CAT Field Data
Introduced 1.0
The CAT Field Data operation lists the memory size used by each field per node.
Endpoints
GET /_cat/fielddata
GET /_cat/fielddata/{fields}
Query parameters
The following table lists the available query parameters. All query parameters are optional.
| Parameter | Data type | Description | Default |
|---|---|---|---|
bytes | String | The units used to display byte values. Valid values are: b, kb, k, mb, m, gb, g, tb, t, pb, p | N/A |
format | String | A short version of the Accept header, such as json or yaml. | N/A |
h | List | A comma-separated list of column names to display. | N/A |
help | Boolean | Returns help information. | false |
s | List | A comma-separated list of column names or column aliases to sort by. | N/A |
v | Boolean | Enables verbose mode, which displays column headers. | false |
Example requests
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
Example 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