Saisai Shao created SPARK-14455:
-----------------------------------
Summary: 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
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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