HLRC: Add ML get overall buckets API (#33297)

Relates #29827

client/rest-high-level/src/main/java/org/elasticsearch/client/MLRequestConverters.java

@@ -26,14 +26,15 @@ import org.apache.http.client.methods.HttpPut;
 import org.elasticsearch.client.RequestConverters.EndpointBuilder;
 import org.elasticsearch.client.ml.CloseJobRequest;
 import org.elasticsearch.client.ml.DeleteJobRequest;
+import org.elasticsearch.client.ml.FlushJobRequest;
 import org.elasticsearch.client.ml.GetBucketsRequest;
 import org.elasticsearch.client.ml.GetJobRequest;
 import org.elasticsearch.client.ml.GetJobStatsRequest;
+import org.elasticsearch.client.ml.GetOverallBucketsRequest;
 import org.elasticsearch.client.ml.GetRecordsRequest;
 import org.elasticsearch.client.ml.OpenJobRequest;
 import org.elasticsearch.client.ml.PutJobRequest;
 import org.elasticsearch.common.Strings;
-import org.elasticsearch.client.ml.FlushJobRequest;
 
 import java.io.IOException;
 
@@ -73,6 +74,23 @@ final class MLRequestConverters {
         return request;
     }
 
+    static Request getJobStats(GetJobStatsRequest getJobStatsRequest) {
+        String endpoint = new EndpointBuilder()
+                .addPathPartAsIs("_xpack")
+                .addPathPartAsIs("ml")
+                .addPathPartAsIs("anomaly_detectors")
+                .addPathPart(Strings.collectionToCommaDelimitedString(getJobStatsRequest.getJobIds()))
+                .addPathPartAsIs("_stats")
+                .build();
+        Request request = new Request(HttpGet.METHOD_NAME, endpoint);
+
+        RequestConverters.Params params = new RequestConverters.Params(request);
+        if (getJobStatsRequest.isAllowNoJobs() != null) {
+            params.putParam("allow_no_jobs", Boolean.toString(getJobStatsRequest.isAllowNoJobs()));
+        }
+        return request;
+    }
+
     static Request openJob(OpenJobRequest openJobRequest) throws IOException {
         String endpoint = new EndpointBuilder()
                 .addPathPartAsIs("_xpack")
@@ -114,6 +132,19 @@ final class MLRequestConverters {
         return request;
     }
 
+    static Request flushJob(FlushJobRequest flushJobRequest) throws IOException {
+        String endpoint = new EndpointBuilder()
+                .addPathPartAsIs("_xpack")
+                .addPathPartAsIs("ml")
+                .addPathPartAsIs("anomaly_detectors")
+                .addPathPart(flushJobRequest.getJobId())
+                .addPathPartAsIs("_flush")
+                .build();
+        Request request = new Request(HttpPost.METHOD_NAME, endpoint);
+        request.setEntity(createEntity(flushJobRequest, REQUEST_BODY_CONTENT_TYPE));
+        return request;
+    }
+
     static Request getBuckets(GetBucketsRequest getBucketsRequest) throws IOException {
         String endpoint = new EndpointBuilder()
                 .addPathPartAsIs("_xpack")
@@ -128,33 +159,17 @@ final class MLRequestConverters {
         return request;
     }
 
-    static Request flushJob(FlushJobRequest flushJobRequest) throws IOException {
-        String endpoint = new EndpointBuilder()
-            .addPathPartAsIs("_xpack")
-            .addPathPartAsIs("ml")
-            .addPathPartAsIs("anomaly_detectors")
-            .addPathPart(flushJobRequest.getJobId())
-            .addPathPartAsIs("_flush")
-            .build();
-        Request request = new Request(HttpPost.METHOD_NAME, endpoint);
-        request.setEntity(createEntity(flushJobRequest, REQUEST_BODY_CONTENT_TYPE));
-        return request;
-    }
-
-    static Request getJobStats(GetJobStatsRequest getJobStatsRequest) {
+    static Request getOverallBuckets(GetOverallBucketsRequest getOverallBucketsRequest) throws IOException {
         String endpoint = new EndpointBuilder()
-            .addPathPartAsIs("_xpack")
-            .addPathPartAsIs("ml")
-            .addPathPartAsIs("anomaly_detectors")
-            .addPathPart(Strings.collectionToCommaDelimitedString(getJobStatsRequest.getJobIds()))
-            .addPathPartAsIs("_stats")
-            .build();
+                .addPathPartAsIs("_xpack")
+                .addPathPartAsIs("ml")
+                .addPathPartAsIs("anomaly_detectors")
+                .addPathPart(Strings.collectionToCommaDelimitedString(getOverallBucketsRequest.getJobIds()))
+                .addPathPartAsIs("results")
+                .addPathPartAsIs("overall_buckets")
+                .build();
         Request request = new Request(HttpGet.METHOD_NAME, endpoint);
-
-        RequestConverters.Params params = new RequestConverters.Params(request);
-        if (getJobStatsRequest.isAllowNoJobs() != null) {
-            params.putParam("allow_no_jobs", Boolean.toString(getJobStatsRequest.isAllowNoJobs()));
-        }
+        request.setEntity(createEntity(getOverallBucketsRequest, REQUEST_BODY_CONTENT_TYPE));
         return request;
     }
 

client/rest-high-level/src/main/java/org/elasticsearch/client/MachineLearningClient.java

@@ -32,6 +32,8 @@ import org.elasticsearch.client.ml.GetBucketsRequest;
 import org.elasticsearch.client.ml.GetBucketsResponse;
 import org.elasticsearch.client.ml.GetJobRequest;
 import org.elasticsearch.client.ml.GetJobResponse;
+import org.elasticsearch.client.ml.GetOverallBucketsRequest;
+import org.elasticsearch.client.ml.GetOverallBucketsResponse;
 import org.elasticsearch.client.ml.GetRecordsRequest;
 import org.elasticsearch.client.ml.GetRecordsResponse;
 import org.elasticsearch.client.ml.OpenJobRequest;
@@ -136,6 +138,47 @@ public final class MachineLearningClient {
             Collections.emptySet());
     }
 
+    /**
+     * Gets usage statistics for one or more Machine Learning jobs
+     *
+     * <p>
+     *     For additional info
+     *     see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/ml-get-job-stats.html">Get Job stats docs</a>
+     * </p>
+     * @param request {@link GetJobStatsRequest} Request containing a list of jobId(s) and additional options
+     * @param options  Additional request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
+     * @return {@link GetJobStatsResponse} response object containing
+     * the {@link JobStats} objects and the number of jobs found
+     * @throws IOException when there is a serialization issue sending the request or receiving the response
+     */
+    public GetJobStatsResponse getJobStats(GetJobStatsRequest request, RequestOptions options) throws IOException {
+        return restHighLevelClient.performRequestAndParseEntity(request,
+                MLRequestConverters::getJobStats,
+                options,
+                GetJobStatsResponse::fromXContent,
+                Collections.emptySet());
+    }
+
+    /**
+     * Gets one or more Machine Learning job configuration info, asynchronously.
+     *
+     * <p>
+     *     For additional info
+     *     see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/ml-get-job-stats.html">Get Job stats docs</a>
+     * </p>
+     * @param request {@link GetJobStatsRequest} Request containing a list of jobId(s) and additional options
+     * @param options  Additional request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
+     * @param listener Listener to be notified with {@link GetJobStatsResponse} upon request completion
+     */
+    public void getJobStatsAsync(GetJobStatsRequest request, RequestOptions options, ActionListener<GetJobStatsResponse> listener) {
+        restHighLevelClient.performRequestAsyncAndParseEntity(request,
+                MLRequestConverters::getJobStats,
+                options,
+                GetJobStatsResponse::fromXContent,
+                listener,
+                Collections.emptySet());
+    }
+
     /**
      * Deletes the given Machine Learning Job
      * <p>
@@ -257,42 +300,6 @@ public final class MachineLearningClient {
             Collections.emptySet());
     }
 
