Github user jiangxb1987 commented on a diff in the pull request: https://github.com/apache/spark/pull/19717#discussion_r153222750 --- Diff: resource-managers/kubernetes/core/src/main/scala/org/apache/spark/deploy/k8s/submit/LoggingPodStatusWatcher.scala --- @@ -0,0 +1,184 @@ +/* + * 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.spark.deploy.k8s.submit + +import java.util.concurrent.{CountDownLatch, TimeUnit} + +import scala.collection.JavaConverters._ + +import io.fabric8.kubernetes.api.model.{ContainerStateRunning, ContainerStateTerminated, ContainerStateWaiting, ContainerStatus, Pod, Time} +import io.fabric8.kubernetes.client.{KubernetesClientException, Watcher} +import io.fabric8.kubernetes.client.Watcher.Action + +import org.apache.spark.SparkException +import org.apache.spark.internal.Logging +import org.apache.spark.util.ThreadUtils + +private[k8s] trait LoggingPodStatusWatcher extends Watcher[Pod] { + def awaitCompletion(): Unit +} + +/** + * A monitor for the running Kubernetes pod of a Spark application. Status logging occurs on + * every state change and also at an interval for liveness. + * + * @param appId application ID. + * @param maybeLoggingInterval ms between each state request. If provided, must be a positive + * number. + */ +private[k8s] class LoggingPodStatusWatcherImpl( + appId: String, maybeLoggingInterval: Option[Long]) --- End diff -- nit: each param for a single line.
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