Hi everyone, I ran a job this morning on 30 wally nodes. DOP 224. Worked like a charm.
Then, I ran a similar job, on the exact same configuration, on the same input data set. The only difference between them is that the second job computes the degrees per vertex and, for vertices with degree higher than a user-defined threshold, it does a bit of magic(roughly a bunch of coGroups). The problem is that, even before the extra functions get called, I get the following type of exception: 06/19/2015 12:06:43 CHAIN FlatMap (FlatMap at fromDataSet(Graph.java:171)) -> Combine(Distinct at fromDataSet(Graph.java:171))(222/224) switched to FAILED java.lang.IllegalStateException: Update task on instance 29073fb0b0957198a2b67569b042d56b @ wally004 - 8 slots - URL: akka.tcp:// flink@130.149.249.14:44528/user/taskmanager failed due to: at org.apache.flink.runtime.executiongraph.Execution$5.onFailure(Execution.java:860) at akka.dispatch.OnFailure.internal(Future.scala:228) at akka.dispatch.OnFailure.internal(Future.scala:227) at akka.dispatch.japi$CallbackBridge.apply(Future.scala:174) at akka.dispatch.japi$CallbackBridge.apply(Future.scala:171) at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118) at scala.runtime.AbstractPartialFunction.applyOrElse(AbstractPartialFunction.scala:25) at scala.concurrent.Future$$anonfun$onFailure$1.apply(Future.scala:136) at scala.concurrent.Future$$anonfun$onFailure$1.apply(Future.scala:134) at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32) at scala.concurrent.impl.ExecutionContextImpl$$anon$3.exec(ExecutionContextImpl.scala:107) at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) Caused by: akka.pattern.AskTimeoutException: Ask timed out on [Actor[akka.tcp://flink@130.149.249.14:44528/user/taskmanager#82700874]] after [100000 ms] at akka.pattern.PromiseActorRef$$anonfun$1.apply$mcV$sp(AskSupport.scala:333) at akka.actor.Scheduler$$anon$7.run(Scheduler.scala:117) at scala.concurrent.Future$InternalCallbackExecutor$.scala$concurrent$Future$InternalCallbackExecutor$$unbatchedExecute(Future.scala:694) at scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:691) at akka.actor.LightArrayRevolverScheduler$TaskHolder.executeTask(Scheduler.scala:467) at akka.actor.LightArrayRevolverScheduler$$anon$8.executeBucket$1(Scheduler.scala:419) at akka.actor.LightArrayRevolverScheduler$$anon$8.nextTick(Scheduler.scala:423) at akka.actor.LightArrayRevolverScheduler$$anon$8.run(Scheduler.scala:375) at java.lang.Thread.run(Thread.java:722) At first I thought, okay maybe wally004 is down; then I ssh'd into it. Works fine. The full output can be found here: https://gist.github.com/andralungu/d222b75cb33aea57955d Does anyone have any idea about what may have triggered this? :( Thanks! Andra