You're viewing version 2.3 of the OpenSearch documentation. This version is no longer maintained. For the latest version, see the current documentation. For information about OpenSearch version maintenance, see Release Schedule and Maintenance Policy.
CAT fielddata
Introduced 1.0
The CAT fielddata operation lists the memory size used by each field per node.
Example
GET _cat/fielddata?v
To limit the information to a specific field, add the field name after your query:
GET _cat/fielddata/<field_name>?v
If you want to get information for more than one field, separate the field names with commas:
GET _cat/fielddata/field_name_1,field_name_2,field_name_3
Path and HTTP methods
GET _cat/fielddata?v
GET _cat/fielddata/<field_name>?v
URL parameters
All CAT fielddata URL parameters are optional.
In addition to the common URL parameters, you can specify the following parameter:
| Parameter | Type | Description |
|---|---|---|
| bytes | Byte size | Specify the units for byte size. For example, 7kb or 6gb. For more information, see Supported units. |
Response
The following response shows the memory size for all fields as 284 bytes:
id host ip node field size
1vo54NuxSxOrbPEYdkSF0w 172.18.0.4 172.18.0.4 odfe-node1 _id 284b
ZaIkkUd4TEiAihqJGkp5CA 172.18.0.3 172.18.0.3 odfe-node2 _id 284b