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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-1525) Provide utils to pass -D parameters to UDFs
Date Mon, 11 May 2015 07:55:59 GMT

    [ https://issues.apache.org/jira/browse/FLINK-1525?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14537696#comment-14537696

ASF GitHub Bot commented on FLINK-1525:

Github user rmetzger commented on the pull request:

    In Hadoop, the `UserConfig` would probably be a `Configuration` object with key/value
    In Flink, we are trying to get rid of these untyped maps.
    Instead, I would recommend users to use a simple java class, like
    public static class MyConfig extends UserConfig {
      public long someLongValue;
      public int someInt;
      // this is optional
      public Map<String, String> toMap() { return null; }
    It can be used in a similar way to a Configuration object, but the compiler is able to
check the types.
    The `ParameterUtil` is implementing the UserConfig interface to expose the configuration
values through the Flink program & in the web interface.

> Provide utils to pass -D parameters to UDFs 
> --------------------------------------------
>                 Key: FLINK-1525
>                 URL: https://issues.apache.org/jira/browse/FLINK-1525
>             Project: Flink
>          Issue Type: Improvement
>          Components: flink-contrib
>            Reporter: Robert Metzger
>              Labels: starter
> Hadoop users are used to setting job configuration through "-D" on the command line.
> Right now, Flink users have to manually parse command line arguments and pass them to
the methods.
> It would be nice to provide a standard args parser with is taking care of such stuff.

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