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From "Colin Breame (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-5773) Cannot cast scala.util.Failure to org.apache.flink.runtime.messages.Acknowledge
Date Fri, 10 Feb 2017 11:51:41 GMT
Colin Breame created FLINK-5773:
-----------------------------------

             Summary: Cannot cast scala.util.Failure to org.apache.flink.runtime.messages.Acknowledge
                 Key: FLINK-5773
                 URL: https://issues.apache.org/jira/browse/FLINK-5773
             Project: Flink
          Issue Type: Bug
          Components: DataStream API
    Affects Versions: 1.2.0
            Reporter: Colin Breame


The exception below happens when I set the StreamExecutionEnvironment.setMaxParallelism()
to anything less than 4.

Let me know if you need more information.

{code}
Caused by: java.lang.ClassCastException: Cannot cast scala.util.Failure to org.apache.flink.runtime.messages.Acknowledge
	at java.lang.Class.cast(Class.java:3369)
	at scala.concurrent.Future$$anonfun$mapTo$1.apply(Future.scala:405)
	at scala.util.Success$$anonfun$map$1.apply(Try.scala:206)
	at scala.util.Try$.apply(Try.scala:161)
	at scala.util.Success.map(Try.scala:206)
	at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235)
	at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235)
	at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)
	at scala.concurrent.Future$InternalCallbackExecutor$Batch$$anonfun$run$1.processBatch$1(Future.scala:643)
	at scala.concurrent.Future$InternalCallbackExecutor$Batch$$anonfun$run$1.apply$mcV$sp(Future.scala:658)
	at scala.concurrent.Future$InternalCallbackExecutor$Batch$$anonfun$run$1.apply(Future.scala:635)
	at scala.concurrent.Future$InternalCallbackExecutor$Batch$$anonfun$run$1.apply(Future.scala:635)
	at scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:72)
	at scala.concurrent.Future$InternalCallbackExecutor$Batch.run(Future.scala:634)
	at scala.concurrent.Future$InternalCallbackExecutor$.scala$concurrent$Future$InternalCallbackExecutor$$unbatchedExecute(Future.scala:694)
	at scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:685)
	at scala.concurrent.impl.CallbackRunnable.executeWithValue(Promise.scala:40)
	at scala.concurrent.impl.Promise$DefaultPromise.tryComplete(Promise.scala:248)
	at akka.pattern.PromiseActorRef.$bang(AskSupport.scala:266)
	at org.apache.flink.runtime.taskmanager.TaskManager.submitTask(TaskManager.scala:1206)
	at org.apache.flink.runtime.taskmanager.TaskManager.org$apache$flink$runtime$taskmanager$TaskManager$$handleTaskMessage(TaskManager.scala:458)
	at org.apache.flink.runtime.taskmanager.TaskManager$$anonfun$handleMessage$1.applyOrElse(TaskManager.scala:280)
	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
	at org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:36)
	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
	at scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
	at org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33)
	at org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28)
	at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
	at org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28)
	at akka.actor.Actor$class.aroundReceive(Actor.scala:467)
	at org.apache.flink.runtime.taskmanager.TaskManager.aroundReceive(TaskManager.scala:122)
	at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
	at akka.actor.ActorCell.invoke(ActorCell.scala:487)
	at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238)
	at akka.dispatch.Mailbox.run(Mailbox.scala:220)
	... 5 more
{code}



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