The directory read is not applicable to the binary file type.
All the source files in the directory must contain the same metadata.
All the files must have data in the same format. For example, delimiters, header fields, and escape characters must be same.
All the files under a specified directory are parsed. The files under subdirectories are not parsed.
The connector does not perform any validation if there are multiple blob formats in the directory you select and might result into errors.