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Chengxiang Li commented on HIVE-8855: ------------------------------------- Hi, [~jxiang], I hit this exception with the path. {noformat} onReceive(314)) - Received hello from akka.tcp://79ec2601-f6e9-40de-b7bf-6b5760126a28@192.168.150.114:33902/user/RemoteDriver 2014-11-25 17:40:01,502 ERROR [94df45b9-4960-487f-ab39-6b659fc6b899-akka.actor.default-dispatcher-4]: remote.EndpointWriter (Slf4jLogger.scala:apply$mcV$sp(66)) - Transient association error (association remains live) java.io.NotSerializableException: java.lang.Thread at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1508) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1508) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177) at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1508) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347) at akka.serialization.JavaSerializer$$anonfun$toBinary$1.apply$mcV$sp(Serializer.scala:129) at akka.serialization.JavaSerializer$$anonfun$toBinary$1.apply(Serializer.scala:129) at akka.serialization.JavaSerializer$$anonfun$toBinary$1.apply(Serializer.scala:129) at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57) at akka.serialization.JavaSerializer.toBinary(Serializer.scala:129) at akka.remote.serialization.MessageContainerSerializer.serializeSelection(MessageContainerSerializer.scala:36) at akka.remote.serialization.MessageContainerSerializer.toBinary(MessageContainerSerializer.scala:25) at akka.remote.MessageSerializer$.serialize(MessageSerializer.scala:36) at akka.remote.EndpointWriter$$anonfun$serializeMessage$1.apply(Endpoint.scala:845) at akka.remote.EndpointWriter$$anonfun$serializeMessage$1.apply(Endpoint.scala:845) at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57) at akka.remote.EndpointWriter.serializeMessage(Endpoint.scala:844) at akka.remote.EndpointWriter.writeSend(Endpoint.scala:747) at akka.remote.EndpointWriter$$anonfun$2.applyOrElse(Endpoint.scala:722) at akka.actor.Actor$class.aroundReceive(Actor.scala:465) at akka.remote.EndpointActor.aroundReceive(Endpoint.scala:415) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) at akka.actor.ActorCell.invoke(ActorCell.scala:487) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238) at akka.dispatch.Mailbox.run(Mailbox.scala:220) at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393) at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) {noformat} It should because SparkClientImpl::getExecutorCount submit inner class job which make akka serializer SparkClientImpl instance with Java Serializer, I think you may move the logic of getExecutorCount to RemoteSparkClient. > Automatic calculate reduce number for spark job[Spark Branch] > ------------------------------------------------------------- > > Key: HIVE-8855 > URL: https://issues.apache.org/jira/browse/HIVE-8855 > Project: Hive > Issue Type: Sub-task > Components: Spark > Reporter: Chengxiang Li > Assignee: Jimmy Xiang > Labels: Spark-M3 > Fix For: spark-branch > > Attachments: HIVE-8855.1-spark.patch, HIVE-8855.2-spark.patch > > > As the following up work of HIVE-8649, we should enable reduce number > automatic calculation for both local spark client and remote spark client. -- This message was sent by Atlassian JIRA (v6.3.4#6332)