Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/5893#discussion_r183357592
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/rest/handler/job/SubtasksAllAccumulatorsHandler.java
---
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF 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.apache.flink.runtime.rest.handler.job;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.accumulators.StringifiedAccumulatorResult;
+import org.apache.flink.runtime.executiongraph.AccessExecutionJobVertex;
+import org.apache.flink.runtime.executiongraph.AccessExecutionVertex;
+import org.apache.flink.runtime.rest.handler.HandlerRequest;
+import org.apache.flink.runtime.rest.handler.RestHandlerException;
+import org.apache.flink.runtime.rest.handler.legacy.ExecutionGraphCache;
+import org.apache.flink.runtime.rest.messages.EmptyRequestBody;
+import org.apache.flink.runtime.rest.messages.JobVertexMessageParameters;
+import org.apache.flink.runtime.rest.messages.MessageHeaders;
+import
org.apache.flink.runtime.rest.messages.job.SubtasksAllAccumulatorsInfo;
+import org.apache.flink.runtime.rest.messages.job.UserAccumulator;
+import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
+import org.apache.flink.runtime.webmonitor.RestfulGateway;
+import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executor;
+
+/**
+ * Request handler for the subtasks all accumulators.
+ */
+public class SubtasksAllAccumulatorsHandler extends
AbstractJobVertexHandler<SubtasksAllAccumulatorsInfo,
JobVertexMessageParameters> {
+
+ /**
+ * Instantiates a new subtasks all accumulators handler.
--- End diff --
we typically don't have javadocs on constructors as they rarely offer any
value
---
