Is there a way to adjust the parameter http.max_header_size (doc) from Elastic cloud?
I am using Elasticsearch through App Search.
When I perform a search request with header exceeding 8kb, I receive an error 431"Request header fields too large".
My issue is very similar to this ticket from 2014. The proposed solution is to adjust elasticsearch parameter http.max_header_size.
However I am using Elastic Cloud to configure the deployment, and it does not allow changing this parameter. I have tried to change it through adjusting user settings, but it only supports limited list of parameters, which does not include http.max_header_size.
Also, the documentation states that http.max_header_size defaults to 16kb, but what I observe is that it starts failing at 8kb.
This is a blocker for us, because we use the Header Authorization to embed visibility rules, and the search does not work at all for some users because the header is too large.
My team and I are working on this embedded filter issue. We were wondering, is there a plan on Elastic's side to make the App Search 8KB max header size configurable at some point? (Like the max header size in Elastic is 16KB by default but can be modified).