Flink Job Exception

[Govindarajan Srinivasaraghavan]

Hi All,

I'm trying to run a streaming job with flink 1.2 version and there are 3
task managers with 12 task slots. Irrespective of the parallelism that I
give it always fails with the below error and I found a JIRA link
corresponding to this issue. Can I know by when this will be resolved since
I'm not able to run any job in my current environment. Thanks.

https://issues.apache.org/jira/browse/FLINK-5773

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$1.apply(Try.scala:237)
        at scala.util.Try$.apply(Try.scala:192)
        at scala.util.Success.map(Try.scala:237)
        at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235)
        at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235)
        at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)
        at 
scala.concurrent.BatchingExecutor$Batch$$anonfun$run$1.processBatch$1(BatchingExecutor.scala:63)
        at 
scala.concurrent.BatchingExecutor$Batch$$anonfun$run$1.apply$mcV$sp(BatchingExecutor.scala:78)
        at 
scala.concurrent.BatchingExecutor$Batch$$anonfun$run$1.apply(BatchingExecutor.scala:55)
        at 
scala.concurrent.BatchingExecutor$Batch$$anonfun$run$1.apply(BatchingExecutor.scala:55)
        at 
scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:72)
        at 
scala.concurrent.BatchingExecutor$Batch.run(BatchingExecutor.scala:54)
        at 
scala.concurrent.Future$InternalCallbackExecutor$.unbatchedExecute(Future.scala:599)
        at 
scala.concurrent.BatchingExecutor$class.execute(BatchingExecutor.scala:106)
        at 
scala.concurrent.Future$InternalCallbackExecutor$.execute(Future.scala:597)
        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 akka.remote.DefaultMessageDispatcher.dispatch(Endpoint.scala:89)
        at 
akka.remote.EndpointReader$$anonfun$receive$2.applyOrElse(Endpoint.scala:967)
        at akka.actor.Actor$class.aroundReceive(Actor.scala:467)
        at akka.remote.EndpointActor.aroundReceive(Endpoint.scala:437)
        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)
        at 
akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:397)
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at 
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
        at 
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at 
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)