-    /**
-     * Gets the buckets for a Machine Learning Job.
-     * <p>
-     * For additional info
-     * see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/ml-get-bucket.html">ML GET buckets documentation</a>
-     *
-     * @param request  The request
-     * @param options  Additional request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
-     */
-    public GetBucketsResponse getBuckets(GetBucketsRequest request, RequestOptions options) throws IOException {
-        return restHighLevelClient.performRequestAndParseEntity(request,
-                MLRequestConverters::getBuckets,
-                options,
-                GetBucketsResponse::fromXContent,
-                Collections.emptySet());
-    }
-
-    /**
-     * Gets the buckets for a Machine Learning Job, notifies listener once the requested buckets are retrieved.
-     * <p>
-     * For additional info
-     * see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/ml-get-bucket.html">ML GET buckets documentation</a>
-     *
-     * @param request  The request
-     * @param options  Additional request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
-     * @param listener Listener to be notified upon request completion
-     */
-    public void getBucketsAsync(GetBucketsRequest request, RequestOptions options, ActionListener<GetBucketsResponse> listener) {
-        restHighLevelClient.performRequestAsyncAndParseEntity(request,
-                MLRequestConverters::getBuckets,
-                options,
-                GetBucketsResponse::fromXContent,
-                listener,
-                Collections.emptySet());
-     }
-
     /**
      * Flushes internally buffered data for the given Machine Learning Job ensuring all data sent to the has been processed.
      * This may cause new results to be calculated depending on the contents of the buffer
@@ -311,13 +318,13 @@ public final class MachineLearningClient {
      * @param request  The {@link FlushJobRequest} object enclosing the `jobId` and additional request options
      * @param options  Additional request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
      */
-     public FlushJobResponse flushJob(FlushJobRequest request, RequestOptions options) throws IOException {
+    public FlushJobResponse flushJob(FlushJobRequest request, RequestOptions options) throws IOException {
         return restHighLevelClient.performRequestAndParseEntity(request,
-            MLRequestConverters::flushJob,
-            options,
-            FlushJobResponse::fromXContent,
-            Collections.emptySet());
-     }
+                MLRequestConverters::flushJob,
+                options,
+                FlushJobResponse::fromXContent,
+                Collections.emptySet());
+    }
 
     /**
      * Flushes internally buffered data for the given Machine Learning Job asynchronously ensuring all data sent to the has been processed.
@@ -338,54 +345,88 @@ public final class MachineLearningClient {
      * @param options  Additional request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
      * @param listener Listener to be notified upon request completion
      */
-     public void flushJobAsync(FlushJobRequest request, RequestOptions options, ActionListener<FlushJobResponse> listener) {
-         restHighLevelClient.performRequestAsyncAndParseEntity(request,
-             MLRequestConverters::flushJob,
-             options,
-             FlushJobResponse::fromXContent,
-             listener,
-             Collections.emptySet());
-     }
+    public void flushJobAsync(FlushJobRequest request, RequestOptions options, ActionListener<FlushJobResponse> listener) {
+        restHighLevelClient.performRequestAsyncAndParseEntity(request,
+                MLRequestConverters::flushJob,
+                options,
+                FlushJobResponse::fromXContent,
+                listener,
+                Collections.emptySet());
+    }
 
-     /**
-     * Gets usage statistics for one or more Machine Learning jobs
-     *
+    /**
+     * Gets the buckets for a Machine Learning Job.
      * <p>
-     *     For additional info
-     *     see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/ml-get-job-stats.html">Get Job stats docs</a>
-     * </p>
-     * @param request {@link GetJobStatsRequest} Request containing a list of jobId(s) and additional options
+     * For additional info
+     * see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/ml-get-bucket.html">ML GET buckets documentation</a>
+     *
+     * @param request  The request
      * @param options  Additional request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
-     * @return {@link GetJobStatsResponse} response object containing
-     * the {@link JobStats} objects and the number of jobs found
-     * @throws IOException when there is a serialization issue sending the request or receiving the response
      */
-    public GetJobStatsResponse getJobStats(GetJobStatsRequest request, RequestOptions options) throws IOException {
+    public GetBucketsResponse getBuckets(GetBucketsRequest request, RequestOptions options) throws IOException {
         return restHighLevelClient.performRequestAndParseEntity(request,
-            MLRequestConverters::getJobStats,
-            options,
-            GetJobStatsResponse::fromXContent,
-            Collections.emptySet());
+                MLRequestConverters::getBuckets,
+                options,
+                GetBucketsResponse::fromXContent,
+                Collections.emptySet());
     }
 
     /**
-     * Gets one or more Machine Learning job configuration info, asynchronously.
+     * Gets the buckets for a Machine Learning Job, notifies listener once the requested buckets are retrieved.
+     * <p>
+     * For additional info
+     * see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/ml-get-bucket.html">ML GET buckets documentation</a>
+     *
+     * @param request  The request
+     * @param options  Additional request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
+     * @param listener Listener to be notified upon request completion
+     */
+    public void getBucketsAsync(GetBucketsRequest request, RequestOptions options, ActionListener<GetBucketsResponse> listener) {
+        restHighLevelClient.performRequestAsyncAndParseEntity(request,
+                MLRequestConverters::getBuckets,
+                options,
+                GetBucketsResponse::fromXContent,
+                listener,
+                Collections.emptySet());
+     }
+
+    /**
+     * Gets overall buckets for a set of Machine Learning Jobs.
+     * <p>
+     * For additional info
+     * see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/ml-get-overall-buckets.html">
+     *     ML GET overall buckets documentation</a>
      *
+     * @param request  The request
+     * @param options  Additional request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
+     */
+    public GetOverallBucketsResponse getOverallBuckets(GetOverallBucketsRequest request, RequestOptions options) throws IOException {
+        return restHighLevelClient.performRequestAndParseEntity(request,
+                MLRequestConverters::getOverallBuckets,
+                options,
+                GetOverallBucketsResponse::fromXContent,
+                Collections.emptySet());
+    }
+
+    /**
+     * Gets overall buckets for a set of Machine Learning Jobs, notifies listener once the requested buckets are retrieved.
      * <p>
-     *     For additional info
-     *     see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/ml-get-job-stats.html">Get Job stats docs</a>
-     * </p>
-     * @param request {@link GetJobStatsRequest} Request containing a list of jobId(s) and additional options
+     * For additional info
+     * see <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/ml-get-overall-buckets.html">
+     *     ML GET overall buckets documentation</a>
+     *
+     * @param request  The request
      * @param options  Additional request options (e.g. headers), use {@link RequestOptions#DEFAULT} if nothing needs to be customized
-     * @param listener Listener to be notified with {@link GetJobStatsResponse} upon request completion
+     * @param listener Listener to be notified upon request completion
      */
-    public void getJobStatsAsync(GetJobStatsRequest request, RequestOptions options, ActionListener<GetJobStatsResponse> listener) {
+    public void getOverallBucketsAsync(GetOverallBucketsRequest request, RequestOptions options,
+                                       ActionListener<GetOverallBucketsResponse> listener) {
         restHighLevelClient.performRequestAsyncAndParseEntity(request,
-            MLRequestConverters::getJobStats,
-            options,
-            GetJobStatsResponse::fromXContent,
-            listener,
-            Collections.emptySet());
+                MLRequestConverters::getOverallBuckets,
+                options,
+                GetOverallBucketsResponse::fromXContent,
+                listener,
+                Collections.emptySet());
     }
 
