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From "Todd Blose (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CASSANDRA-990) Replace cassandra.xml with cassandra.yaml
Date Fri, 16 Apr 2010 05:57:26 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Blose updated CASSANDRA-990:
---------------------------------

    Attachment: test_conf_cassandra.yaml.txt

> Replace cassandra.xml with cassandra.yaml
> -----------------------------------------
>
>                 Key: CASSANDRA-990
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-990
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.7
>            Reporter: Todd Blose
>            Assignee: Todd Blose
>         Attachments: CASSANDRA-990.patch, cassandra.yaml, test_conf_cassandra.yaml.txt
>
>
> This is an entire rewrite of the XML storage configuration to YAML, inspired by the discussion
in CASSANDRA-671.
> DatabaseDescriptor now parses conf/cassandra.yaml. It behaves the same way as before,
but instead of dealing with an XML parse tree, a yaml parser is now created that associates
a custom Java class with the entire config (Config). In addition, keyspace and column family
YAML entries are deserialized to KSMetaData and CFMetaData instances, respectively.
> This was implemented using SnakeYaml (http://code.google.com/p/snakeyaml/).
> There are numerous benefits to this new approach: 1) a complete shifting away from an
outdated, verbose data format 2) a cleaner, less bulky, human-readable config 3) significantly
less code 4) simplicity of obtaining default values
> Attached along with the patch are the replacement configurations for conf/cassandra.xml
and test/conf/cassandra.xml, to emphasize the benefits of the transition, should the community
approve of it.

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