Demonstration Project to attach large document to a record and index content of attachment

I want to do a proof of functionality for MariaDB.. I want to create small db table First Name, Last Name, fake SSN and attach Resumes to the records. I also want to create indexes for the content in the resumes so the resumes are searchable. Part of the test is to make sure very large documents can be attached and searched (determine if there is a limit to the document size. I just need to prove that MariaDB plus some other support produce like Elasticsearch can provide this functionality for a much larger project. Someone told me that the limit that MariaDB could index is only 65K characters but I think there must be a way to handle much larger files