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From "Pallavi Rao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FALCON-1573) Supply user-defined properties to Oozie workflows during schedule
Date Tue, 17 Nov 2015 12:18:11 GMT

    [ https://issues.apache.org/jira/browse/FALCON-1573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15008566#comment-15008566
] 

Pallavi Rao commented on FALCON-1573:
-------------------------------------

Had an offline conversation with [~ajayyadava]. It is absolutely fine to check this patch
in provided we do provide the namespace support (at least for user properties supplied at
schedule time) before the next release.

So, please go ahead and commit this.

> Supply user-defined properties to Oozie workflows during schedule
> -----------------------------------------------------------------
>
>                 Key: FALCON-1573
>                 URL: https://issues.apache.org/jira/browse/FALCON-1573
>             Project: Falcon
>          Issue Type: New Feature
>          Components: oozie
>    Affects Versions: trunk
>            Reporter: Daniel del Castillo
>            Assignee: Daniel del Castillo
>            Priority: Minor
>             Fix For: trunk
>
>         Attachments: FALCON-1573-v1.patch, FALCON-1573-v2.patch, FALCON-1573-v3.patch
>
>
> The work in FALCON-1434 added the ability to specify properties for the purpose of enabling
scheduler selection. However, this could be more generally useful as a means for users to
submit custom properties that will be visible in Oozie workflows.
> This will enable users to reference properties in the entity XML itself and passing these
properties down to workflows. For example, a process scheduled with the command:
> {code}
> bin/falcon entity -schedule -type process -name helloFalconProcess -properties custom.property:HEY
> {code}
> can reference the property _custom.property_ in the process XML as
> {code:xml}
> <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
> <process name="helloFalconProcess" xmlns="uri:falcon:process:0.1">
>   ...
>   <properties>
>     ...
>     <property name="customProperty" value="${coord:conf('custom.property')}"/>
>     ...
>   </properties>
>   ...
> </process>
> {code}
> An Oozie workflow can then easily make use of such property:
> {code:xml}
> <workflow-app xmlns="uri:oozie:workflow:0.4" name="hello-falcon-wf">
>   ...
>     <java>
>       ...
>       <arg>--customValue=${customProperty}</arg>
>       ...
>     </java>
>     ...
> </workflow-app>
> {code}



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