Hi to all, I'm restarting the discussion about a problem I alredy dicussed on this mailing list (but that started with a different subject). I'm running Flink 0.9.0 on CDH 5.1.3 so I compiled the sources as:
mvn clean install -Dhadoop.version=2.3.0-cdh5.1.3 -Dhbase.version=0.98.1-cdh5.1.3 -Dhadoop.core.version=2.3.0-mr1-cdh5.1.3 -DskipTests -Pvendor-repos The problem I'm facing is that the cluster start successfully but when I run my job (from the web-client) I get, after some time, this exception: 16:35:41,636 WARN akka.remote.RemoteWatcher - Detected unreachable: [akka.tcp://flink@192.168.234.83:6123] 16:35:46,605 INFO org.apache.flink.runtime.taskmanager.TaskManager - Disconnecting from JobManager: JobManager is no longer reachable 16:35:46,614 INFO org.apache.flink.runtime.taskmanager.TaskManager - Cancelling all computations and discarding all cached data. 16:35:46,644 INFO org.apache.flink.runtime.taskmanager.Task - Attempting to fail task externally CHAIN GroupReduce (GroupReduce at compactDataSources(MyClass.java:213)) -> Combine(Distinct at compactDataSources(MyClass.java:213)) (8/36) 16:35:46,669 INFO org.apache.flink.runtime.taskmanager.Task - CHAIN GroupReduce (GroupReduce at compactDataSources(MyClass.java:213)) -> Combine(Distinct at compactDataSources(MyClass.java:213)) (8/36) switched to FAILED with exception. java.lang.Exception: Disconnecting from JobManager: JobManager is no longer reachable at org.apache.flink.runtime.taskmanager.TaskManager.org $apache$flink$runtime$taskmanager$TaskManager$$handleJobManagerDisconnect(TaskManager.scala:741) at org.apache.flink.runtime.taskmanager.TaskManager$$anonfun$receiveWithLogMessages$1.applyOrElse(TaskManager.scala:267) at scala.runtime.AbstractPartialFunction$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.flink.runtime.ActorLogMessages$$anon$1.apply(ActorLogMessages.scala:36) at org.apache.flink.runtime.ActorLogMessages$$anon$1.apply(ActorLogMessages.scala:29) at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118) at org.apache.flink.runtime.ActorLogMessages$$anon$1.applyOrElse(ActorLogMessages.scala:29) at akka.actor.Actor$class.aroundReceive(Actor.scala:465) at org.apache.flink.runtime.taskmanager.TaskManager.aroundReceive(TaskManager.scala:114) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) at akka.actor.dungeon.DeathWatch$class.receivedTerminated(DeathWatch.scala:46) at akka.actor.ActorCell.receivedTerminated(ActorCell.scala:369) at akka.actor.ActorCell.autoReceiveMessage(ActorCell.scala:501) at akka.actor.ActorCell.invoke(ActorCell.scala:486) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254) at akka.dispatch.Mailbox.run(Mailbox.scala:221) at akka.dispatch.Mailbox.exec(Mailbox.scala:231) at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.pollAndExecAll(ForkJoinPool.java:1253) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1346) at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) 16:35:46,767 INFO org.apache.flink.runtime.taskmanager.Task - Triggering cancellation of task code CHAIN GroupReduce (GroupReduce at compactDataSources(MyClass.java:213)) -> Combine(Distinct at compactDataSources(MyClass.java:213)) (8/36) (57a0ad78726d5ba7255aa87038250c51). The job instead runs correctly from the IDE (Eclipse). How can I understand/debug what's wrong? Best, Flavio