[jira] [Commented] (OOZIE-2872) Address backward compatibility issue introduced by OOZIE-2748

["Satish Subhashrao Saley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OOZIE-2872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16284537#comment-16284537 ] 

Satish Subhashrao Saley commented on OOZIE-2872:
------------------------------------------------

Cherry-picked from master to branch-4.3.


> Address backward compatibility issue introduced by OOZIE-2748
> -------------------------------------------------------------
>
>                 Key: OOZIE-2872
>                 URL: https://issues.apache.org/jira/browse/OOZIE-2872
>             Project: Oozie
>          Issue Type: Bug
>            Reporter: Peter Bacsko
>            Assignee: Peter Bacsko
>             Fix For: 5.0.0b1, 4.3.1
>
>         Attachments: OOZIE-2872-001.patch, OOZIE-2872-002.patch
>
>
> OOZIE-2748 introduced a change which eliminates {{null}} arguments in certain actions. For example if the argument list in a Java action contains {{<arg></arg>}} then Oozie used to pass {{null}} in the args[] array to the {{main()}} method.
> After OOZIE-2748, {{null}} elements are removed. However, there are Oozie users who actually rely on this behaviour and now their workflows are broken.
> We should add a property which tells Oozie whether nulls should be inserted or not.



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