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| layout | title | parent | nav_order | has_children |
|---|---|---|---|---|
| default | CAT field data | CAT API | 15 | false |
CAT fielddata
Introduced 1.0 {: .label .label-purple }
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/aliases/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