spark StandaloneAppClientListener 源码
spark StandaloneAppClientListener 代码
文件路径：/core/src/main/scala/org/apache/spark/deploy/client/StandaloneAppClientListener.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.deploy.client
import org.apache.spark.scheduler.ExecutorDecommissionInfo
/**
* Callbacks invoked by deploy client when various events happen. There are currently five events:
* connecting to the cluster, disconnecting, being given an executor, having an executor removed
* (either due to failure or due to revocation), and having a worker removed.
*
* Users of this API should *not* block inside the callback methods.
*/
private[spark] trait StandaloneAppClientListener {
def connected(appId: String): Unit
/** Disconnection may be a temporary state, as we fail over to a new Master. */
def disconnected(): Unit
/** An application death is an unrecoverable failure condition. */
def dead(reason: String): Unit
def executorAdded(
fullId: String, workerId: String, hostPort: String, cores: Int, memory: Int): Unit
def executorRemoved(
fullId: String, message: String, exitStatus: Option[Int], workerHost: Option[String]): Unit
def executorDecommissioned(fullId: String, decommissionInfo: ExecutorDecommissionInfo): Unit
def workerRemoved(workerId: String, host: String, message: String): Unit
}
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