What is your cluster configuration? Did you try looking at the Web UI? There are many tips here
http://spark.apache.org/docs/1.2.0/tuning.html Did you try these? On Fri, Feb 13, 2015 at 12:09 AM, Manas Kar <manasdebashis...@gmail.com> wrote: > Hi, > I have a Hidden Markov Model running with 200MB data. > Once the program finishes (i.e. all stages/jobs are done) the program > hangs for 20 minutes or so before killing master. > > In the spark master the following log appears. > > 2015-02-12 13:00:05,035 ERROR akka.actor.ActorSystemImpl: Uncaught fatal > error from thread [sparkMaster-akka.actor.default-dispatcher-31] shutting > down ActorSystem [sparkMaster] > java.lang.OutOfMemoryError: GC overhead limit exceeded > at scala.collection.immutable.List$.newBuilder(List.scala:396) > at > scala.collection.generic.GenericTraversableTemplate$class.genericBuilder(GenericTraversableTemplate.scala:69) > at > scala.collection.AbstractTraversable.genericBuilder(Traversable.scala:105) > at > scala.collection.generic.GenTraversableFactory$GenericCanBuildFrom.apply(GenTraversableFactory.scala:58) > at > scala.collection.generic.GenTraversableFactory$GenericCanBuildFrom.apply(GenTraversableFactory.scala:53) > at > scala.collection.TraversableLike$class.builder$1(TraversableLike.scala:239) > at > scala.collection.TraversableLike$class.map(TraversableLike.scala:243) > at scala.collection.AbstractTraversable.map(Traversable.scala:105) > at > org.json4s.MonadicJValue$$anonfun$org$json4s$MonadicJValue$$findDirectByName$1.apply(MonadicJValue.scala:26) > at > org.json4s.MonadicJValue$$anonfun$org$json4s$MonadicJValue$$findDirectByName$1.apply(MonadicJValue.scala:22) > at > scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251) > at > scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:251) > at scala.collection.immutable.List.foreach(List.scala:318) > at > scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:251) > at > scala.collection.AbstractTraversable.flatMap(Traversable.scala:105) > at org.json4s.MonadicJValue.org > $json4s$MonadicJValue$$findDirectByName(MonadicJValue.scala:22) > at org.json4s.MonadicJValue.$bslash(MonadicJValue.scala:16) > at > org.apache.spark.util.JsonProtocol$.taskStartFromJson(JsonProtocol.scala:450) > at > org.apache.spark.util.JsonProtocol$.sparkEventFromJson(JsonProtocol.scala:423) > at > org.apache.spark.scheduler.ReplayListenerBus$$anonfun$replay$2$$anonfun$apply$1.apply(ReplayListenerBus.scala:71) > at > org.apache.spark.scheduler.ReplayListenerBus$$anonfun$replay$2$$anonfun$apply$1.apply(ReplayListenerBus.scala:69) > at scala.collection.Iterator$class.foreach(Iterator.scala:727) > at scala.collection.AbstractIterator.foreach(Iterator.scala:1157) > at > org.apache.spark.scheduler.ReplayListenerBus$$anonfun$replay$2.apply(ReplayListenerBus.scala:69) > at > org.apache.spark.scheduler.ReplayListenerBus$$anonfun$replay$2.apply(ReplayListenerBus.scala:55) > at > scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33) > at > scala.collection.mutable.WrappedArray.foreach(WrappedArray.scala:34) > at > org.apache.spark.scheduler.ReplayListenerBus.replay(ReplayListenerBus.scala:55) > at > org.apache.spark.deploy.master.Master.rebuildSparkUI(Master.scala:726) > at > org.apache.spark.deploy.master.Master.removeApplication(Master.scala:675) > at > org.apache.spark.deploy.master.Master.finishApplication(Master.scala:653) > at > org.apache.spark.deploy.master.Master$$anonfun$receiveWithLogging$1$$anonfun$applyOrElse$29.apply(Master.scala:399) > > Can anyone help? > > ..Manas > -- [image: Sigmoid Analytics] <http://htmlsig.com/www.sigmoidanalytics.com> *Arush Kharbanda* || Technical Teamlead ar...@sigmoidanalytics.com || www.sigmoidanalytics.com
