Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/5392#discussion_r27969874
--- Diff: core/src/main/scala/org/apache/spark/deploy/Client.scala ---
@@ -17,33 +17,38 @@
package org.apache.spark.deploy
-import scala.concurrent._
+import scala.concurrent.ExecutionContext
+import scala.util.{Failure, Success}
-import akka.actor._
-import akka.pattern.ask
-import akka.remote.{AssociationErrorEvent, DisassociatedEvent,
RemotingLifecycleEvent}
import org.apache.log4j.{Level, Logger}
+import org.apache.spark.rpc.{RpcEndpointRef, RpcAddress, RpcEnv,
ThreadSafeRpcEndpoint}
import org.apache.spark.{Logging, SecurityManager, SparkConf}
import org.apache.spark.deploy.DeployMessages._
import org.apache.spark.deploy.master.{DriverState, Master}
-import org.apache.spark.util.{ActorLogReceive, AkkaUtils, Utils}
+import org.apache.spark.util.Utils
/**
* Proxy that relays messages to the driver.
*/
-private class ClientActor(driverArgs: ClientArguments, conf: SparkConf)
- extends Actor with ActorLogReceive with Logging {
-
- var masterActor: ActorSelection = _
- val timeout = AkkaUtils.askTimeout(conf)
-
- override def preStart(): Unit = {
- masterActor = context.actorSelection(
- Master.toAkkaUrl(driverArgs.master,
AkkaUtils.protocol(context.system)))
-
- context.system.eventStream.subscribe(self,
classOf[RemotingLifecycleEvent])
+private class ClientEndpoint(
+ override val rpcEnv: RpcEnv,
+ driverArgs: ClientArguments,
+ masterEndpoint: RpcEndpointRef,
+ conf: SparkConf)
+ extends ThreadSafeRpcEndpoint with Logging {
+
+ private val forwardMessageThread = Utils.newDaemonFixedThreadPool(1,
"client-forward-message")
--- End diff --
Just my personal habit. I usually use `Thread` to highlight that it's a
single thread executor.
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