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Posted to common-issues@hadoop.apache.org by "Zesheng Wu (JIRA)" <ji...@apache.org> on 2013/04/03 04:19:15 UTC

[jira] [Updated] (HADOOP-9223) support specify config items through system property

     [ https://issues.apache.org/jira/browse/HADOOP-9223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zesheng Wu updated HADOOP-9223:
-------------------------------

    Fix Version/s: 2.0.0-alpha
           Status: Patch Available  (was: Open)
    
> support specify config items through system property
> ----------------------------------------------------
>
>                 Key: HADOOP-9223
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9223
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>    Affects Versions: 2.0.0-alpha
>            Reporter: Zesheng Wu
>            Priority: Minor
>              Labels: configuration, hadoop
>             Fix For: 2.0.0-alpha
>
>         Attachments: HADOOP-9223.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> The current hadoop config items are mainly interpolated from the *-site.xml files. In our production environment, we need a mechanism that can specify config items through system properties, which is something like the gflags in system built with C++, it's really very handy.
> The main purpose of this patch is to improve the convenience of hadoop systems, especially when people do testing or perf tuning, which always need to modify the *-site.xml files
> If this patch is applied, then people can start hadoop programs in this way: java -cp $class_path -Dhadoop.property.$name=$value $program

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