     /**

client/rest-high-level/src/main/java/org/elasticsearch/client/ml/GetOverallBucketsRequest.java

@@ -0,0 +1,266 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.elasticsearch.client.ml;
+
+import org.elasticsearch.action.ActionRequest;
+import org.elasticsearch.action.ActionRequestValidationException;
+import org.elasticsearch.client.ml.job.config.Job;
+import org.elasticsearch.common.ParseField;
+import org.elasticsearch.common.Strings;
+import org.elasticsearch.common.unit.TimeValue;
+import org.elasticsearch.common.xcontent.ConstructingObjectParser;
+import org.elasticsearch.common.xcontent.ToXContentObject;
+import org.elasticsearch.common.xcontent.XContentBuilder;
+
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * A request to retrieve overall buckets of set of jobs
+ */
+public class GetOverallBucketsRequest extends ActionRequest implements ToXContentObject {
+
+    public static final ParseField TOP_N = new ParseField("top_n");
+    public static final ParseField BUCKET_SPAN = new ParseField("bucket_span");
+    public static final ParseField OVERALL_SCORE = new ParseField("overall_score");
+    public static final ParseField EXCLUDE_INTERIM = new ParseField("exclude_interim");
+    public static final ParseField START = new ParseField("start");
+    public static final ParseField END = new ParseField("end");
+    public static final ParseField ALLOW_NO_JOBS = new ParseField("allow_no_jobs");
+
+    private static final String ALL_JOBS = "_all";
+
+    @SuppressWarnings("unchecked")
+    public static final ConstructingObjectParser<GetOverallBucketsRequest, Void> PARSER = new ConstructingObjectParser<>(
+            "get_overall_buckets_request", a -> new GetOverallBucketsRequest((String) a[0]));
+
+    static {
+        PARSER.declareString(ConstructingObjectParser.constructorArg(), Job.ID);
+        PARSER.declareInt(GetOverallBucketsRequest::setTopN, TOP_N);
+        PARSER.declareString(GetOverallBucketsRequest::setBucketSpan, BUCKET_SPAN);
+        PARSER.declareBoolean(GetOverallBucketsRequest::setExcludeInterim, EXCLUDE_INTERIM);
+        PARSER.declareDouble(GetOverallBucketsRequest::setOverallScore, OVERALL_SCORE);
+        PARSER.declareStringOrNull(GetOverallBucketsRequest::setStart, START);
+        PARSER.declareStringOrNull(GetOverallBucketsRequest::setEnd, END);
+        PARSER.declareBoolean(GetOverallBucketsRequest::setAllowNoJobs, ALLOW_NO_JOBS);
+    }
+
+    private final List<String> jobIds;
+    private Integer topN;
+    private TimeValue bucketSpan;
+    private Boolean excludeInterim;
+    private Double overallScore;
+    private String start;
+    private String end;
+    private Boolean allowNoJobs;
+
+    private GetOverallBucketsRequest(String jobId) {
+        this(Strings.tokenizeToStringArray(jobId, ","));
+    }
+
+    /**
+     * Constructs a request to retrieve overall buckets for a set of jobs
+     * @param jobIds The job identifiers. Each can be a job identifier, a group name, or a wildcard expression.
+     */
+    public GetOverallBucketsRequest(String... jobIds) {
+        this(Arrays.asList(jobIds));
+    }
+
+    /**
+     * Constructs a request to retrieve overall buckets for a set of jobs
+     * @param jobIds The job identifiers. Each can be a job identifier, a group name, or a wildcard expression.
+     */
+    public GetOverallBucketsRequest(List<String> jobIds) {
+        if (jobIds.stream().anyMatch(Objects::isNull)) {
+            throw new NullPointerException("jobIds must not contain null values");
+        }
+        if (jobIds.isEmpty()) {
+            this.jobIds = Collections.singletonList(ALL_JOBS);
+        } else {
+            this.jobIds = Collections.unmodifiableList(jobIds);
+        }
+    }
+
+    public List<String> getJobIds() {
+        return jobIds;
+    }
+
+    public Integer getTopN() {
+        return topN;
+    }
+
+    /**
+     * Sets the value of `top_n`.
+     * @param topN The number of top job bucket scores to be used in the overall_score calculation. Defaults to 1.
+     */
+    public void setTopN(Integer topN) {
+        this.topN = topN;
+    }
+
+    public TimeValue getBucketSpan() {
+        return bucketSpan;
+    }
+
+    /**
+     * Sets the value of `bucket_span`.
+     * @param bucketSpan The span of the overall buckets. Must be greater or equal to the largest job’s bucket_span.
+     *                   Defaults to the largest job’s bucket_span.
+     */
+    public void setBucketSpan(TimeValue bucketSpan) {
+        this.bucketSpan = bucketSpan;
+    }
+
+    private void setBucketSpan(String bucketSpan) {
+        this.bucketSpan = TimeValue.parseTimeValue(bucketSpan, BUCKET_SPAN.getPreferredName());
+    }
+
+    public boolean isExcludeInterim() {
+        return excludeInterim;
+    }
+
+    /**
+     * Sets the value of "exclude_interim".
+     * When {@code true}, interim overall buckets will be filtered out.
+     * Overall buckets are interim if any of the job buckets within the overall bucket interval are interim.
+     * @param excludeInterim value of "exclude_interim" to be set
+     */
+    public void setExcludeInterim(Boolean excludeInterim) {
+        this.excludeInterim = excludeInterim;
+    }
+
+    public String getStart() {
+        return start;
+    }
+
+    /**
+     * Sets the value of "start" which is a timestamp.
+     * Only overall buckets whose timestamp is on or after the "start" value will be returned.
+     * @param start value of "start" to be set
+     */
+    public void setStart(String start) {
+        this.start = start;
+    }
+
+    public String getEnd() {
+        return end;
+    }
+
+    /**
+     * Sets the value of "end" which is a timestamp.
+     * Only overall buckets whose timestamp is before the "end" value will be returned.
+     * @param end value of "end" to be set
+     */
+    public void setEnd(String end) {
+        this.end = end;
+    }
+
+    public Double getOverallScore() {
+        return overallScore;
+    }
+
+    /**
+     * Sets the value of "overall_score".
+     * Only buckets with "overall_score" equal or greater will be returned.
+     * @param overallScore value of "anomaly_score".
+     */
+    public void setOverallScore(double overallScore) {
+        this.overallScore = overallScore;
+    }
+
+    /**
+     * See {@link GetJobRequest#isAllowNoJobs()}
+     * @param allowNoJobs
+     */
+    public void setAllowNoJobs(boolean allowNoJobs) {
+        this.allowNoJobs = allowNoJobs;
+    }
+
+    /**
+     * Whether to ignore if a wildcard expression matches no jobs.
+     *
+     * If this is `false`, then an error is returned when a wildcard (or `_all`) does not match any jobs
+     */
+    public Boolean isAllowNoJobs() {
+        return allowNoJobs;
+    }
+
+    @Override
+    public ActionRequestValidationException validate() {
+        return null;
+    }
+
+    @Override
+    public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
+        builder.startObject();
+
+        if (jobIds.isEmpty() == false) {
+            builder.field(Job.ID.getPreferredName(), Strings.collectionToCommaDelimitedString(jobIds));
+        }
+        if (topN != null) {
+            builder.field(TOP_N.getPreferredName(), topN);
+        }
+        if (bucketSpan != null) {
+            builder.field(BUCKET_SPAN.getPreferredName(), bucketSpan.getStringRep());
+        }
+        if (excludeInterim != null) {
+            builder.field(EXCLUDE_INTERIM.getPreferredName(), excludeInterim);
+        }
+        if (start != null) {
+            builder.field(START.getPreferredName(), start);
+        }
+        if (end != null) {
+            builder.field(END.getPreferredName(), end);
+        }
+        if (overallScore != null) {
+            builder.field(OVERALL_SCORE.getPreferredName(), overallScore);
+        }
+        if (allowNoJobs != null) {
+            builder.field(ALLOW_NO_JOBS.getPreferredName(), allowNoJobs);
+        }
+        builder.endObject();
+        return builder;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(jobIds, topN, bucketSpan, excludeInterim, overallScore, start, end, allowNoJobs);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        GetOverallBucketsRequest other = (GetOverallBucketsRequest) obj;
+        return Objects.equals(jobIds, other.jobIds) &&
+                Objects.equals(topN, other.topN) &&
+                Objects.equals(bucketSpan, other.bucketSpan) &&
+                Objects.equals(excludeInterim, other.excludeInterim) &&
+                Objects.equals(overallScore, other.overallScore) &&
+                Objects.equals(start, other.start) &&
+                Objects.equals(end, other.end) &&
+                Objects.equals(allowNoJobs, other.allowNoJobs);
+    }
+}

