Hi All, We have created a regression test for a spark job that is executed during our automated build. It executes a spark-submit with a local master, processes some data, and the exits. We have an issue in that we get a non-deterministic timeout error. It seems to be when the spark context tries to initialise Akka (stack trace below). It doesn't happen often, but when it does it causes the whole build to fail.
The machines that run these tests get very heavily loaded, with many regression tests running simultaneously. My theory is that the spark-submit is sometimes unable to initialise Akka in time because the machines are so heavily loaded with the other tests. My first thought was to try to tune some parameter to extend the timeout, but I couldn't find anything in the documentation. The timeout is short at 10s, whereas the default akka timeout is set at 100s. Is there a way to adjust this timeout? 16/07/17 00:04:22 ERROR SparkContext: Error initializing SparkContext. java.util.concurrent.TimeoutException: Futures timed out after [10000 milliseconds] at scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219) at scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223) at scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107) at scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53) at scala.concurrent.Await$.result(package.scala:107) at akka.remote.Remoting.start(Remoting.scala:179) at akka.remote.RemoteActorRefProvider.init(RemoteActorRefProvider.scala:184) at akka.actor.ActorSystemImpl.liftedTree2$1(ActorSystem.scala:620) at akka.actor.ActorSystemImpl._start$lzycompute(ActorSystem.scala:617) at akka.actor.ActorSystemImpl._start(ActorSystem.scala:617) at akka.actor.ActorSystemImpl.start(ActorSystem.scala:634) at akka.actor.ActorSystem$.apply(ActorSystem.scala:142) at akka.actor.ActorSystem$.apply(ActorSystem.scala:119) at org.apache.spark.util.AkkaUtils$.org$apache$spark$util$AkkaUtils$$doCreateActorSystem(AkkaUtils.scala:121) at org.apache.spark.util.AkkaUtils$$anonfun$1.apply(AkkaUtils.scala:53) at org.apache.spark.util.AkkaUtils$$anonfun$1.apply(AkkaUtils.scala:52) at org.apache.spark.util.Utils$$anonfun$startServiceOnPort$1.apply$mcVI$sp(Utils.scala:1964) at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:141) at org.apache.spark.util.Utils$.startServiceOnPort(Utils.scala:1955) at org.apache.spark.util.AkkaUtils$.createActorSystem(AkkaUtils.scala:55) at org.apache.spark.SparkEnv$.create(SparkEnv.scala:266) at org.apache.spark.SparkEnv$.createDriverEnv(SparkEnv.scala:193) at org.apache.spark.SparkContext.createSparkEnv(SparkContext.scala:288) at org.apache.spark.SparkContext.<init>(SparkContext.scala:457) at com.sdl.nntrainer.NNTrainer$.main(NNTrainer.scala:418) at com.sdl.nntrainer.NNTrainer.main(NNTrainer.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731) at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181) at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206) at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121) at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala) 16/07/17 00:04:22 INFO RemoteActorRefProvider$RemotingTerminator: Shutting down remote daemon. 16/07/17 00:04:22 INFO SparkContext: Successfully stopped SparkContext Exception in thread "main" java.util.concurrent.TimeoutException: Futures timed out after [10000 milliseconds] at scala.concurrent.impl.Promise$DefaultPromise.ready(Promise.scala:219) at scala.concurrent.impl.Promise$DefaultPromise.result(Promise.scala:223) at scala.concurrent.Await$$anonfun$result$1.apply(package.scala:107) at scala.concurrent.BlockContext$DefaultBlockContext$.blockOn(BlockContext.scala:53) at scala.concurrent.Await$.result(package.scala:107) at akka.remote.Remoting.start(Remoting.scala:179) at akka.remote.RemoteActorRefProvider.init(RemoteActorRefProvider.scala:184) at akka.actor.ActorSystemImpl.liftedTree2$1(ActorSystem.scala:620) at akka.actor.ActorSystemImpl._start$lzycompute(ActorSystem.scala:617) at akka.actor.ActorSystemImpl._start(ActorSystem.scala:617) at akka.actor.ActorSystemImpl.start(ActorSystem.scala:634) at akka.actor.ActorSystem$.apply(ActorSystem.scala:142) at akka.actor.ActorSystem$.apply(ActorSystem.scala:119) at org.apache.spark.util.AkkaUtils$.org$apache$spark$util$AkkaUtils$$doCreateActorSystem(AkkaUtils.scala:121) at org.apache.spark.util.AkkaUtils$$anonfun$1.apply(AkkaUtils.scala:53) at org.apache.spark.util.AkkaUtils$$anonfun$1.apply(AkkaUtils.scala:52) at org.apache.spark.util.Utils$$anonfun$startServiceOnPort$1.apply$mcVI$sp(Utils.scala:1964) at scala.collection.immutable.Range.foreach$mVc$sp(Range.scala:141) at org.apache.spark.util.Utils$.startServiceOnPort(Utils.scala:1955) at org.apache.spark.util.AkkaUtils$.createActorSystem(AkkaUtils.scala:55) at org.apache.spark.SparkEnv$.create(SparkEnv.scala:266) at org.apache.spark.SparkEnv$.createDriverEnv(SparkEnv.scala:193) at org.apache.spark.SparkContext.createSparkEnv(SparkContext.scala:288) at org.apache.spark.SparkContext.<init>(SparkContext.scala:457) at com.sdl.nntrainer.NNTrainer$.main(NNTrainer.scala:418) at com.sdl.nntrainer.NNTrainer.main(NNTrainer.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731) at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181) at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206) at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121) at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala) [http://dr0muzwhcp26z.cloudfront.net/static/corporate/SDL-logo-2014.png] <www.sdl.com/> www.sdl.com SDL PLC confidential, all rights reserved. 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