[jira] [Created] (NIFI-16314) Trim trailing spaces in Split*, UnpackContent, and ExtractEmailAttachments @WritesAttribute names

["Joe Witt (Jira)" <ji...@apache.org>]

Joe Witt created NIFI-16314:
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             Summary: Trim trailing spaces in Split*, UnpackContent, and ExtractEmailAttachments @WritesAttribute names
                 Key: NIFI-16314
                 URL: https://issues.apache.org/jira/browse/NIFI-16314
             Project: Apache NiFi
          Issue Type: Task
            Reporter: Joe Witt
            Assignee: Joe Witt


Several processors document FlowFile attributes with a trailing space in @WritesAttribute. Generated NAR docs therefore advertise names that do not exist.

Runtime already writes the unspaced keys (FragmentAttributes.SEGMENT_ORIGINAL_FILENAME, CoreAttributes.FILENAME, ExtractEmailAttachments.ATTACHMENT_ORIGINAL_FILENAME). This is documentation only.

NIFI-16313 fixed the same paste on SegmentContent, including a duplicate annotation that also claimed a filename rewrite. That rewrite claim is unique to SegmentContent and is already handled there. This ticket is the remaining mechanical trim.

Processors / attributes:
- SplitText, SplitJson, SplitXml, SplitContent, SplitRecord, PartitionRecord, SplitAvro, UnpackContent: "segment.original.filename "
- ExtractEmailAttachments: "filename " and "email.attachment.parent.filename "

Out of scope:
- Do not change what onTrigger writes.
- Do not re-open UnpackContent CRC behavior (NIFI-15718).
- Do not include ParseSyslog/ParseSyslog5424 syslog.sender, UpdateDatabaseTable output.path, or RetryFlowFile property-as-key docs.

Proposed change:
- Trim the attribute names in the annotations to match the constants actually put on FlowFiles.



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