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/*
* 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 java.nio.ByteBuffer
import org.apache.spark.TaskState.TaskState
import org.apache.spark.rpc.RpcEndpointRef
import org.apache.spark.scheduler.ExecutorLossReason
import org.apache.spark.util.{SerializableBuffer, Utils}
private[spark] sealed trait CoarseGrainedClusterMessage extends Serializable
private[spark] object CoarseGrainedClusterMessages {
case object RetrieveSparkProps extends CoarseGrainedClusterMessage
// Driver to executors
case class LaunchTask(data: SerializableBuffer) extends CoarseGrainedClusterMessage
case class KillTask(taskId: Long, executor: String, interruptThread: Boolean)
extends CoarseGrainedClusterMessage
sealed trait RegisterExecutorResponse
case class RegisteredExecutor(hostname: String) extends CoarseGrainedClusterMessage
with RegisterExecutorResponse
case class RegisterExecutorFailed(message: String) extends CoarseGrainedClusterMessage
with RegisterExecutorResponse
// Executors to driver
case class RegisterExecutor(
executorId: String,
executorRef: RpcEndpointRef,
hostPort: String,
cores: Int,
logUrls: Map[String, String])
extends CoarseGrainedClusterMessage
case class StatusUpdate(executorId: String, taskId: Long, state: TaskState,
data: SerializableBuffer) extends CoarseGrainedClusterMessage
object StatusUpdate {
/** Alternate factory method that takes a ByteBuffer directly for the data field */
def apply(executorId: String, taskId: Long, state: TaskState, data: ByteBuffer)
: StatusUpdate = {
StatusUpdate(executorId, taskId, state, new SerializableBuffer(data))
}
}
// Internal messages in driver
case object ReviveOffers extends CoarseGrainedClusterMessage
case object StopDriver extends CoarseGrainedClusterMessage
case object StopExecutor extends CoarseGrainedClusterMessage
case object StopExecutors extends CoarseGrainedClusterMessage
case class RemoveExecutor(executorId: String, reason: ExecutorLossReason)
extends CoarseGrainedClusterMessage
case class SetupDriver(driver: RpcEndpointRef) extends CoarseGrainedClusterMessage
// Exchanged between the driver and the AM in Yarn client mode
case class AddWebUIFilter(
filterName: String, filterParams: Map[String, String], proxyBase: String)
extends CoarseGrainedClusterMessage
// Messages exchanged between the driver and the cluster manager for executor allocation
// In Yarn mode, these are exchanged between the driver and the AM
case class RegisterClusterManager(am: RpcEndpointRef) extends CoarseGrainedClusterMessage
// Request executors by specifying the new total number of executors desired
// This includes executors already pending or running
case class RequestExecutors(
requestedTotal: Int,
localityAwareTasks: Int,
hostToLocalTaskCount: Map[String, Int])
extends CoarseGrainedClusterMessage
// Check if an executor was force-killed but for a reason unrelated to the running tasks.
// This could be the case if the executor is preempted, for instance.
case class GetExecutorLossReason(executorId: String) extends CoarseGrainedClusterMessage
case class KillExecutors(executorIds: Seq[String]) extends CoarseGrainedClusterMessage
// Used internally by executors to shut themselves down.
case object Shutdown extends CoarseGrainedClusterMessage
}
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