client/rest-high-level/src/main/java/org/elasticsearch/client/ml/GetOverallBucketsResponse.java

@@ -0,0 +1,78 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.elasticsearch.client.ml;
+
+import org.elasticsearch.client.ml.job.results.OverallBucket;
+import org.elasticsearch.common.ParseField;
+import org.elasticsearch.common.xcontent.ConstructingObjectParser;
+import org.elasticsearch.common.xcontent.XContentParser;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * A response containing the requested overall buckets
+ */
+public class GetOverallBucketsResponse extends AbstractResultResponse<OverallBucket> {
+
+    public static final ParseField OVERALL_BUCKETS = new ParseField("overall_buckets");
+
+    @SuppressWarnings("unchecked")
+    public static final ConstructingObjectParser<GetOverallBucketsResponse, Void> PARSER = new ConstructingObjectParser<>(
+            "get_overall_buckets_response", true, a -> new GetOverallBucketsResponse((List<OverallBucket>) a[0], (long) a[1]));
+
+    static {
+        PARSER.declareObjectArray(ConstructingObjectParser.constructorArg(), OverallBucket.PARSER, OVERALL_BUCKETS);
+        PARSER.declareLong(ConstructingObjectParser.constructorArg(), COUNT);
+    }
+
+    public static GetOverallBucketsResponse fromXContent(XContentParser parser) throws IOException {
+        return PARSER.parse(parser, null);
+    }
+
+    GetOverallBucketsResponse(List<OverallBucket> overallBuckets, long count) {
+        super(OVERALL_BUCKETS, overallBuckets, count);
+    }
+
+    /**
+     * The retrieved overall buckets
+     * @return the retrieved overall buckets
+     */
+    public List<OverallBucket> overallBuckets() {
+        return results;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(count, results);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        GetOverallBucketsResponse other = (GetOverallBucketsResponse) obj;
+        return count == other.count && Objects.equals(results, other.results);
+    }
+}

client/rest-high-level/src/test/java/org/elasticsearch/client/MLRequestConvertersTests.java

@@ -25,8 +25,12 @@ import org.apache.http.client.methods.HttpPost;
 import org.apache.http.client.methods.HttpPut;
 import org.elasticsearch.client.ml.CloseJobRequest;
 import org.elasticsearch.client.ml.DeleteJobRequest;
+import org.elasticsearch.client.ml.FlushJobRequest;
 import org.elasticsearch.client.ml.GetBucketsRequest;
 import org.elasticsearch.client.ml.GetJobRequest;
+import org.elasticsearch.client.ml.GetJobStatsRequest;
+import org.elasticsearch.client.ml.GetOverallBucketsRequest;
+import org.elasticsearch.client.ml.GetRecordsRequest;
 import org.elasticsearch.client.ml.OpenJobRequest;
 import org.elasticsearch.client.ml.PutJobRequest;
 import org.elasticsearch.client.ml.job.config.AnalysisConfig;
@@ -36,8 +40,6 @@ import org.elasticsearch.client.ml.job.util.PageParams;
 import org.elasticsearch.common.unit.TimeValue;
 import org.elasticsearch.common.xcontent.XContentParser;
 import org.elasticsearch.common.xcontent.json.JsonXContent;
-import org.elasticsearch.client.ml.FlushJobRequest;
-import org.elasticsearch.client.ml.GetJobStatsRequest;
 import org.elasticsearch.test.ESTestCase;
 
 import java.io.ByteArrayOutputStream;
@@ -79,6 +81,24 @@ public class MLRequestConvertersTests extends ESTestCase {
         assertEquals(Boolean.toString(true), request.getParameters().get("allow_no_jobs"));
     }
 
+    public void testGetJobStats() {
+        GetJobStatsRequest getJobStatsRequestRequest = new GetJobStatsRequest();
+
+        Request request = MLRequestConverters.getJobStats(getJobStatsRequestRequest);
+
+        assertEquals(HttpGet.METHOD_NAME, request.getMethod());
+        assertEquals("/_xpack/ml/anomaly_detectors/_stats", request.getEndpoint());
+        assertFalse(request.getParameters().containsKey("allow_no_jobs"));
+
+        getJobStatsRequestRequest = new GetJobStatsRequest("job1", "jobs*");
+        getJobStatsRequestRequest.setAllowNoJobs(true);
+        request = MLRequestConverters.getJobStats(getJobStatsRequestRequest);
+
+        assertEquals("/_xpack/ml/anomaly_detectors/job1,jobs*/_stats", request.getEndpoint());
+        assertEquals(Boolean.toString(true), request.getParameters().get("allow_no_jobs"));
+    }
+
+
     public void testOpenJob() throws Exception {
         String jobId = "some-job-id";
         OpenJobRequest openJobRequest = new OpenJobRequest(jobId);
@@ -124,23 +144,6 @@ public class MLRequestConvertersTests extends ESTestCase {
         assertEquals(Boolean.toString(true), request.getParameters().get("force"));
     }
 
-    public void testGetBuckets() throws IOException {
-        String jobId = randomAlphaOfLength(10);
-        GetBucketsRequest getBucketsRequest = new GetBucketsRequest(jobId);
-        getBucketsRequest.setPageParams(new PageParams(100, 300));
-        getBucketsRequest.setAnomalyScore(75.0);
-        getBucketsRequest.setSort("anomaly_score");
-        getBucketsRequest.setDescending(true);
-
-        Request request = MLRequestConverters.getBuckets(getBucketsRequest);
-        assertEquals(HttpGet.METHOD_NAME, request.getMethod());
-        assertEquals("/_xpack/ml/anomaly_detectors/" + jobId + "/results/buckets", request.getEndpoint());
-        try (XContentParser parser = createParser(JsonXContent.jsonXContent, request.getEntity().getContent())) {
-            GetBucketsRequest parsedRequest = GetBucketsRequest.PARSER.apply(parser, null);
-            assertThat(parsedRequest, equalTo(getBucketsRequest));
-        }
-    }
-
     public void testFlushJob() throws Exception {
         String jobId = randomAlphaOfLength(10);
         FlushJobRequest flushJobRequest = new FlushJobRequest(jobId);
@@ -157,26 +160,64 @@ public class MLRequestConvertersTests extends ESTestCase {
         flushJobRequest.setCalcInterim(true);
         request = MLRequestConverters.flushJob(flushJobRequest);
         assertEquals(
-            "{\"job_id\":\"" + jobId + "\",\"calc_interim\":true,\"start\":\"105\"," +
-                "\"end\":\"200\",\"advance_time\":\"100\",\"skip_time\":\"1000\"}",
-            requestEntityToString(request));
+                "{\"job_id\":\"" + jobId + "\",\"calc_interim\":true,\"start\":\"105\"," +
+                        "\"end\":\"200\",\"advance_time\":\"100\",\"skip_time\":\"1000\"}",
+                requestEntityToString(request));
     }
 
