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https://issues.apache.org/jira/browse/SPARK-12339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15836463#comment-15836463
]
Shashank Mandil commented on SPARK-12339:
-----------------------------------------
[~andrewor14] Just checked this also affects 1.6
https://github.com/apache/spark/blob/branch-1.6/sql/core/src/main/scala/org/apache/spark/sql/execution/ui/SQLListener.scala#L139
> NullPointerException on stage kill from web UI
> ----------------------------------------------
>
> Key: SPARK-12339
> URL: https://issues.apache.org/jira/browse/SPARK-12339
> Project: Spark
> Issue Type: Bug
> Components: Web UI
> Affects Versions: 2.0.0
> Reporter: Jacek Laskowski
> Assignee: Alex Bozarth
> Fix For: 2.0.0
>
>
> The following message is in the logs after killing a stage:
> {code}
> scala> INFO Executor: Executor killed task 1.0 in stage 7.0 (TID 33)
> INFO Executor: Executor killed task 0.0 in stage 7.0 (TID 32)
> WARN TaskSetManager: Lost task 1.0 in stage 7.0 (TID 33, localhost):
> TaskKilled (killed intentionally)
> WARN TaskSetManager: Lost task 0.0 in stage 7.0 (TID 32, localhost):
> TaskKilled (killed intentionally)
> INFO TaskSchedulerImpl: Removed TaskSet 7.0, whose tasks have all completed,
> from pool
> ERROR LiveListenerBus: Listener SQLListener threw an exception
> java.lang.NullPointerException
> at
> org.apache.spark.sql.execution.ui.SQLListener.onTaskEnd(SQLListener.scala:167)
> at
> org.apache.spark.scheduler.SparkListenerBus$class.onPostEvent(SparkListenerBus.scala:42)
> at
> org.apache.spark.scheduler.LiveListenerBus.onPostEvent(LiveListenerBus.scala:31)
> at
> org.apache.spark.scheduler.LiveListenerBus.onPostEvent(LiveListenerBus.scala:31)
> at
> org.apache.spark.util.ListenerBus$class.postToAll(ListenerBus.scala:55)
> at
> org.apache.spark.util.AsynchronousListenerBus.postToAll(AsynchronousListenerBus.scala:37)
> at
> org.apache.spark.util.AsynchronousListenerBus$$anon$1$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(AsynchronousListenerBus.scala:80)
> at
> org.apache.spark.util.AsynchronousListenerBus$$anon$1$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(AsynchronousListenerBus.scala:65)
> at
> org.apache.spark.util.AsynchronousListenerBus$$anon$1$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(AsynchronousListenerBus.scala:65)
> at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)
> at
> org.apache.spark.util.AsynchronousListenerBus$$anon$1$$anonfun$run$1.apply$mcV$sp(AsynchronousListenerBus.scala:64)
> at org.apache.spark.util.Utils$.tryOrStopSparkContext(Utils.scala:1169)
> at
> org.apache.spark.util.AsynchronousListenerBus$$anon$1.run(AsynchronousListenerBus.scala:63)
> ERROR LiveListenerBus: Listener SQLListener threw an exception
> java.lang.NullPointerException
> at
> org.apache.spark.sql.execution.ui.SQLListener.onTaskEnd(SQLListener.scala:167)
> at
> org.apache.spark.scheduler.SparkListenerBus$class.onPostEvent(SparkListenerBus.scala:42)
> at
> org.apache.spark.scheduler.LiveListenerBus.onPostEvent(LiveListenerBus.scala:31)
> at
> org.apache.spark.scheduler.LiveListenerBus.onPostEvent(LiveListenerBus.scala:31)
> at
> org.apache.spark.util.ListenerBus$class.postToAll(ListenerBus.scala:55)
> at
> org.apache.spark.util.AsynchronousListenerBus.postToAll(AsynchronousListenerBus.scala:37)
> at
> org.apache.spark.util.AsynchronousListenerBus$$anon$1$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(AsynchronousListenerBus.scala:80)
> at
> org.apache.spark.util.AsynchronousListenerBus$$anon$1$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(AsynchronousListenerBus.scala:65)
> at
> org.apache.spark.util.AsynchronousListenerBus$$anon$1$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(AsynchronousListenerBus.scala:65)
> at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58)
> at
> org.apache.spark.util.AsynchronousListenerBus$$anon$1$$anonfun$run$1.apply$mcV$sp(AsynchronousListenerBus.scala:64)
> at org.apache.spark.util.Utils$.tryOrStopSparkContext(Utils.scala:1169)
> at
> org.apache.spark.util.AsynchronousListenerBus$$anon$1.run(AsynchronousListenerBus.scala:63)
> {code}
> To reproduce, start a job and kill the stage from web UI, e.g.:
> {code}
> val rdd = sc.parallelize(0 to 9, 2)
> rdd.mapPartitionsWithIndex { case (n, it) => Thread.sleep(10 * 1000); it
> }.count
> {code}
> Go to web UI and in Stages tab click "kill" for the stage.
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