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https://issues.apache.org/jira/browse/NIFI-6241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16843946#comment-16843946
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David Sargrad commented on NIFI-6241:
-------------------------------------
Is it easy to expose the structure of the inferred schema? I was looking to use
that inferred schema as a starting point for a schema that I further refine by
hand. I did not figure out how to do that.
> ConvertRecord Schema Inference fails to infer complete schema, or simply fails
> ------------------------------------------------------------------------------
>
> Key: NIFI-6241
> URL: https://issues.apache.org/jira/browse/NIFI-6241
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 1.9.2
> Reporter: David Sargrad
> Priority: Major
> Attachments: Reproduce_ConvertRecord_Shortcoming.xml,
> image-2019-04-24-13-38-16-605.png, image-2019-04-24-13-39-36-327.png,
> image-2019-04-24-13-41-00-704.png, image-2019-04-24-13-41-26-860.png,
> image-2019-04-24-13-43-28-531.png, image-2019-04-24-13-43-59-706.png,
> image-2019-04-24-17-03-10-728.png, image-2019-04-25-09-13-52-416.png,
> image-2019-04-25-09-19-15-406.png, image-2019-04-25-09-30-08-297.png,
> image-2019-05-20-09-01-02-488.png
>
>
> I've got a simple test flow as depicted below:
>
>
> !image-2019-04-24-13-38-16-605.png!
>
> The input XML is:
> !image-2019-04-24-13-41-26-860.png!
>
> The output JSON is almost correct, yet it is missing two critical fields
> (they both show up as "null". The null fields are
> {color:#ff0000}position{color} and {color:#ff0000}ncsmTrackData{color}. It is
> also missing all of the attributes on fltdMessage.
>
> !image-2019-04-24-13-41-00-704.png!
>
> The configuration of my ConvertRecord is:
> !image-2019-04-24-13-43-28-531.png!
>
> My XMLReader configuration is:
> !image-2019-04-24-13-43-59-706.png!
>
> Questions:
> # Why are these two fields null?
> # Why are all the fltdMessage attributes being ignored?
> It would seem that this is a bug, or at least a major shortcoming, in the
> schema inference capability. If there were a way for me to view the inferred
> schema, then I could use that as a starting point. However its not clear from
> the documentation how to view that schema.
>
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