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From "Binish A.R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FALCON-265) reverse lookup for falcon entity definition
Date Thu, 16 Jan 2014 10:41:23 GMT

    [ https://issues.apache.org/jira/browse/FALCON-265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13873244#comment-13873244
] 

Binish A.R commented on FALCON-265:
-----------------------------------

I am looking more at a cmdline solution. 
Right now, the dependency option displays dependent feed, but it does not mention whether
its an input or output dependency. I am looking at some switch which will let me choose input
or output dependency and list only the relevant one. For instance, consider process_A consuming
feed_A1 and feed_A2 and generating feed_B as output.

{quote}
$ falcon entity -type feed -name feed_A1 -dependency -deptype input 
 (process) process_A
$ falon entity -type process -name process_A -dependency 
 (input_feeds)        feed_A1, feed_A2
 (output_feeds)  feed_B
{quote}

FALCON-256 speaks about generating DOT files for graphviz consumption, may not be helpful
in production where we don't have a xserver running.

> reverse lookup for falcon entity definition
> -------------------------------------------
>
>                 Key: FALCON-265
>                 URL: https://issues.apache.org/jira/browse/FALCON-265
>             Project: Falcon
>          Issue Type: Improvement
>          Components: general
>            Reporter: Binish A.R
>
> Can we have an option to reverse lookup an entityspecification?
> For instance, 
> 1. Given a path find the corresponding feed definition.
> 2. Given an input feed name, list the corresponding processes.
> Note that [2] is not the same as -dependency option, since depedency option list all
dependencies, including both input and output.



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