[jira] [Created] (SPARK-18820) Driver may send "LaunchTask" before executor receive "RegisteredExecutor"

["jin xing (JIRA)" <ji...@apache.org>]

jin xing created SPARK-18820:
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             Summary: Driver may send "LaunchTask" before executor receive "RegisteredExecutor"
                 Key: SPARK-18820
                 URL: https://issues.apache.org/jira/browse/SPARK-18820
             Project: Spark
          Issue Type: Bug
          Components: Scheduler
    Affects Versions: 1.6.3
         Environment: spark-1.6.3
            Reporter: jin xing


CoarseGrainedSchedulerBackend will update executorDataMap after receiving "RegisterExecutor", thus task scheduler may assign tasks on to this executor;
If LaunchTask arrives at CoarseGrainedExecutorBackend before RegisteredExecutor, it will result in NullPointerException and executor backend will exit;
Is it a bug? I think driver should send "LaunchTask" after "RegisteredExecutor" is already received.



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