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From "Ravi Prakash (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2119) "hdfs version" should print out information similar to what "hadoop version" prints out
Date Mon, 11 Jul 2011 17:01:02 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13063435#comment-13063435
] 

Ravi Prakash commented on HDFS-2119:
------------------------------------

I tried reducing the duplicated code, but unfortunately its tough. 
1. If I try to use common's VersionInfo.java to accept an argument for the name of the package
whose annotation would be read, I would have to call {noformat}
        Class myClass = ClassLoader.getSystemClassLoader().loadClass(args[0]);
        version = myClass.getPackage().getAnnotation(HdfsVersionAnnotation.class);
{noformat} and HdfsVersionAnnotation cannot defined in common. 
2. Since I can't extend annotations, HdfsVersionAnnotation can't be extended from HadoopVersionAnnotation
3. If I were to write create HadoopVersionAnnotation from hdfs/src/saveVersion.sh , there'd
be ambiguity in the package info.

Can anyone suggest a way I can reduce the duplicated code? Or should I create a properties
file? Any suggestions anyone?

> "hdfs version" should print out information similar to what "hadoop version" prints out
> ---------------------------------------------------------------------------------------
>
>                 Key: HDFS-2119
>                 URL: https://issues.apache.org/jira/browse/HDFS-2119
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 0.22.0
>            Reporter: Ravi Prakash
>            Assignee: Ravi Prakash
>            Priority: Minor
>             Fix For: 0.22.0
>
>         Attachments: HDFS-2119.1.patch, HDFS-2119.2.patch
>
>
> Implement version in hdfs

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