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https://issues.apache.org/jira/browse/NIFI-7420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17100143#comment-17100143
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Mark Payne commented on NIFI-7420:
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Thanks @ottobackwards I will take a look. I will need to also make sure to
update the Migration Guidance
> HandleHttpRequest puts form data content into attributes
> --------------------------------------------------------
>
> Key: NIFI-7420
> URL: https://issues.apache.org/jira/browse/NIFI-7420
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Otto Fowler
> Assignee: Otto Fowler
> Priority: Major
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> HandleHttpParameters writes attributes for get return from
> HttpServletRequest.getParameters().
> getParameters() is defined as returning a value for each query part OR form
> data value.
> As such, large bits of data, send as part of multipart/form data will end up
> in the attributes, which is not what we want, and that data is recorded
> elsewhere. If the filename is set on the form data, it will NOT be in the
> list. But the file name is optional, so each parameter _could_ have large
> amounts of data.
> The processor also does not document writing this attribute.
> The processor should NOT write parameter values for parameters that are part
> of the form data if possible.
> an example from log attributes:
> {noformat}
> Key: 'http.multipart.content.type'
> Value: 'text/plain'
> Key: 'http.multipart.fragments.sequence.number'
> Value: '1'
> Key: 'http.multipart.fragments.total.number'
> Value: '3'
> Key: 'http.multipart.name'
> Value: 'upload-data'
> Key: 'http.multipart.size'
> Value: '18'
> Key: 'http.param.DataTwo'
> Value: 'DATA TWO!!!!'
> Key: 'http.param.data1'
> Value: 'DATA ONE!!!'
> Key: 'http.param.upload-data'
> Value: 'Flowfile content!!'
> {noformat}
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