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https://issues.apache.org/jira/browse/SPARK-18820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shixiong Zhu resolved SPARK-18820.
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Resolution: Duplicate
> 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? If so can I make a pr? I think driver should send "LaunchTask"
> after "RegisteredExecutor" is already received.
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