[ https://issues.apache.org/jira/browse/SPARK-17816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shixiong Zhu resolved SPARK-17816. ---------------------------------- Resolution: Fixed Assignee: Ergin Seyfe Fix Version/s: 2.1.0 > Json serialzation of accumulators are failing with > ConcurrentModificationException > ---------------------------------------------------------------------------------- > > Key: SPARK-17816 > URL: https://issues.apache.org/jira/browse/SPARK-17816 > Project: Spark > Issue Type: Bug > Components: Spark Core > Affects Versions: 2.1.0 > Reporter: Ergin Seyfe > Assignee: Ergin Seyfe > Fix For: 2.1.0 > > > This is the stack trace: See {{ConcurrentModificationException}}: > {code} > java.util.ConcurrentModificationException > at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901) > at java.util.ArrayList$Itr.next(ArrayList.java:851) > at scala.collection.convert.Wrappers$JIteratorWrapper.next(Wrappers.scala:43) > at scala.collection.Iterator$class.foreach(Iterator.scala:893) > at scala.collection.AbstractIterator.foreach(Iterator.scala:1336) > at scala.collection.IterableLike$class.foreach(IterableLike.scala:72) > at scala.collection.AbstractIterable.foreach(Iterable.scala:54) > at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:59) > at scala.collection.mutable.ListBuffer.$plus$plus$eq(ListBuffer.scala:183) > at scala.collection.mutable.ListBuffer.$plus$plus$eq(ListBuffer.scala:45) > at scala.collection.TraversableLike$class.to(TraversableLike.scala:590) > at scala.collection.AbstractTraversable.to(Traversable.scala:104) > at scala.collection.TraversableOnce$class.toList(TraversableOnce.scala:294) > at scala.collection.AbstractTraversable.toList(Traversable.scala:104) > at > org.apache.spark.util.JsonProtocol$.accumValueToJson(JsonProtocol.scala:314) > at > org.apache.spark.util.JsonProtocol$$anonfun$accumulableInfoToJson$5.apply(JsonProtocol.scala:291) > at > org.apache.spark.util.JsonProtocol$$anonfun$accumulableInfoToJson$5.apply(JsonProtocol.scala:291) > at scala.Option.map(Option.scala:146) > at > org.apache.spark.util.JsonProtocol$.accumulableInfoToJson(JsonProtocol.scala:291) > at > org.apache.spark.util.JsonProtocol$$anonfun$taskInfoToJson$12.apply(JsonProtocol.scala:283) > at > org.apache.spark.util.JsonProtocol$$anonfun$taskInfoToJson$12.apply(JsonProtocol.scala:283) > at > scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) > at > scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) > at scala.collection.immutable.List.foreach(List.scala:381) > at > scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:35) > at scala.collection.mutable.ListBuffer.foreach(ListBuffer.scala:45) > at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) > at scala.collection.AbstractTraversable.map(Traversable.scala:104) > at org.apache.spark.util.JsonProtocol$.taskInfoToJson(JsonProtocol.scala:283) > at org.apache.spark.util.JsonProtocol$.taskEndToJson(JsonProtocol.scala:145) > at org.apache.spark.util.JsonProtocol$.sparkEventToJson(JsonProtocol.scala:76) > at > org.apache.spark.scheduler.EventLoggingListener.logEvent(EventLoggingListener.scala:137) > at > org.apache.spark.scheduler.EventLoggingListener.onTaskEnd(EventLoggingListener.scala:157) > at > org.apache.spark.scheduler.SparkListenerBus$class.doPostEvent(SparkListenerBus.scala:45) > at > org.apache.spark.scheduler.LiveListenerBus.doPostEvent(LiveListenerBus.scala:35) > at > org.apache.spark.scheduler.LiveListenerBus.doPostEvent(LiveListenerBus.scala:35) > at org.apache.spark.util.ListenerBus$class.postToAll(ListenerBus.scala:63) > at > org.apache.spark.scheduler.LiveListenerBus.postToAll(LiveListenerBus.scala:35) > at > org.apache.spark.scheduler.LiveListenerBus$$anon$1$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(LiveListenerBus.scala:81) > at > org.apache.spark.scheduler.LiveListenerBus$$anon$1$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(LiveListenerBus.scala:66) > at > org.apache.spark.scheduler.LiveListenerBus$$anon$1$$anonfun$run$1$$anonfun$apply$mcV$sp$1.apply(LiveListenerBus.scala:66) > at scala.util.DynamicVariable.withValue(DynamicVariable.scala:58) > at > org.apache.spark.scheduler.LiveListenerBus$$anon$1$$anonfun$run$1.apply$mcV$sp(LiveListenerBus.scala:65) > at org.apache.spark.util.Utils$.tryOrStopSparkContext(Utils.scala:1244) > at > org.apache.spark.scheduler.LiveListenerBus$$anon$1.run(LiveListenerBus.scala:64) > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org