[jira] [Commented] (NIFI-1899) Create ListenSMTP & ExtractEmailAttachment processors

[ASF GitHub Bot (JIRA)]

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https://issues.apache.org/jira/browse/NIFI-1899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15311415#comment-15311415
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ASF GitHub Bot commented on NIFI-1899:
--------------------------------------

Github user trixpan commented on the issue:

    https://github.com/apache/nifi/pull/483
  
    @bbende
    
    You are correct, the provenance trail is there, however, generally it seems 
like the Split* processors tend to add the split source information as well in 
the shape of 
    
    > `segment.original.filename        The filename of the parent FlowFile`
    
    The behaviour is also documented 
[here](https://nifi.apache.org/docs/nifi-docs/html/developer-guide.html#split-content-one-to-many):
    
    
![image](https://cloud.githubusercontent.com/assets/3108527/15729540/95c1b17a-28a8-11e6-9589-3471a8bd8e31.png)
    
    For example, assuming I use the processors to perform data archival, having 
the parent.uuid as an attribute would allow me to draw a direct and accessible 
relationship between the two flowfiles.
    
    Maybe I am overcomplicating but I simply couldn't find a documented way of 
accessing the provenance parent UUID from the Expression Language.


> Create ListenSMTP & ExtractEmailAttachment processors
> -----------------------------------------------------
>
>                 Key: NIFI-1899
>                 URL: https://issues.apache.org/jira/browse/NIFI-1899
>             Project: Apache NiFi
>          Issue Type: New Feature
>            Reporter: Andre
>




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