Returns the amount of heap memory currently used by the field data cache on every data node in the cluster

GET /_cat/fielddata/{fields}

IMPORTANT: cat APIs are only intended for human consumption using the command line or Kibana console. They are not intended for use by applications. For application consumption, use the nodes stats API.

Path parameters

fields string | array[string] Required

Comma-separated list of fields used to limit returned information. To retrieve all fields, omit this parameter.

Query parameters

bytes string

The unit used to display byte values.

Values are b, kb, mb, gb, tb, or pb.
fields string | array[string]

Comma-separated list of fields used to limit returned information.

Responses

200 application/json
Hide response attributes Show response attributes object
- id string
  
  node id
- host string
  
  host name
- ip string
  
  ip address
- node string
  
  node name
- field string
  
  field name
- size string
  
  field data usage

GET /_cat/fielddata/{fields}

curl \
 -X GET http://api.example.com/_cat/fielddata/{fields}

Response examples (200)

[
  {
    "id": "string",
    "host": "string",
    "ip": "string",
    "node": "string",
    "field": "string",
    "size": "string"
  }
]