fieldstats-murmur3.md

Install the murmur3 plugin

./bin/elasticsearch-plugin install mapper-murmur3

Add a new field with a multi-field using the murmur3 type

PUT foo/_mapping/bar
{
  "properties": {
    "qux": {
      "type": "text",
      "fields": {
        "hash": {
          "type": "murmur3"
        }
      }
    }
  }
}

Index some data in the qux field

POST foo/bar/2
{
  "qux": "Lorem ipsum elastic audio technica glad"
}

Get field stats for this index

GET foo/_field_stats?fields=*&pretty

Note that no object is returned for the qux.hash field

Add a new field with a multi-field using a built-in type

PUT foo/_mapping/bar
{
  "properties": {
    "boop": {
      "type": "text",
      "fields": {
        "raw": {
          "type": "keyword"
        }
      }
    }
  }
}

Index some data in the boop field

POST foo/bar/3
{
  "boop": "Lorem ipsum elastic audio technica glad errand math"
}

Get field stats for this index

GET foo/_field_stats?fields=*&pretty

Note that an object is returned for the boop.raw field

fieldstats-nodata.md

Create an index with a text field

PUT foo
{
  "mappings": {
    "bar": {
      "properties": {
        "baz": {
          "type": "text"
        }
      }
    }
  }
}

Get field stats for this index

GET foo/_field_stats?fields=*&pretty

Note that no object is returned for the baz field as there is no data.

Index some data in the baz field

POST foo/bar/1
{
  "baz": "Lorem ipsum elastic"
}

Get field stats for this index

GET foo/_field_stats?fields=*&pretty

Note that an object is returned for the baz field now that there is data.