[role="xpack"]
[[ml-get-job-model-snapshot-upgrade-stats]]
= Get {anomaly-job} model snapshot upgrade statistics API

[subs="attributes"]
++++
<titleabbrev>Get model snapshot upgrade statistics</titleabbrev>
++++

Retrieves usage information for {anomaly-job} model snapshot upgrades.

[[ml-get-job-model-snapshot-upgrade-stats-request]]
== {api-request-title}

`GET _ml/anomaly_detectors/<job_id>/model_snapshots/<snapshot_id>/_upgrade/_stats` +

`GET _ml/anomaly_detectors/<job_id>,<job_id>/model_snapshots/_all/_upgrade/_stats` +

`GET _ml/anomaly_detectors/_all/model_snapshots/_all/_upgrade/_stats`

[[ml-get-job-model-snapshot-upgrade-stats-prereqs]]
== {api-prereq-title}

Requires the `monitor_ml` cluster privilege. This privilege is included in the
`machine_learning_user` built-in role.

[[ml-get-job-model-snapshot-upgrade-stats-desc]]
== {api-description-title}

{anomaly-detect-cap} job model snapshot upgrades are ephemeral. Only
upgrades that are in progress at the time this API is called will be
returned.

[[ml-get-job-model-snapshot-upgrade-stats-path-parms]]
== {api-path-parms-title}

`<job_id>`::
(string)
include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=job-id-anomaly-detection-wildcard]

`<snapshot_id>`::
(string)
Identifier for the model snapshot.
+
You can get statistics for multiple {anomaly-job} model snapshot upgrades in a
single API request by using a comma-separated list of snapshot IDs. You can also
use wildcard expressions or `_all`.

[[ml-get-job-model-snapshot-upgrade-stats-query-parms]]
== {api-query-parms-title}

`allow_no_match`::
(Optional, Boolean)
include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=allow-no-match-jobs]

[role="child_attributes"]
[[ml-get-job-model-snapshot-upgrade-stats-results]]
== {api-response-body-title}

The API returns an array of {anomaly-job} model snapshot upgrade status objects.
All of these properties are informational; you cannot update their values.

`assignment_explanation`::
(string)
include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=assignment-explanation-datafeeds]

`job_id`::
(string)
include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=job-id-anomaly-detection]

`node`::
(object)
Contains properties for the node that runs the upgrade task. This information is
available only for upgrade tasks that are assigned to a node.
+
--
[%collapsible%open]
====
`attributes`:::
(object)
include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=node-attributes]

`ephemeral_id`:::
(string)
include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=node-ephemeral-id]

`id`:::
(string)
include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=node-id]

`name`:::
(string)
The node name. For example, `0-o0tOo`.

`transport_address`:::
(string)
include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=node-transport-address]
====
--

`snapshot_id`::
(string)
include::{es-repo-dir}/ml/ml-shared.asciidoc[tag=model-snapshot-id]

`state`::
(string)
One of `loading_old_state`, `saving_new_state`, `stopped` or `failed`.


[[ml-get-job-model-snapshot-upgrade-stats-response-codes]]
== {api-response-codes-title}

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

[[ml-get-job-model-snapshot-upgrade-stats-example]]
== {api-examples-title}

[source,console]
--------------------------------------------------
GET _ml/anomaly_detectors/low_request_rate/model_snapshots/_all/_upgrade/_stats
--------------------------------------------------
// TEST[skip:it will be too difficult to get a reliable response in docs tests]

The API returns the following results:

[source,console-result]
----
{
  "count" : 1,
  "model_snapshot_upgrades" : [
    {
      "job_id" : "low_request_rate",
      "snapshot_id" : "1828371",
      "state" : "saving_new_state",
      "node" : {
        "id" : "7bmMXyWCRs-TuPfGJJ_yMw",
        "name" : "node-0",
        "ephemeral_id" : "hoXMLZB0RWKfR9UPPUCxXX",
        "transport_address" : "127.0.0.1:9300",
        "attributes" : {
          "ml.machine_memory" : "17179869184",
          "ml.max_open_jobs" : "512"
        }
      },
      "assignment_explanation" : ""
    }
  ]
}
----
// TESTRESPONSE[s/"7bmMXyWCRs-TuPfGJJ_yMw"/$body.$_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/]