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Subject [GitHub] [flink] wangyang0918 commented on a change in pull request #9984: [FLINK-9495][kubernetes] Implement ResourceManager for Kubernetes.
Date Thu, 05 Dec 2019 08:47:44 GMT
wangyang0918 commented on a change in pull request #9984: [FLINK-9495][kubernetes] Implement
ResourceManager for Kubernetes.
URL: https://github.com/apache/flink/pull/9984#discussion_r354172625
 
 

 ##########
 File path: flink-kubernetes/src/main/java/org/apache/flink/kubernetes/KubernetesResourceManager.java
 ##########
 @@ -0,0 +1,381 @@
+/*
+ * 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.kubernetes;
+
+import org.apache.flink.annotation.VisibleForTesting;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.configuration.GlobalConfiguration;
+import org.apache.flink.configuration.TaskManagerOptions;
+import org.apache.flink.kubernetes.configuration.KubernetesConfigOptions;
+import org.apache.flink.kubernetes.kubeclient.FlinkKubeClient;
+import org.apache.flink.kubernetes.kubeclient.KubeClientFactory;
+import org.apache.flink.kubernetes.kubeclient.TaskManagerPodParameter;
+import org.apache.flink.kubernetes.kubeclient.resources.KubernetesPod;
+import org.apache.flink.kubernetes.taskmanager.KubernetesTaskExecutorRunner;
+import org.apache.flink.kubernetes.utils.Constants;
+import org.apache.flink.kubernetes.utils.KubernetesUtils;
+import org.apache.flink.runtime.clusterframework.ApplicationStatus;
+import org.apache.flink.runtime.clusterframework.BootstrapTools;
+import org.apache.flink.runtime.clusterframework.ContaineredTaskManagerParameters;
+import org.apache.flink.runtime.clusterframework.TaskExecutorResourceSpec;
+import org.apache.flink.runtime.clusterframework.TaskExecutorResourceUtils;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.clusterframework.types.ResourceProfile;
+import org.apache.flink.runtime.concurrent.FutureUtils;
+import org.apache.flink.runtime.entrypoint.ClusterInformation;
+import org.apache.flink.runtime.entrypoint.parser.CommandLineOptions;
+import org.apache.flink.runtime.heartbeat.HeartbeatServices;
+import org.apache.flink.runtime.highavailability.HighAvailabilityServices;
+import org.apache.flink.runtime.metrics.groups.ResourceManagerMetricGroup;
+import org.apache.flink.runtime.resourcemanager.JobLeaderIdService;
+import org.apache.flink.runtime.resourcemanager.ResourceManager;
+import org.apache.flink.runtime.resourcemanager.exceptions.ResourceManagerException;
+import org.apache.flink.runtime.resourcemanager.slotmanager.SlotManager;
+import org.apache.flink.runtime.rpc.FatalErrorHandler;
+import org.apache.flink.runtime.rpc.RpcService;
+import org.apache.flink.util.FlinkException;
+import org.apache.flink.util.FlinkRuntimeException;
+import org.apache.flink.util.Preconditions;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.annotation.Nullable;
+
+import java.io.File;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * Kubernetes specific implementation of the {@link ResourceManager}.
+ */
+public class KubernetesResourceManager extends ResourceManager<KubernetesWorkerNode>
+	implements FlinkKubeClient.PodCallbackHandler {
+
+	private static final Logger LOG = LoggerFactory.getLogger(KubernetesResourceManager.class);
+
+	/** The taskmanager pod name pattern is {clusterId}-{taskmanager}-{attemptId}-{podIndex}.
*/
+	private static final String TASK_MANAGER_POD_FORMAT = "%s-taskmanager-%d-%d";
+
+	private final ConcurrentMap<ResourceID, KubernetesWorkerNode> workerNodeMap;
+
+	private final int numberOfTaskSlots;
+
+	private final TaskExecutorResourceSpec taskExecutorResourceSpec;
+
+	private final int defaultTaskManagerMemoryMB;
+
+	private final double defaultCpus;
+
+	private final Collection<ResourceProfile> slotsPerWorker;
+
+	private final Configuration flinkConfig;
+
+	/** Flink configuration uploaded by client. */
+	private final Configuration flinkClientConfig;
+
+	/** When ResourceManager failover, the max attempt should recover. */
+	private final AtomicLong currentMaxAttemptId = new AtomicLong(0);
+
+	private final AtomicLong currentMaxPodId = new AtomicLong(0);
+
+	private final String clusterId;
+
+	private FlinkKubeClient kubeClient;
+
+	/** The number of pods requested, but not yet granted. */
+	private int numPendingPodRequests;
+
+	public KubernetesResourceManager(
+		RpcService rpcService,
+		String resourceManagerEndpointId,
+		ResourceID resourceId,
+		Configuration flinkConfig,
+		HighAvailabilityServices highAvailabilityServices,
+		HeartbeatServices heartbeatServices,
+		SlotManager slotManager,
+		JobLeaderIdService jobLeaderIdService,
+		ClusterInformation clusterInformation,
+		FatalErrorHandler fatalErrorHandler,
+		ResourceManagerMetricGroup resourceManagerMetricGroup) {
+		super(
+			rpcService,
+			resourceManagerEndpointId,
+			resourceId,
+			highAvailabilityServices,
+			heartbeatServices,
+			slotManager,
+			jobLeaderIdService,
+			clusterInformation,
+			fatalErrorHandler,
+			resourceManagerMetricGroup);
+
+		this.flinkConfig = flinkConfig;
+		this.clusterId = flinkConfig.getString(KubernetesConfigOptions.CLUSTER_ID);
+
+		this.workerNodeMap = new ConcurrentHashMap<>();
+
+		this.numPendingPodRequests = 0;
 
 Review comment:
   Nice suggestion. I will initialize `workerNodeMap` and `numPendingPodRequests` in declaration.

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