spark YarnClusterScheduler 源码
spark YarnClusterScheduler 代码
文件路径：/resource-managers/yarn/src/main/scala/org/apache/spark/scheduler/cluster/YarnClusterScheduler.scala
/*
* 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.scheduler.cluster
import org.apache.spark._
import org.apache.spark.deploy.yarn.ApplicationMaster
/**
* This is a simple extension to YarnScheduler - to ensure that appropriate initialization of
* ApplicationMaster, etc is done
*/
private[spark] class YarnClusterScheduler(sc: SparkContext) extends YarnScheduler(sc) {
logInfo("Created YarnClusterScheduler")
override def postStartHook(): Unit = {
ApplicationMaster.sparkContextInitialized(sc)
super.postStartHook()
logInfo("YarnClusterScheduler.postStartHook done")
}
}
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