I'm using Kibana for querying a 3 node Elasticsearch cluster, both version 7.9.2. My Elasticsearch cluster and all of its indexes are healthy and in a green state as reported by _cat/health and _cat/indices?v.
I query an index with a single primary and single replica using KQL with the Kibana Discovery pane. In the query, I modify the date-range so that it will get all of the data in the index, which covers a years worth of data. In this same query, I also added a single filter that checks that a field exists for the returned documents, via the exists operator.
My problem is that I pretty consistently get the error in the bottom right of the Kibana GUI that says:
Error loading data [status_exception] error while executing search See the full error
If I click "See the full error" to see the detailed message it states:
Error loading data Bad Request search_phase_execution_exception all shards failed
And in that same detailed message, the stack trace has references to the Kibana URL. Hoping someone can point me in the right direction.