-    public void testGetJobStats() {
-        GetJobStatsRequest getJobStatsRequestRequest = new GetJobStatsRequest();
-
-        Request request = MLRequestConverters.getJobStats(getJobStatsRequestRequest);
+    public void testGetBuckets() throws IOException {
+        String jobId = randomAlphaOfLength(10);
+        GetBucketsRequest getBucketsRequest = new GetBucketsRequest(jobId);
+        getBucketsRequest.setPageParams(new PageParams(100, 300));
+        getBucketsRequest.setAnomalyScore(75.0);
+        getBucketsRequest.setSort("anomaly_score");
+        getBucketsRequest.setDescending(true);
 
+        Request request = MLRequestConverters.getBuckets(getBucketsRequest);
         assertEquals(HttpGet.METHOD_NAME, request.getMethod());
-        assertEquals("/_xpack/ml/anomaly_detectors/_stats", request.getEndpoint());
-        assertFalse(request.getParameters().containsKey("allow_no_jobs"));
+        assertEquals("/_xpack/ml/anomaly_detectors/" + jobId + "/results/buckets", request.getEndpoint());
+        try (XContentParser parser = createParser(JsonXContent.jsonXContent, request.getEntity().getContent())) {
+            GetBucketsRequest parsedRequest = GetBucketsRequest.PARSER.apply(parser, null);
+            assertThat(parsedRequest, equalTo(getBucketsRequest));
+        }
+    }
 
-        getJobStatsRequestRequest = new GetJobStatsRequest("job1", "jobs*");
-        getJobStatsRequestRequest.setAllowNoJobs(true);
-        request = MLRequestConverters.getJobStats(getJobStatsRequestRequest);
+    public void testGetOverallBuckets() throws IOException {
+        String jobId = randomAlphaOfLength(10);
+        GetOverallBucketsRequest getOverallBucketsRequest = new GetOverallBucketsRequest(jobId);
+        getOverallBucketsRequest.setBucketSpan(TimeValue.timeValueHours(3));
+        getOverallBucketsRequest.setTopN(3);
+        getOverallBucketsRequest.setStart("2018-08-08T00:00:00Z");
+        getOverallBucketsRequest.setEnd("2018-09-08T00:00:00Z");
+        getOverallBucketsRequest.setExcludeInterim(true);
+
+        Request request = MLRequestConverters.getOverallBuckets(getOverallBucketsRequest);
+        assertEquals(HttpGet.METHOD_NAME, request.getMethod());
+        assertEquals("/_xpack/ml/anomaly_detectors/" + jobId + "/results/overall_buckets", request.getEndpoint());
+        try (XContentParser parser = createParser(JsonXContent.jsonXContent, request.getEntity().getContent())) {
+            GetOverallBucketsRequest parsedRequest = GetOverallBucketsRequest.PARSER.apply(parser, null);
+            assertThat(parsedRequest, equalTo(getOverallBucketsRequest));
+        }
+    }
 
-        assertEquals("/_xpack/ml/anomaly_detectors/job1,jobs*/_stats", request.getEndpoint());
-        assertEquals(Boolean.toString(true), request.getParameters().get("allow_no_jobs"));
+    public void testGetRecords() throws IOException {
+        String jobId = randomAlphaOfLength(10);
+        GetRecordsRequest getRecordsRequest = new GetRecordsRequest(jobId);
+        getRecordsRequest.setStart("2018-08-08T00:00:00Z");
+        getRecordsRequest.setEnd("2018-09-08T00:00:00Z");
+        getRecordsRequest.setPageParams(new PageParams(100, 300));
+        getRecordsRequest.setRecordScore(75.0);
+        getRecordsRequest.setSort("anomaly_score");
+        getRecordsRequest.setDescending(true);
+        getRecordsRequest.setExcludeInterim(true);
+
+        Request request = MLRequestConverters.getRecords(getRecordsRequest);
+        assertEquals(HttpGet.METHOD_NAME, request.getMethod());
+        assertEquals("/_xpack/ml/anomaly_detectors/" + jobId + "/results/records", request.getEndpoint());
+        try (XContentParser parser = createParser(JsonXContent.jsonXContent, request.getEntity().getContent())) {
+            GetRecordsRequest parsedRequest = GetRecordsRequest.PARSER.apply(parser, null);
+            assertThat(parsedRequest, equalTo(getRecordsRequest));
+        }
     }
 
     private static Job createValidJob(String jobId) {

client/rest-high-level/src/test/java/org/elasticsearch/client/MachineLearningGetResultsIT.java

@@ -23,19 +23,29 @@ import org.elasticsearch.action.index.IndexRequest;
 import org.elasticsearch.action.support.WriteRequest;
 import org.elasticsearch.client.ml.GetBucketsRequest;
 import org.elasticsearch.client.ml.GetBucketsResponse;
+import org.elasticsearch.client.ml.GetOverallBucketsRequest;
+import org.elasticsearch.client.ml.GetOverallBucketsResponse;
 import org.elasticsearch.client.ml.GetRecordsRequest;
 import org.elasticsearch.client.ml.GetRecordsResponse;
 import org.elasticsearch.client.ml.PutJobRequest;
+import org.elasticsearch.client.ml.job.config.AnalysisConfig;
+import org.elasticsearch.client.ml.job.config.DataDescription;
+import org.elasticsearch.client.ml.job.config.Detector;
 import org.elasticsearch.client.ml.job.config.Job;
 import org.elasticsearch.client.ml.job.results.AnomalyRecord;
 import org.elasticsearch.client.ml.job.results.Bucket;
+import org.elasticsearch.client.ml.job.results.OverallBucket;
 import org.elasticsearch.client.ml.job.util.PageParams;
+import org.elasticsearch.common.unit.TimeValue;
 import org.elasticsearch.common.xcontent.XContentType;
 import org.junit.After;
 import org.junit.Before;
 
 import java.io.IOException;
+import java.util.Arrays;
+import java.util.List;
 
+import static org.hamcrest.Matchers.closeTo;
 import static org.hamcrest.Matchers.equalTo;
 import static org.hamcrest.Matchers.greaterThan;
 import static org.hamcrest.Matchers.greaterThanOrEqualTo;
@@ -59,7 +69,7 @@ public class MachineLearningGetResultsIT extends ESRestHighLevelClientTestCase {
     @Before
     public void createJobAndIndexResults() throws IOException {
         MachineLearningClient machineLearningClient = highLevelClient().machineLearning();
-        Job job = MachineLearningIT.buildJob(JOB_ID);
+        Job job = buildJob(JOB_ID);
         machineLearningClient.putJob(new PutJobRequest(job), RequestOptions.DEFAULT);
 
         BulkRequest bulkRequest = new BulkRequest();
@@ -206,6 +216,111 @@ public class MachineLearningGetResultsIT extends ESRestHighLevelClientTestCase {
         }
     }
 
