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https://issues.apache.org/jira/browse/OOZIE-859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13289595#comment-13289595
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Mona Chitnis commented on OOZIE-859:
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Yes this seems like a bug. A better approach than modifying at the xml creation
level would be to fix EL expression resolution to handle a blank reference
> OozieClient has trouble with "blank" properties
> -----------------------------------------------
>
> Key: OOZIE-859
> URL: https://issues.apache.org/jira/browse/OOZIE-859
> Project: Oozie
> Issue Type: Bug
> Reporter: John Armstrong
> Priority: Minor
>
> When writing the Properties in a JobSubmit object as XML to an
> HttpConnection's OutputStream, it trims the string values. If the string is
> empty (""), this leads to no value in the Job Configuration, which causes
> problems in workflows expecting a value for the property.
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