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https://issues.apache.org/jira/browse/SPARK-12037?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andrew Or resolved SPARK-12037.
-------------------------------
Resolution: Fixed
Assignee: Nan Zhu
Fix Version/s: 1.6.0
Target Version/s: 1.6.0
> Executors use heartbeatReceiverRef to report heartbeats and task metrics that
> might not be initialized and leads to NullPointerException
> ----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-12037
> URL: https://issues.apache.org/jira/browse/SPARK-12037
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.6.0
> Environment: The latest sources at revision {{c793d2d}}
> Reporter: Jacek Laskowski
> Assignee: Nan Zhu
> Fix For: 1.6.0
>
>
> When {{Executor}} starts it starts driver heartbeater (using
> {{startDriverHeartbeater()}}) that uses {{heartbeatReceiverRef}} that is
> initialized later and there is a possibility of NullPointerException (after
> {{spark.executor.heartbeatInterval}} or {{10s}}).
> {code}
> WARN Executor: Issue communicating with driver in heartbeater
> java.lang.NullPointerException
> at
> org.apache.spark.executor.Executor.org$apache$spark$executor$Executor$$reportHeartBeat(Executor.scala:447)
> at
> org.apache.spark.executor.Executor$$anon$1$$anonfun$run$1.apply$mcV$sp(Executor.scala:467)
> at
> org.apache.spark.executor.Executor$$anon$1$$anonfun$run$1.apply(Executor.scala:467)
> at
> org.apache.spark.executor.Executor$$anon$1$$anonfun$run$1.apply(Executor.scala:467)
> at org.apache.spark.util.Utils$.logUncaughtExceptions(Utils.scala:1717)
> at org.apache.spark.executor.Executor$$anon$1.run(Executor.scala:467)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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