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From "Arpit Gupta (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (YARN-673) Remove yarn-default.xml
Date Fri, 14 Jun 2013 22:23:20 GMT

     [ https://issues.apache.org/jira/browse/YARN-673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Arpit Gupta reassigned YARN-673:

    Assignee: Arpit Gupta
> Remove yarn-default.xml
> -----------------------
>                 Key: YARN-673
>                 URL: https://issues.apache.org/jira/browse/YARN-673
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Siddharth Seth
>            Assignee: Arpit Gupta
> The default configuration files serve 2 purposes
> 1. Documenting available config parameters, and their default values.
> 2. Specifying default values for these parameters.
> An xml file hidden inside a jar is not necessarily the best way to document parameters.
This could be moved into the documentation itself.
> Default values already exist in code for most parameters. There's no need to specify
them in two places. We need to make sure defaults exist for all parameters before attempting
> Having default configuration files just bloats job conf files; over 450 parameters, out
of which <20 are likely job specific params. JobConf files end up being rather big, and
the memory footprint of the conf object is large (>300KB last I checked).

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