Shixiong Zhu created SPARK-7174:
-----------------------------------
Summary: Move calling `TaskScheduler.executorHeartbeatReceived` to
another thread to avoid blocking the Akka thread pool
Key: SPARK-7174
URL: https://issues.apache.org/jira/browse/SPARK-7174
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.3.1, 1.2.2
Reporter: Shixiong Zhu
HeartbeatReceiver will TaskScheduler.executorHeartbeatReceived, which is a
blocking operation because "TaskScheduler.executorHeartbeatReceived" will call
{code}
blockManagerMaster.driverEndpoint.askWithReply[Boolean](
BlockManagerHeartbeat(blockManagerId), 600 seconds)
{code}
finally. Even if it asks from a local Actor, it may block the current Akka
thread. E.g., the reply may be dispatched to the same thread of the ask
operation. So the reply cannot be processed. An extreme case is setting the
thread number of Akka dispatch thread pool to 1.
jstack log:
{code}
"sparkDriver-akka.actor.default-dispatcher-14" daemon prio=10
tid=0x00007f2a8c02d000 nid=0x725 waiting on condition [0x00007f2b1d6d0000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000006197a0868> (a
scala.concurrent.impl.Promise$CompletionLatch)
at
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1033)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1326)
at
scala.concurrent.impl.Promise$DefaultPromise.tryAwait(Promise.scala:208)
at scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:218)
at
scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223)
at scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107)
at
akka.dispatch.MonitorableThreadFactory$AkkaForkJoinWorkerThread$$anon$3.block(ThreadPoolBuilder.scala:169)
at
scala.concurrent.forkjoin.ForkJoinPool.managedBlock(ForkJoinPool.java:3640)
at
akka.dispatch.MonitorableThreadFactory$AkkaForkJoinWorkerThread.blockOn(ThreadPoolBuilder.scala:167)
at scala.concurrent.Await$.result(package.scala:107)
at org.apache.spark.rpc.RpcEndpointRef.askWithReply(RpcEnv.scala:355)
at
org.apache.spark.scheduler.DAGScheduler.executorHeartbeatReceived(DAGScheduler.scala:169)
at
org.apache.spark.scheduler.TaskSchedulerImpl.executorHeartbeatReceived(TaskSchedulerImpl.scala:367)
at
org.apache.spark.HeartbeatReceiver$$anonfun$receiveAndReply$1.applyOrElse(HeartbeatReceiver.scala:103)
at
org.apache.spark.rpc.akka.AkkaRpcEnv.org$apache$spark$rpc$akka$AkkaRpcEnv$$processMessage(AkkaRpcEnv.scala:182)
at
org.apache.spark.rpc.akka.AkkaRpcEnv$$anonfun$actorRef$lzycompute$1$1$$anon$1$$anonfun$receiveWithLogging$1$$anonfun$applyOrElse$4.apply$mcV$sp(AkkaRpcEnv.scala:128)
at
org.apache.spark.rpc.akka.AkkaRpcEnv.org$apache$spark$rpc$akka$AkkaRpcEnv$$safelyCall(AkkaRpcEnv.scala:203)
at
org.apache.spark.rpc.akka.AkkaRpcEnv$$anonfun$actorRef$lzycompute$1$1$$anon$1$$anonfun$receiveWithLogging$1.applyOrElse(AkkaRpcEnv.scala:127)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
at
scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
at
org.apache.spark.util.ActorLogReceive$$anon$1.apply(ActorLogReceive.scala:59)
at
org.apache.spark.util.ActorLogReceive$$anon$1.apply(ActorLogReceive.scala:42)
at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
at
org.apache.spark.util.ActorLogReceive$$anon$1.applyOrElse(ActorLogReceive.scala:42)
at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
at
org.apache.spark.rpc.akka.AkkaRpcEnv$$anonfun$actorRef$lzycompute$1$1$$anon$1.aroundReceive(AkkaRpcEnv.scala:94)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
at akka.actor.ActorCell.invoke(ActorCell.scala:487)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
at akka.dispatch.Mailbox.run(Mailbox.scala:220)
at
akka.dispatch.ForkJoinExecutorConfigurator$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)
{code}
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