OpenSearch/docs/reference/ml/anomaly-detection/apis/get-snapshot.asciidoc

[role="xpack"]
[testenv="platinum"]
[[ml-get-snapshot]]
=== Get model snapshots API
++++
<titleabbrev>Get model snapshots</titleabbrev>
++++

Retrieves information about model snapshots.

[[ml-get-snapshot-request]]
==== {api-request-title}

`GET _ml/anomaly_detectors/<job_id>/model_snapshots` +

`GET _ml/anomaly_detectors/<job_id>/model_snapshots/<snapshot_id>`

[[ml-get-snapshot-prereqs]]
==== {api-prereq-title}

* If the {es} {security-features} are enabled, you must have `monitor_ml`,
`monitor`, `manage_ml`, or `manage` cluster privileges to use this API. See
<<security-privileges>>.

[[ml-get-snapshot-path-parms]]
==== {api-path-parms-title}

`<job_id>`::
  (Required, string) Identifier for the {anomaly-job}.

`<snapshot_id>`::
  (Optional, string) Identifier for the model snapshot. If you do not specify
  this optional parameter, the API returns information about all model snapshots.

[[ml-get-snapshot-request-body]]
==== {api-request-body-title}

`desc`::
  (Optional, boolean) If true, the results are sorted in descending order.

`end`::
  (Optional, date) Returns snapshots with timestamps earlier than this time.

`from`::
  (Optional, integer) Skips the specified number of snapshots.

`size`::
  (Optional, integer) Specifies the maximum number of snapshots to obtain.

`sort`::
  (Optional, string) Specifies the sort field for the requested snapshots. By
  default, the snapshots are sorted by their timestamp.

`start`::
  (Optional, string) Returns snapshots with timestamps after this time.

[[ml-get-snapshot-results]]
==== {api-response-body-title}

The API returns the following information:

`model_snapshots`::
  (array) An array of model snapshot objects. For more information, see
  <<ml-snapshot-resource>>.

[[ml-get-snapshot-example]]
==== {api-examples-title}

[source,console]
--------------------------------------------------
GET _ml/anomaly_detectors/farequote/model_snapshots
{
  "start": "1491852977000"
}
--------------------------------------------------
// TEST[skip:todo]

In this example, the API provides a single result:
[source,js]
----
{
  "count": 1,
  "model_snapshots": [
    {
      "job_id": "farequote",
      "min_version": "6.3.0",
      "timestamp": 1491948163000,
      "description": "State persisted due to job close at 2017-04-11T15:02:43-0700",
      "snapshot_id": "1491948163",
      "snapshot_doc_count": 1,
      "model_size_stats": {
        "job_id": "farequote",
        "result_type": "model_size_stats",
        "model_bytes": 387594,
        "total_by_field_count": 21,
        "total_over_field_count": 0,
        "total_partition_field_count": 20,
        "bucket_allocation_failures_count": 0,
        "memory_status": "ok",
        "log_time": 1491948163000,
        "timestamp": 1455234600000
      },
      "latest_record_time_stamp": 1455235196000,
      "latest_result_time_stamp": 1455234900000,
      "retain": false
    }
  ]
}
----