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Elasticsearch Guide [7.7] » REST APIs » Machine learning anomaly detection APIs » Get datafeed statistics API
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Get datafeed statistics APIedit

Retrieves usage information for datafeeds.

Requestedit

GET _ml/datafeeds/<feed_id>/_stats

GET _ml/datafeeds/<feed_id>,<feed_id>/_stats

GET _ml/datafeeds/_stats

GET _ml/datafeeds/_all/_stats

Prerequisitesedit

  • If the Elasticsearch security features are enabled, you must have monitor_ml, monitor, manage_ml, or manage cluster privileges to use this API. See Security privileges.

Descriptionedit

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

If the datafeed is stopped, the only information you receive is the datafeed_id and the state.

This API returns a maximum of 10,000 datafeeds.

Path parametersedit

<feed_id>

(Optional, string) Identifier for the datafeed. It can be a datafeed identifier or a wildcard expression.

If you do not specify one of these options, the API returns information about all datafeeds.

Query parametersedit

allow_no_datafeeds

(Optional, boolean) Specifies what to do when the request:

  • Contains wildcard expressions and there are no datafeeds that match.
  • Contains the _all string or no identifiers and there are no matches.
  • Contains wildcard expressions and there are only partial matches.

The default value is true, which returns an empty datafeeds array when there are no matches and the subset of results when there are partial matches. If this parameter is false, the request returns a 404 status code when there are no matches or only partial matches.

Response bodyedit

The API returns an array of datafeed count objects. All of these properties are informational; you cannot update their values.

assignment_explanation
(string) For started datafeeds only, contains messages relating to the selection of a node.
datafeed_id
(string) A numerical character string that uniquely identifies the datafeed. This identifier can contain lowercase alphanumeric characters (a-z and 0-9), hyphens, and underscores. It must start and end with alphanumeric characters.
node

(object) For started datafeeds only, this information pertains to the node upon which the datafeed is started.

Details
attributes
(object) Lists node attributes such as ml.machine_memory or ml.max_open_jobs settings.
ephemeral_id
(string) The ephemeral ID of the node.
id
(string) The unique identifier of the node.
name
(string) The node name. For example, 0-o0tOo.
transport_address
(string) The host and port where transport HTTP connections are accepted.
state

(string) The status of the datafeed, which can be one of the following values:

  • starting: The datafeed has been requested to start but has not yet started.
  • started: The datafeed is actively receiving data.
  • stopping: The datafeed has been requested to stop gracefully and is completing its final action.
  • stopped: The datafeed is stopped and will not receive data until it is re-started.
timing_stats

(object) An object that provides statistical information about timing aspect of this datafeed.

Details
average_search_time_per_bucket_ms
(double) The average search time per bucket, in milliseconds.
bucket_count
(long) The number of buckets processed.
exponential_average_search_time_per_hour_ms
(double) The exponential average search time per hour, in milliseconds.
job_id
Identifier for the anomaly detection job.
search_count
The number of searches run by the datafeed.
total_search_time_ms
The total time the datafeed spent searching, in milliseconds.

Response codesedit

404 (Missing resources)
If allow_no_datafeeds is false, this code indicates that there are no resources that match the request or only partial matches for the request.

Examplesedit 

GET _ml/datafeeds/datafeed-high_sum_total_sales/_stats

The API returns the following results:

{
  "count": 1,
  "datafeeds": [
    {
      "datafeed_id": "datafeed-high_sum_total_sales",
      "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"
        }
      },
      "assignment_explanation": "",
      "timing_stats": {
        "job_id" : "high_sum_total_sales",
         "search_count" : 27,
         "bucket_count" : 619,
         "total_search_time_ms" : 296.0,
         "average_search_time_per_bucket_ms" : 0.4781906300484653,
         "exponential_average_search_time_per_hour_ms" : 33.28246548059884
      }
    }
  ]
}
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