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https://issues.apache.org/jira/browse/SPARK-4986?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14291349#comment-14291349
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Jesper Lundgren commented on SPARK-4986:
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[~srowen] The current patch I have does not address this issue, but looking at
the code I think a check for eventActor == null might do the trick.
" // eventActor is created when generator starts.
// This not being null means the scheduler has been started and not stopped
private var eventActor: ActorRef = null
"
> Graceful shutdown for Spark Streaming does not work in Standalone cluster mode
> ------------------------------------------------------------------------------
>
> Key: SPARK-4986
> URL: https://issues.apache.org/jira/browse/SPARK-4986
> Project: Spark
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 1.2.0
> Reporter: Jesper Lundgren
> Fix For: 1.3.0, 1.2.1
>
>
> When using the graceful stop API of Spark Streaming in Spark Standalone
> cluster the stop signal never reaches the receivers. I have tested this with
> Spark 1.2 and Kafka receivers.
> ReceiverTracker will send StopReceiver message to ReceiverSupervisorImpl.
> In local mode ReceiverSupervisorImpl receives this message but in Standalone
> cluster mode the message seems to be lost.
> (I have modified the code to send my own string message as a stop signal from
> ReceiverTracker to ReceiverSupervisorImpl and it works as a workaround.)
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