[role="xpack"]
[testenv="basic"]
[[get-data-frame-transform-stats]]
=== Get {dataframe-transform} statistics API

[subs="attributes"]
++++
<titleabbrev>Get {dataframe-transform} statistics</titleabbrev>
++++

beta[]

Retrieves usage information for {dataframe-transforms}.

[discrete]
[[get-data-frame-transform-stats-request]]
==== {api-request-title}


`GET _data_frame/transforms/<data_frame_transform_id>/_stats`

`GET _data_frame/transforms/<data_frame_transform_id>,<data_frame_transform_id>/_stats` +

`GET _data_frame/transforms/_stats` +

`GET _data_frame/transforms/_all/_stats` +

`GET _data_frame/transforms/*/_stats` +

[discrete]
[[get-data-frame-transform-stats-prereqs]]
==== {api-prereq-title}

* If the {es} {security-features} are enabled, you must have
`monitor_data_frame_transforms` cluster privileges to use this API. The built-in
`data_frame_transforms_user` role has these privileges. For more information,
see {stack-ov}/security-privileges.html[Security privileges] and
{stack-ov}/built-in-roles.html[Built-in roles].

[discrete]
[[get-data-frame-transform-stats-desc]]
==== {api-description-title}

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

[discrete]
[[get-data-frame-transform-stats-path-parms]]
==== {api-path-parms-title}

`<data_frame_transform_id>` (Optional)::
  (string) Identifier for the {dataframe-transform}. It can be a
  {dataframe-transform} identifier or a wildcard expression. If you do not
  specify one of these options, the API returns information for all
  {dataframe-transforms}.
  
[discrete]
[[get-data-frame-transform-stats-query-parms]]
==== {api-query-parms-title}

`allow_no_match` (Optional)::
  (boolean) Specifies what to do when the request:
+
--
* Contains wildcard expressions and there are no {dataframe-transforms} 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 `transforms` 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.
--

`from` (Optional)::
  (integer) Skips the specified number of {dataframe-transforms}. The
  default value is `0`.

`size` (Optional)::
  (integer) Specifies the maximum number of {dataframe-transforms} to obtain.
  The default value is `100`.

[discrete]
[[get-data-frame-transform-stats-response]]
==== {api-response-body-title}

`transforms`::
  (array) An array of statistics objects for {dataframe-transforms}, which are
  sorted by the `id` value in ascending order.
  
[[get-data-frame-transform-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. 

[discrete]
[[get-data-frame-transform-stats-example]]
==== Examples

The following example skips for the first five {dataframe-transforms} and
gets usage information for a maximum of ten results: 

[source,js]
--------------------------------------------------
GET _data_frame/transforms/_stats?from=5&size=10
--------------------------------------------------
// CONSOLE
// TEST[skip:todo]

The following example gets usage information for the `ecommerce_transform`
{dataframe-transform}:

[source,js]
--------------------------------------------------
GET _data_frame/transforms/ecommerce_transform/_stats
--------------------------------------------------
// CONSOLE
// TEST[skip:todo]

The API returns the following results:
[source,js]
----
{
  "count" : 1,
  "transforms" : [
    {
      "id" : "ecommerce_transform",
      "state" : {
        "task_state" : "started",
        "indexer_state" : "started",
        "checkpoint" : 1,
        "progress" : {
          "total_docs" : 1220,
          "docs_remaining" : 0,
          "percent_complete" : 100.0
        }
      },
      "stats" : {
        "pages_processed" : 2,
        "documents_processed" : 1220,
        "documents_indexed" : 13,
        "trigger_count" : 1,
        "index_time_in_ms" : 19,
        "index_total" : 1,
        "index_failures" : 0,
        "search_time_in_ms" : 52,
        "search_total" : 2,
        "search_failures" : 0
      },
      "checkpointing" : {
        "current" : {
          "timestamp_millis" : 1557474786393
        },
        "operations_behind" : 0
      }
    }
  ]
}
----
// TESTRESPONSE