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https://issues.apache.org/jira/browse/ARIA-231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16002853#comment-16002853
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Tal Liron commented on ARIA-231:
--------------------------------
Yes, I was afraid of that. :/ I'd still like to keep this open as an
investigation, perhaps there is a way to catch this and at least give the user
a warning. We struggled with an issue today that was caused exactly by such a
mistake in a YAML.
> Parser does not show validation error if the same section appears twice
> -----------------------------------------------------------------------
>
> Key: ARIA-231
> URL: https://issues.apache.org/jira/browse/ARIA-231
> Project: AriaTosca
> Issue Type: Bug
> Reporter: Tal Liron
> Priority: Minor
>
> Investigate what happens when a YAML section appears twice, e.g.:
> {code}
> node_templates:
> my_template:
> requirements:
> ...
> requirements:
> ...
> {code}
> There are currently no errors for this. :/
> One would imagine that it's illegal YAML for a dict key to appear twice, and
> that the YAML parser should fail. If it's indeed a YAML parser bug, it might
> difficult to detect...
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