[jira] [Created] (FLINK-6682) Improve error message in case parallelism exceeds maxParallelism

["Chesnay Schepler (JIRA)" <ji...@apache.org>]

Chesnay Schepler created FLINK-6682:
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             Summary: Improve error message in case parallelism exceeds maxParallelism
                 Key: FLINK-6682
                 URL: https://issues.apache.org/jira/browse/FLINK-6682
             Project: Flink
          Issue Type: Improvement
          Components: State Backends, Checkpointing
    Affects Versions: 1.3.0, 1.4.0
            Reporter: Chesnay Schepler


When restoring a job with a parallelism that exceeds the maxParallelism we're not providing a useful error message, as all you get is an IllegalArgumentException:

{code}
Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed
        at org.apache.flink.runtime.client.JobClient.awaitJobResult(JobClient.java:343)
        at org.apache.flink.runtime.client.JobClient.submitJobAndWait(JobClient.java:396)
        at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:467)
        ... 22 more
Caused by: java.lang.IllegalArgumentException
        at org.apache.flink.util.Preconditions.checkArgument(Preconditions.java:123)
        at org.apache.flink.runtime.checkpoint.StateAssignmentOperation.createKeyGroupPartitions(StateAssignmentOperation.java:449)
        at org.apache.flink.runtime.checkpoint.StateAssignmentOperation.assignAttemptState(StateAssignmentOperation.java:117)
        at org.apache.flink.runtime.checkpoint.StateAssignmentOperation.assignStates(StateAssignmentOperation.java:102)
        at org.apache.flink.runtime.checkpoint.CheckpointCoordinator.restoreLatestCheckpointedState(CheckpointCoordinator.java:1038)
        at org.apache.flink.runtime.checkpoint.CheckpointCoordinator.restoreSavepoint(CheckpointCoordinator.java:1101)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$org$apache$flink$runtime$jobmanager$JobManager$$submitJob$1.apply$mcV$sp(JobManager.scala:1386)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$org$apache$flink$runtime$jobmanager$JobManager$$submitJob$1.apply(JobManager.scala:1372)
        at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$org$apache$flink$runtime$jobmanager$JobManager$$submitJob$1.apply(JobManager.scala:1372)
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
        at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:40)
        at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

{code}



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