elasticsearch/x-pack/docs/en/rest-api/ml/get-datafeed-stats.asciidoc

[role="xpack"]
[[ml-get-datafeed-stats]]
=== Get {dfeed-cap} Statistics API
++++
<titleabbrev>Get {dfeed-cap} Statistics</titleabbrev>
++++

Retrieves usage information for {dfeeds}.


==== Request


`GET _xpack/ml/datafeeds/<feed_id>/_stats` +

`GET _xpack/ml/datafeeds/<feed_id>,<feed_id>/_stats` +

`GET _xpack/ml/datafeeds/_stats`  +

`GET _xpack/ml/datafeeds/_all/_stats` +



==== Description

You can get statistics for multiple {dfeeds} in a single API request by using a
comma-separated list of {dfeeds} or a wildcard expression. You can get
statistics for all {dfeeds} by using `_all`, by specifying `*` as the
`<feed_id>`, or by omitting the `<feed_id>`.

If the {dfeed} is stopped, the only information you receive is the
`datafeed_id` and the `state`.


==== Path Parameters

`feed_id`::
  (string) Identifier for the {dfeed}. It can be a {dfeed} identifier or a
  wildcard expression. If you do not specify one of these options, the API
  returns statistics for all {dfeeds}.


==== Results

The API returns the following information:

`datafeeds`::
  (array) An array of {dfeed} count objects.
  For more information, see <<ml-datafeed-counts>>.


==== Authorization

You must have `monitor_ml`, `monitor`, `manage_ml`, or `manage` cluster
privileges to use this API. For more information, see
{xpack-ref}/security-privileges.html[Security Privileges].


==== Examples

The following example gets usage information for the
`datafeed-total-requests` {dfeed}:

[source,js]
--------------------------------------------------
GET _xpack/ml/datafeeds/datafeed-total-requests/_stats
--------------------------------------------------
// CONSOLE
// TEST[setup:server_metrics_startdf]

The API returns the following results:
[source,js]
----
{
  "count": 1,
  "datafeeds": [
    {
      "datafeed_id": "datafeed-total-requests",
      "state": "started",
      "node": {
        "id": "2spCyo1pRi2Ajo-j-_dnPX",
        "name": "node-0",
        "ephemeral_id": "hoXMLZB0RWKfR9UPPUCxXX",
        "transport_address": "127.0.0.1:9300",
        "attributes": {
          "ml.machine_memory": "17179869184",
          "ml.max_open_jobs": "20",
          "ml.enabled": "true"
        }
      },
      "assignment_explanation": ""
    }
  ]
}
----
// TESTRESPONSE[s/"2spCyo1pRi2Ajo-j-_dnPX"/$body.$_path/]
// TESTRESPONSE[s/"node-0"/$body.$_path/]
// TESTRESPONSE[s/"hoXMLZB0RWKfR9UPPUCxXX"/$body.$_path/]
// TESTRESPONSE[s/"127.0.0.1:9300"/$body.$_path/]
// TESTRESPONSE[s/"17179869184"/$body.datafeeds.0.node.attributes.ml\\.machine_memory/]