[[java-rest-high-x-pack-ml-get-buckets]]
=== Get Buckets API

The Get Buckets API retrieves one or more bucket results.
It accepts a `GetBucketsRequest` object and responds
with a `GetBucketsResponse` object.

[[java-rest-high-x-pack-ml-get-buckets-request]]
==== Get Buckets Request

A `GetBucketsRequest` object gets created with an existing non-null `jobId`.

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-request]
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<1> Constructing a new request referencing an existing `jobId`

==== Optional Arguments
The following arguments are optional:

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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-timestamp]
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<1> The timestamp of the bucket to get. Otherwise it will return all buckets.

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-anomaly-score]
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<1> Buckets with anomaly scores greater or equal than this value will be returned.

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-desc]
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<1> If `true`, the buckets are sorted in descending order. Defaults to `false`.

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-end]
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<1> Buckets with timestamps earlier than this time will be returned.

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-exclude-interim]
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<1> If `true`, interim results will be excluded. Defaults to `false`.

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-expand]
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<1> If `true`, buckets will include their anomaly records. Defaults to `false`.

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-page]
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<1> The page parameters `from` and `size`. `from` specifies the number of buckets to skip.
`size` specifies the maximum number of buckets to get. Defaults to `0` and `100` respectively.

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-sort]
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<1> The field to sort buckets on. Defaults to `timestamp`.

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-start]
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<1> Buckets with timestamps on or after this time will be returned.

[[java-rest-high-x-pack-ml-get-buckets-execution]]
==== Execution

The request can be executed through the `MachineLearningClient` contained
in the `RestHighLevelClient` object, accessed via the `machineLearningClient()` method.

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-execute]
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[[java-rest-high-x-pack-ml-get-buckets-execution-async]]
==== Asynchronous Execution

The request can also be executed asynchronously:

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-execute-async]
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<1> The `GetBucketsRequest` to execute and the `ActionListener` to use when
the execution completes

The asynchronous method does not block and returns immediately. Once it is
completed the `ActionListener` is called back with the `onResponse` method
if the execution is successful or the `onFailure` method if the execution
failed.

A typical listener for `GetBucketsResponse` looks like:

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-listener]
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<1> `onResponse` is called back when the action is completed successfully
<2> `onFailure` is called back when some unexpected error occurs

[[java-rest-high-snapshot-ml-get-buckets-response]]
==== Get Buckets Response

The returned `GetBucketsResponse` contains the requested buckets:

["source","java",subs="attributes,callouts,macros"]
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include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-response]
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<1> The count of buckets that were matched
<2> The buckets retrieved