack: 1a
> ** us-west-2b => dc: us-west-2, rack: 2b;
> * *standard* : datacenter is the part of the availability zone name preceding zone letter. rack is the entire availability zone name.
> ** us-west-1a => dc: us-west-1, rack: us-west-1a
> ** us-west-2b => dc: us-west-2, rack: us-west-2b;
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