Github user rmetzger commented on the pull request:
https://github.com/apache/flink/pull/317#issuecomment-72313219
Hi,
maybe thats a helpful datapoint for you:
I have a Flink cluster started where all TaskManagers died
(misconfiguration). The JobManager needs more than 200 seconds to realize that
(on the TaskManagers overview, you see timeouts < 200). When submitting a job,
you'll get the following exception:
```
org.apache.flink.client.program.ProgramInvocationException: The program
execution failed: java.lang.Exception: Failed to deploy the task CHAIN
DataSource (Generator: class io.airlift.tpch.NationGenerator) -> Map (Map at
writeAsFormattedText(DataSet.java:1132)) (1/1) - execution #0 to slot SubSlot 0
(f8d11026ec5a11f0b273184c74ec4f29 (0) - ALLOCATED/ALIVE):
java.lang.NullPointerException
at
org.apache.flink.runtime.taskmanager.TaskManager.org$apache$flink$runtime$taskmanager$TaskManager$$submitTask(TaskManager.scala:346)
at
org.apache.flink.runtime.taskmanager.TaskManager$$anonfun$receiveWithLogMessages$1.applyOrElse(TaskManager.scala:248)
at
scala.runtime.AbstractPartialFunction$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.yarn.YarnTaskManager$$anonfun$receiveYarnMessages$1.applyOrElse(YarnTaskManager.scala:32)
at scala.PartialFunction$OrElse.apply(PartialFunction.scala:162)
at
org.apache.flink.runtime.ActorLogMessages$$anon$1.apply(ActorLogMessages.scala:41)
at
org.apache.flink.runtime.ActorLogMessages$$anon$1.apply(ActorLogMessages.scala:27)
at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
at
org.apache.flink.runtime.ActorLogMessages$$anon$1.applyOrElse(ActorLogMessages.scala:27)
at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
at
org.apache.flink.runtime.taskmanager.TaskManager.aroundReceive(TaskManager.scala:78)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
at akka.actor.ActorCell.invoke(ActorCell.scala:487)
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.runTask(ForkJoinPool.java:1339)
at
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
at
org.apache.flink.runtime.executiongraph.Execution$2.onComplete(Execution.java:311)
at akka.dispatch.OnComplete.internal(Future.scala:247)
at akka.dispatch.OnComplete.internal(Future.scala:244)
at akka.dispatch.japi$CallbackBridge.apply(Future.scala:174)
at akka.dispatch.japi$CallbackBridge.apply(Future.scala:171)
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)
at org.apache.flink.client.program.Client.run(Client.java:345)
at org.apache.flink.client.program.Client.run(Client.java:304)
at org.apache.flink.client.program.Client.run(Client.java:298)
at
org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:55)
at flink.generators.programs.TPCHGenerator.main(TPCHGenerator.java:80)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:437)
at
org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:353)
at org.apache.flink.client.program.Client.run(Client.java:250)
at
org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:389)
at org.apache.flink.client.CliFrontend.run(CliFrontend.java:358)
at
org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1068)
at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1092)
```
I think a NPE is never desired. Does this pull request cover this case?
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