+    public void testGetOverallBuckets() throws IOException {
+        MachineLearningClient machineLearningClient = highLevelClient().machineLearning();
+
+        GetBucketsRequest getBucketsRequest = new GetBucketsRequest(JOB_ID);
+        getBucketsRequest.setPageParams(new PageParams(0, 3));
+        List<Bucket> firstBuckets = machineLearningClient.getBuckets(getBucketsRequest, RequestOptions.DEFAULT).buckets();
+
+        String anotherJobId = "test-get-overall-buckets-job";
+        Job anotherJob = buildJob(anotherJobId);
+        machineLearningClient.putJob(new PutJobRequest(anotherJob), RequestOptions.DEFAULT);
+
+        // Let's index matching buckets with the score being 10.0 higher
+        BulkRequest bulkRequest = new BulkRequest();
+        bulkRequest.setRefreshPolicy(WriteRequest.RefreshPolicy.IMMEDIATE);
+        for (Bucket bucket : firstBuckets) {
+            IndexRequest indexRequest = new IndexRequest(RESULTS_INDEX, DOC);
+            indexRequest.source("{\"job_id\":\"" + anotherJobId + "\", \"result_type\":\"bucket\", \"timestamp\": " +
+                    bucket.getTimestamp().getTime() + "," + "\"bucket_span\": 3600,\"is_interim\": " + bucket.isInterim()
+                    + ", \"anomaly_score\": " + String.valueOf(bucket.getAnomalyScore() + 10.0) + "}", XContentType.JSON);
+            bulkRequest.add(indexRequest);
+        }
+        highLevelClient().bulk(bulkRequest, RequestOptions.DEFAULT);
+
+        {
+            GetOverallBucketsRequest request = new GetOverallBucketsRequest(JOB_ID, anotherJobId);
+
+            GetOverallBucketsResponse response = execute(request, machineLearningClient::getOverallBuckets,
+                    machineLearningClient::getOverallBucketsAsync);
+
+            assertThat(response.count(), equalTo(241L));
+            List<OverallBucket> overallBuckets = response.overallBuckets();
+            assertThat(overallBuckets.size(), equalTo(241));
+            assertThat(overallBuckets.stream().allMatch(b -> b.getBucketSpan() == 3600L), is(true));
+            assertThat(overallBuckets.get(0).getTimestamp().getTime(), equalTo(START_TIME_EPOCH_MS));
+            assertThat(overallBuckets.get(240).isInterim(), is(true));
+        }
+        {
+            GetOverallBucketsRequest request = new GetOverallBucketsRequest(JOB_ID, anotherJobId);
+            request.setBucketSpan(TimeValue.timeValueHours(2));
+
+            GetOverallBucketsResponse response = execute(request, machineLearningClient::getOverallBuckets,
+                    machineLearningClient::getOverallBucketsAsync);
+
+            assertThat(response.count(), equalTo(121L));
+        }
+        {
+            long end = START_TIME_EPOCH_MS + 10 * 3600000L;
+            GetOverallBucketsRequest request = new GetOverallBucketsRequest(JOB_ID, anotherJobId);
+            request.setEnd(String.valueOf(end));
+
+            GetOverallBucketsResponse response = execute(request, machineLearningClient::getOverallBuckets,
+                    machineLearningClient::getOverallBucketsAsync);
+
+            assertThat(response.count(), equalTo(10L));
+            assertThat(response.overallBuckets().get(0).getTimestamp().getTime(), equalTo(START_TIME_EPOCH_MS));
+            assertThat(response.overallBuckets().get(9).getTimestamp().getTime(), equalTo(end - 3600000L));
+        }
+        {
+            GetOverallBucketsRequest request = new GetOverallBucketsRequest(JOB_ID, anotherJobId);
+            request.setExcludeInterim(true);
+
+            GetOverallBucketsResponse response = execute(request, machineLearningClient::getOverallBuckets,
+                    machineLearningClient::getOverallBucketsAsync);
+
+            assertThat(response.count(), equalTo(240L));
+            assertThat(response.overallBuckets().stream().allMatch(b -> b.isInterim() == false), is(true));
+        }
+        {
+            GetOverallBucketsRequest request = new GetOverallBucketsRequest(JOB_ID);
+            request.setOverallScore(75.0);
+
+            GetOverallBucketsResponse response = execute(request, machineLearningClient::getOverallBuckets,
+                    machineLearningClient::getOverallBucketsAsync);
+
+            assertThat(response.count(), equalTo(bucketStats.criticalCount));
+            assertThat(response.overallBuckets().stream().allMatch(b -> b.getOverallScore() >= 75.0), is(true));
+        }
+        {
+            long start = START_TIME_EPOCH_MS + 10 * 3600000L;
+            GetOverallBucketsRequest request = new GetOverallBucketsRequest(JOB_ID, anotherJobId);
+            request.setStart(String.valueOf(start));
+
+            GetOverallBucketsResponse response = execute(request, machineLearningClient::getOverallBuckets,
+                    machineLearningClient::getOverallBucketsAsync);
+
+            assertThat(response.count(), equalTo(231L));
+            assertThat(response.overallBuckets().get(0).getTimestamp().getTime(), equalTo(start));
+        }
+        {
+            GetOverallBucketsRequest request = new GetOverallBucketsRequest(JOB_ID, anotherJobId);
+            request.setEnd(String.valueOf(START_TIME_EPOCH_MS + 3 * 3600000L));
+            request.setTopN(2);
+
+            GetOverallBucketsResponse response = execute(request, machineLearningClient::getOverallBuckets,
+                    machineLearningClient::getOverallBucketsAsync);
+
+            assertThat(response.count(), equalTo(3L));
+            List<OverallBucket> overallBuckets = response.overallBuckets();
+            for (int i = 0; i < overallBuckets.size(); ++i) {
+                // As the second job has scores that are -10 from the first, the overall buckets should be +5 from the initial job
+                assertThat(overallBuckets.get(i).getOverallScore(), is(closeTo(firstBuckets.get(i).getAnomalyScore() + 5.0, 0.0001)));
+            }
+        }
+    }
+
     public void testGetRecords() throws IOException {
         MachineLearningClient machineLearningClient = highLevelClient().machineLearning();
 
@@ -272,6 +387,19 @@ public class MachineLearningGetResultsIT extends ESRestHighLevelClientTestCase {
         }
     }
 
+    public static Job buildJob(String jobId) {
+        Job.Builder builder = new Job.Builder(jobId);
+
+        Detector detector = new Detector.Builder("count", null).build();
+        AnalysisConfig.Builder configBuilder = new AnalysisConfig.Builder(Arrays.asList(detector));
+        configBuilder.setBucketSpan(TimeValue.timeValueHours(1));
+        builder.setAnalysisConfig(configBuilder);
+
+        DataDescription.Builder dataDescription = new DataDescription.Builder();
+        builder.setDataDescription(dataDescription);
+        return builder.build();
+    }
+
     private static class Stats {
         // score < 50.0
         private long minorCount;

client/rest-high-level/src/test/java/org/elasticsearch/client/documentation/MlClientDocumentationIT.java

