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The RDBMS (MySQL/PostgreSQL) connector generates document filenames
using the first 100 characters of the content column
(semantic_identifier). When the content contains newline characters
(\n), the resulting filename includes those newlines — for example:
Category: غير صحيح كليًا\nTitle: تفنيد حقائق....txt
RAGFlow's filename_type() function uses re.match(r".*\.txt$", filename)
to detect file types, but .* does not match newline characters by
default in Python regex. This causes the regex to fail, returning
FileType.OTHER, which triggers:
pythonraise RuntimeError("This type of file has not been supported
yet!")
As a result, all documents synced via the MySQL/PostgreSQL connector are
silently discarded. The sync logs report success (e.g., "399 docs
synchronized"), but zero documents actually appear in the dataset. This
is the root cause of issue #13001.
Root cause trace:
rdbms_connector.py → _row_to_document() sets semantic_identifier from
raw content (may contain \n)
connector_service.py → duplicate_and_parse() uses semantic_identifier as
the filename
file_service.py → upload_document() calls filename_type(filename)
file_utils.py → filename_type() regex .*\.txt$ fails on newlines →
returns FileType.OTHER
upload_document() raises "This type of file has not been supported yet!"
Fix: Sanitize the semantic_identifier in _row_to_document() by replacing
newlines and carriage returns with spaces before truncating to 100
characters.
Relates to: #13001, #12817
Type of change
Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: Ahmad Intisar <ahmadintisar@Ahmads-MacBook-M4-Pro.local>