Hello, I am working on the customer's requirements, in which it is necessary to perform a global search not only by application attributes, but also by the content of a text document (doc, pdf).
Unfortunately Global Search functionality cannot be applied to the attachments for now.
We've registered a query for our responsible R&D team to implement such functionality in the upcoming releases but due to complexity of the task there is no specific ETA as of now.
There used to be an addon able to handle this (not sure what was the mechanism used though, elasticsearch or something else), so I guess there somehow a possibility. It is an often requested feature indeed.
I have performed a re-indexing query in Global Search Server to make the records up-to-date (i.e., re-indexed) so that global search can fetch all the available & indexed records.
We ran the re-indexing query successfully and could search the records in the global search engine and records are displayed. Followed the below link!