@@ -20,9 +20,11 @@ package org.elasticsearch.client.documentation;
 
 import org.elasticsearch.action.ActionListener;
 import org.elasticsearch.action.LatchedActionListener;
+import org.elasticsearch.action.bulk.BulkRequest;
 import org.elasticsearch.action.index.IndexRequest;
 import org.elasticsearch.action.support.WriteRequest;
 import org.elasticsearch.client.ESRestHighLevelClientTestCase;
+import org.elasticsearch.client.MachineLearningGetResultsIT;
 import org.elasticsearch.client.MachineLearningIT;
 import org.elasticsearch.client.MlRestTestStateCleaner;
 import org.elasticsearch.client.RequestOptions;
@@ -31,12 +33,16 @@ import org.elasticsearch.client.ml.CloseJobRequest;
 import org.elasticsearch.client.ml.CloseJobResponse;
 import org.elasticsearch.client.ml.DeleteJobRequest;
 import org.elasticsearch.client.ml.DeleteJobResponse;
+import org.elasticsearch.client.ml.FlushJobRequest;
+import org.elasticsearch.client.ml.FlushJobResponse;
 import org.elasticsearch.client.ml.GetBucketsRequest;
 import org.elasticsearch.client.ml.GetBucketsResponse;
 import org.elasticsearch.client.ml.GetJobRequest;
 import org.elasticsearch.client.ml.GetJobResponse;
 import org.elasticsearch.client.ml.GetJobStatsRequest;
 import org.elasticsearch.client.ml.GetJobStatsResponse;
+import org.elasticsearch.client.ml.GetOverallBucketsRequest;
+import org.elasticsearch.client.ml.GetOverallBucketsResponse;
 import org.elasticsearch.client.ml.GetRecordsRequest;
 import org.elasticsearch.client.ml.GetRecordsResponse;
 import org.elasticsearch.client.ml.OpenJobRequest;
@@ -49,12 +55,11 @@ import org.elasticsearch.client.ml.job.config.Detector;
 import org.elasticsearch.client.ml.job.config.Job;
 import org.elasticsearch.client.ml.job.results.AnomalyRecord;
 import org.elasticsearch.client.ml.job.results.Bucket;
+import org.elasticsearch.client.ml.job.results.OverallBucket;
+import org.elasticsearch.client.ml.job.stats.JobStats;
 import org.elasticsearch.client.ml.job.util.PageParams;
 import org.elasticsearch.common.unit.TimeValue;
 import org.elasticsearch.common.xcontent.XContentType;
-import org.elasticsearch.client.ml.FlushJobRequest;
-import org.elasticsearch.client.ml.FlushJobResponse;
-import org.elasticsearch.client.ml.job.stats.JobStats;
 import org.junit.After;
 
 import java.io.IOException;
@@ -65,9 +70,11 @@ import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
+import static org.hamcrest.Matchers.closeTo;
 import static org.hamcrest.Matchers.containsInAnyOrder;
 import static org.hamcrest.Matchers.greaterThan;
 import static org.hamcrest.Matchers.hasSize;
+import static org.hamcrest.core.Is.is;
 
 public class MlClientDocumentationIT extends ESRestHighLevelClientTestCase {
 
@@ -584,6 +591,107 @@ public class MlClientDocumentationIT extends ESRestHighLevelClientTestCase {
         }
     }
 
+    public void testGetOverallBuckets() throws IOException, InterruptedException {
+        RestHighLevelClient client = highLevelClient();
+
+        String jobId1 = "test-get-overall-buckets-1";
+        String jobId2 = "test-get-overall-buckets-2";
+        Job job1 = MachineLearningGetResultsIT.buildJob(jobId1);
+        Job job2 = MachineLearningGetResultsIT.buildJob(jobId2);
+        client.machineLearning().putJob(new PutJobRequest(job1), RequestOptions.DEFAULT);
+        client.machineLearning().putJob(new PutJobRequest(job2), RequestOptions.DEFAULT);
+
+        // Let us index some buckets
+        BulkRequest bulkRequest = new BulkRequest();
+        bulkRequest.setRefreshPolicy(WriteRequest.RefreshPolicy.IMMEDIATE);
+
+        {
+            IndexRequest indexRequest = new IndexRequest(".ml-anomalies-shared", "doc");
+            indexRequest.source("{\"job_id\":\"test-get-overall-buckets-1\", \"result_type\":\"bucket\", \"timestamp\": 1533081600000," +
+                    "\"bucket_span\": 600,\"is_interim\": false, \"anomaly_score\": 60.0}", XContentType.JSON);
+            bulkRequest.add(indexRequest);
+        }
+        {
+            IndexRequest indexRequest = new IndexRequest(".ml-anomalies-shared", "doc");
+            indexRequest.source("{\"job_id\":\"test-get-overall-buckets-2\", \"result_type\":\"bucket\", \"timestamp\": 1533081600000," +
+                    "\"bucket_span\": 3600,\"is_interim\": false, \"anomaly_score\": 100.0}", XContentType.JSON);
+            bulkRequest.add(indexRequest);
+        }
+
+        client.bulk(bulkRequest, RequestOptions.DEFAULT);
+
+        {
+            // tag::x-pack-ml-get-overall-buckets-request
+            GetOverallBucketsRequest request = new GetOverallBucketsRequest(jobId1, jobId2); // <1>
+            // end::x-pack-ml-get-overall-buckets-request
+
+            // tag::x-pack-ml-get-overall-buckets-bucket-span
+            request.setBucketSpan(TimeValue.timeValueHours(24)); // <1>
+            // end::x-pack-ml-get-overall-buckets-bucket-span
+
+            // tag::x-pack-ml-get-overall-buckets-end
+            request.setEnd("2018-08-21T00:00:00Z"); // <1>
+            // end::x-pack-ml-get-overall-buckets-end
+
+            // tag::x-pack-ml-get-overall-buckets-exclude-interim
+            request.setExcludeInterim(true); // <1>
+            // end::x-pack-ml-get-overall-buckets-exclude-interim
+
+            // tag::x-pack-ml-get-overall-buckets-overall-score
+            request.setOverallScore(75.0); // <1>
+            // end::x-pack-ml-get-overall-buckets-overall-score
+
+            // tag::x-pack-ml-get-overall-buckets-start
+            request.setStart("2018-08-01T00:00:00Z"); // <1>
+            // end::x-pack-ml-get-overall-buckets-start
+
+            // tag::x-pack-ml-get-overall-buckets-top-n
+            request.setTopN(2); // <1>
+            // end::x-pack-ml-get-overall-buckets-top-n
+
+            // tag::x-pack-ml-get-overall-buckets-execute
+            GetOverallBucketsResponse response = client.machineLearning().getOverallBuckets(request, RequestOptions.DEFAULT);
+            // end::x-pack-ml-get-overall-buckets-execute
+
+            // tag::x-pack-ml-get-overall-buckets-response
+            long count = response.count(); // <1>
+            List<OverallBucket> overallBuckets = response.overallBuckets(); // <2>
+            // end::x-pack-ml-get-overall-buckets-response
+
+            assertEquals(1, overallBuckets.size());
+            assertThat(overallBuckets.get(0).getOverallScore(), is(closeTo(80.0, 0.001)));
+
+        }
+        {
+            GetOverallBucketsRequest request = new GetOverallBucketsRequest(jobId1, jobId2);
+
+            // tag::x-pack-ml-get-overall-buckets-listener
+            ActionListener<GetOverallBucketsResponse> listener =
+                    new ActionListener<GetOverallBucketsResponse>() {
+                        @Override
+                        public void onResponse(GetOverallBucketsResponse getOverallBucketsResponse) {
+                            // <1>
+                        }
+
+                        @Override
+                        public void onFailure(Exception e) {
+                            // <2>
+                        }
+                    };
+            // end::x-pack-ml-get-overall-buckets-listener
+
+            // Replace the empty listener by a blocking listener in test
+            final CountDownLatch latch = new CountDownLatch(1);
+            listener = new LatchedActionListener<>(listener, latch);
+
+            // tag::x-pack-ml-get-overall-buckets-execute-async
+            client.machineLearning().getOverallBucketsAsync(request, RequestOptions.DEFAULT, listener); // <1>
+            // end::x-pack-ml-get-overall-buckets-execute-async
+
+            assertTrue(latch.await(30L, TimeUnit.SECONDS));
+        }
+    }
+
     public void testGetRecords() throws IOException, InterruptedException {
         RestHighLevelClient client = highLevelClient();
 

client/rest-high-level/src/test/java/org/elasticsearch/client/ml/GetOverallBucketsRequestTests.java

