OpenSearch/docs/java-rest/high-level/ml/start-data-frame-analytics.asciidoc
David Roberts da5aeb8be7
[ML] Return assigned node in start/open job/datafeed response (#55570)
Adds a "node" field to the response from the following endpoints:

1. Open anomaly detection job
2. Start datafeed
3. Start data frame analytics job

If the job or datafeed is assigned to a node immediately then
this field will return the ID of that node.

In the case where a job or datafeed is opened or started lazily
the node field will contain an empty string.  Clients that want
to test whether a job or datafeed was opened or started lazily
can therefore check for this.

Backport of #55473
2020-04-22 12:06:53 +01:00

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--
:api: start-data-frame-analytics
:request: StartDataFrameAnalyticsRequest
:response: AcknowledgedResponse
--
[role="xpack"]
[id="{upid}-{api}"]
=== Start {dfanalytics-jobs} API
Starts an existing {dfanalytics-job}.
It accepts a +{request}+ object and responds with a +{response}+ object.
[id="{upid}-{api}-request"]
==== Start {dfanalytics-job} request
A +{request}+ object requires a {dfanalytics-job} ID.
["source","java",subs="attributes,callouts,macros"]
---------------------------------------------------
include-tagged::{doc-tests-file}[{api}-request]
---------------------------------------------------
<1> Constructing a new start request referencing an existing {dfanalytics-job}
include::../execution.asciidoc[]
[id="{upid}-{api}-response"]
==== Start {dfanalytics-job} response
The returned +{response}+ object acknowledges the {dfanalytics-job} has started.
["source","java",subs="attributes,callouts,macros"]
--------------------------------------------------
include-tagged::{doc-tests-file}[{api}-response]
--------------------------------------------------
<1> `getNode()` returns the node that the job was assigned to. If the
job is allowed to open lazily and has not yet been assigned to a node
then an empty string is returned. If `getNode()` returns `null` then
the server is an old version that does not return node information.