How to store percolate queries and documents

Elastic Stack Elasticsearch
10

Yeah, I thought the same way, but from the documentation:

PUT /my-index
{
    "mappings": {
        "_doc": {
            "properties": {
                "message": {
                    "type": "text"
                },
                "query": {
                    "type": "percolator"
                }
            }
        }
    }
}

and the same index is using to percolate with the stored document here:

PUT /my-index/_doc/2
{
  "message" : "A new bonsai tree in the office"
}

GET /my-index/_search
{
    "query" : {
        "percolate" : {
            "field": "query",
            "index" : "my-index",
            "type" : "_doc",
            "id" : "2",
            "version" : 1 
        }
    }
}

Probably, it's just an example, but since percolator data mapping type was introduced, it's possible to use a single index both for documents and percolate queries, checked it right now: es-6-percolate-api.sh · GitHub

What's more interesting, in the documentation for 5.6 version for the same topic there's a separate type instead of field:

PUT /my-index
{
    "mappings": {
        "doctype": {
            "properties": {
                "message": {
                    "type": "text"
                }
            }
        },
        "queries": {
            "properties": {
                "query": {
                    "type": "percolator"
                }
            }
        }
    }
}

All this stuff in the docs a little bit confusing me that's why the topic question was born.

@Bernt_Rostad, @Thomas_Ardal what do you think?