@@ -0,0 +1,67 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.elasticsearch.client.ml;
+
+import org.elasticsearch.common.unit.TimeValue;
+import org.elasticsearch.common.xcontent.XContentParser;
+import org.elasticsearch.test.AbstractXContentTestCase;
+
+import java.io.IOException;
+
+public class GetOverallBucketsRequestTests extends AbstractXContentTestCase<GetOverallBucketsRequest> {
+
+    @Override
+    protected GetOverallBucketsRequest createTestInstance() {
+        GetOverallBucketsRequest request = new GetOverallBucketsRequest(randomAlphaOfLengthBetween(1, 20));
+
+        if (randomBoolean()) {
+            request.setTopN(randomIntBetween(1, 10));
+        }
+
+        if (randomBoolean()) {
+            request.setBucketSpan(TimeValue.timeValueSeconds(randomIntBetween(1, 1_000_000)));
+        }
+        if (randomBoolean()) {
+            request.setStart(String.valueOf(randomLong()));
+        }
+        if (randomBoolean()) {
+            request.setEnd(String.valueOf(randomLong()));
+        }
+        if (randomBoolean()) {
+            request.setExcludeInterim(randomBoolean());
+        }
+        if (randomBoolean()) {
+            request.setOverallScore(randomDouble());
+        }
+        if (randomBoolean()) {
+            request.setExcludeInterim(randomBoolean());
+        }
+        return request;
+    }
+
+    @Override
+    protected GetOverallBucketsRequest doParseInstance(XContentParser parser) throws IOException {
+        return GetOverallBucketsRequest.PARSER.apply(parser, null);
+    }
+
+    @Override
+    protected boolean supportsUnknownFields() {
+        return false;
+    }
+}

client/rest-high-level/src/test/java/org/elasticsearch/client/ml/GetOverallBucketsResponseTests.java

@@ -0,0 +1,52 @@
+/*
+ * Licensed to Elasticsearch under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.elasticsearch.client.ml;
+
+import org.elasticsearch.client.ml.job.results.OverallBucket;
+import org.elasticsearch.client.ml.job.results.OverallBucketTests;
+import org.elasticsearch.common.xcontent.XContentParser;
+import org.elasticsearch.test.AbstractXContentTestCase;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class GetOverallBucketsResponseTests extends AbstractXContentTestCase<GetOverallBucketsResponse> {
+
+    @Override
+    protected GetOverallBucketsResponse createTestInstance() {
+        int listSize = randomInt(10);
+        List<OverallBucket> overallBuckets = new ArrayList<>(listSize);
+        for (int j = 0; j < listSize; j++) {
+            OverallBucket overallBucket = OverallBucketTests.createRandom();
+            overallBuckets.add(overallBucket);
+        }
+        return new GetOverallBucketsResponse(overallBuckets, listSize);
+    }
+
+    @Override
+    protected GetOverallBucketsResponse doParseInstance(XContentParser parser) throws IOException {
+        return GetOverallBucketsResponse.fromXContent(parser);
+    }
+
+    @Override
+    protected boolean supportsUnknownFields() {
+        return true;
+    }
+}

client/rest-high-level/src/test/java/org/elasticsearch/client/ml/job/results/OverallBucketTests.java

@@ -32,6 +32,10 @@ public class OverallBucketTests extends AbstractXContentTestCase<OverallBucket>
 
     @Override
     protected OverallBucket createTestInstance() {
+        return createRandom();
+    }
+
+    public static OverallBucket createRandom() {
         int jobCount = randomIntBetween(0, 10);
         List<OverallBucket.JobInfo> jobs = new ArrayList<>(jobCount);
         for (int i = 0; i < jobCount; ++i) {

docs/java-rest/high-level/ml/get-buckets.asciidoc

@@ -70,7 +70,7 @@ include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-s
 
 ["source","java",subs="attributes,callouts,macros"]
 --------------------------------------------------
-include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-end]
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-buckets-start]
 --------------------------------------------------
 <1> Buckets with timestamps on or after this time will be returned.
 

docs/java-rest/high-level/ml/get-overall-buckets.asciidoc

@@ -0,0 +1,107 @@
+[[java-rest-high-x-pack-ml-get-overall-buckets]]
+=== Get Overall Buckets API
+
+The Get Overall Buckets API retrieves overall bucket results that
+summarize the bucket results of multiple jobs.
+It accepts a `GetOverallBucketsRequest` object and responds
+with a `GetOverallBucketsResponse` object.
+
+[[java-rest-high-x-pack-ml-get-overall-buckets-request]]
+==== Get Overall Buckets Request
+
+A `GetOverallBucketsRequest` object gets created with one or more `jobId`.
+
+["source","java",subs="attributes,callouts,macros"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-request]
+--------------------------------------------------
+<1> Constructing a new request referencing job IDs `jobId1` and `jobId2`.
+
+==== Optional Arguments
+The following arguments are optional:
+
+["source","java",subs="attributes,callouts,macros"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-bucket-span]
+--------------------------------------------------
+<1> The span of the overall buckets. Must be greater or equal to the jobs' largest `bucket_span`.
+
+["source","java",subs="attributes,callouts,macros"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-end]
+--------------------------------------------------
+<1> Overall buckets with timestamps earlier than this time will be returned.
+
+["source","java",subs="attributes,callouts,macros"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-exclude-interim]
+--------------------------------------------------
+<1> If `true`, interim results will be excluded. Overall buckets are interim if any of the job buckets
+within the overall bucket interval are interim. Defaults to `false`.
+
+["source","java",subs="attributes,callouts,macros"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-overall-score]
+--------------------------------------------------
+<1> Overall buckets with overall scores greater or equal than this value will be returned.
+
+["source","java",subs="attributes,callouts,macros"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-start]
+--------------------------------------------------
+<1> Overall buckets with timestamps on or after this time will be returned.
+
+["source","java",subs="attributes,callouts,macros"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-top-n]
+--------------------------------------------------
+<1> The number of top job bucket scores to be used in the `overall_score` calculation. Defaults to `1`.
+
+[[java-rest-high-x-pack-ml-get-overall-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"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-execute]
+--------------------------------------------------
+
+[[java-rest-high-x-pack-ml-get-overall-buckets-execution-async]]
+==== Asynchronous Execution
+
+The request can also be executed asynchronously:
+
+["source","java",subs="attributes,callouts,macros"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-execute-async]
+--------------------------------------------------
+<1> The `GetOverallBucketsRequest` 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"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-listener]
+--------------------------------------------------
+<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-overall-buckets-response]]
+==== Get Overall Buckets Response
+
+The returned `GetOverallBucketsResponse` contains the requested buckets:
+
+["source","java",subs="attributes,callouts,macros"]
+--------------------------------------------------
+include-tagged::{doc-tests}/MlClientDocumentationIT.java[x-pack-ml-get-overall-buckets-response]
+--------------------------------------------------
+<1> The count of overall buckets that were matched
+<2> The overall buckets retrieved

docs/java-rest/high-level/supported-apis.asciidoc

@@ -216,6 +216,7 @@ The Java High Level REST Client supports the following Machine Learning APIs:
 * <<java-rest-high-x-pack-ml-flush-job>>
 * <<java-rest-high-x-pack-ml-get-job-stats>>
 * <<java-rest-high-x-pack-ml-get-buckets>>
+* <<java-rest-high-x-pack-ml-get-overall-buckets>>
 * <<java-rest-high-x-pack-ml-get-records>>
 
 include::ml/put-job.asciidoc[]
@@ -226,6 +227,7 @@ include::ml/close-job.asciidoc[]
 include::ml/flush-job.asciidoc[]
 include::ml/get-job-stats.asciidoc[]
 include::ml/get-buckets.asciidoc[]
+include::ml/get-overall-buckets.asciidoc[]
 include::ml/get-records.asciidoc[]
 
 == Migration APIs