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https://issues.apache.org/jira/browse/SPARK-14455?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Or resolved SPARK-14455.
-------------------------------
Resolution: Fixed
Assignee: Saisai Shao
Fix Version/s: 2.0.0
Target Version/s: 2.0.0
> ReceiverTracker#allocatedExecutors throw NPE for receiver-less streaming
> application
> ------------------------------------------------------------------------------------
>
> Key: SPARK-14455
> URL: https://issues.apache.org/jira/browse/SPARK-14455
> Project: Spark
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 2.0.0
> Reporter: Saisai Shao
> Assignee: Saisai Shao
> Fix For: 2.0.0
>
>
> When testing streaming dynamic allocation with direct Kafka, streaming
> {{ExecutorAllocationManager}} throws NPE which is due to {{ReceiverTracker}}
> not start, it will happen when running receiver-less streaming application
> like direct Kafka. Here is the exception log:
> {noformat}
> Exception in thread "RecurringTimer - streaming-executor-allocation-manager"
> java.lang.NullPointerException
> at
> org.apache.spark.streaming.scheduler.ReceiverTracker.allocatedExecutors(ReceiverTracker.scala:244)
> at
> org.apache.spark.streaming.scheduler.ExecutorAllocationManager.killExecutor(ExecutorAllocationManager.scala:124)
> at
> org.apache.spark.streaming.scheduler.ExecutorAllocationManager.org$apache$spark$streaming$scheduler$ExecutorAllocationManager$$manageAllocation(ExecutorAllocationManager.scala:100)
> at
> org.apache.spark.streaming.scheduler.ExecutorAllocationManager$$anonfun$1.apply$mcVJ$sp(ExecutorAllocationManager.scala:66)
> at
> org.apache.spark.streaming.util.RecurringTimer.triggerActionForNextInterval(RecurringTimer.scala:94)
> at
> org.apache.spark.streaming.util.RecurringTimer.org$apache$spark$streaming$util$RecurringTimer$$loop(RecurringTimer.scala:106)
> at
> org.apache.spark.streaming.util.RecurringTimer$$anon$1.run(RecurringTimer.scala:29)
> {noformat}
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