GitHub user wukaishanda08 opened an issue:
https://github.com/apache/incubator-predictionio/issues/329
Cannot call methods on a stopped SparkContext
I build,train,deploy the engine successfully. But when I run the query
command, an exception occured.
The template I used is PredictionIO-Churn-Prediction-H2O-Sparkling-Water,
which can be got on
https://github.com/andrewwuan/PredictionIO-Churn-Prediction-H2O-Sparkling-Water
But when I used the quick-start recommendation template, all processes can
run normally.
The query command is
`curl -k -H "Content-Type: application/json" -d '{ 'intlPlan': True,
'voiceMailPlan': True,'numVmailMsg': 41, 'totalDayMins': 173.1,'totalDayCalls':
85, 'totalDayCharge': 29.43,'totalEveMins': 203.9, 'totalEveCalls':
107,'totalEveCharge': 17.33, 'totalNightMins': 122.2, 'totalNightCalls': 78,
'totalNightCharge': 14.02,'totalIntlMins': 10.0,'totalIntlCalls': 15,
'totalIntlCharge': 3.94, 'customerServiceCalls': 0}'
https://localhost:8150/queries.json`
and the exception log is
`Stack Trace:
java.lang.IllegalStateException: Cannot call methods on a stopped
SparkContext
at
org.apache.spark.SparkContext.org$apache$spark$SparkContext$$assertNotStopped(SparkContext.scala:104)
at
org.apache.spark.SparkContext.defaultParallelism(SparkContext.scala:2061)
at
org.apache.spark.SparkContext.parallelize$default$2(SparkContext.scala:723)
at Algorithm.predict(Algorithm.scala:56)
at Algorithm.predict(Algorithm.scala:9)
at
io.prediction.controller.P2LAlgorithm.predictBase(P2LAlgorithm.scala:70)
at
io.prediction.workflow.ServerActor$$anonfun$24$$anonfun$25.apply(CreateServer.scala:536)
at
io.prediction.workflow.ServerActor$$anonfun$24$$anonfun$25.apply(CreateServer.scala:535)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at
scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.immutable.List.foreach(List.scala:318)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
at scala.collection.AbstractTraversable.map(Traversable.scala:105)
at
io.prediction.workflow.ServerActor$$anonfun$24.apply(CreateServer.scala:535)
at
io.prediction.workflow.ServerActor$$anonfun$24.apply(CreateServer.scala:513)
at
spray.routing.ApplyConverterInstances$$anon$22$$anonfun$apply$1.apply(ApplyConverterInstances.scala:25)
at
spray.routing.ApplyConverterInstances$$anon$22$$anonfun$apply$1.apply(ApplyConverterInstances.scala:24)
at
spray.routing.ConjunctionMagnet$$anon$1$$anon$2$$anonfun$happly$1$$anonfun$apply$1.apply(Directive.scala:38)
at
spray.routing.ConjunctionMagnet$$anon$1$$anon$2$$anonfun$happly$1$$anonfun$apply$1.apply(Directive.scala:37)
at
spray.routing.directives.BasicDirectives$$anon$1.happly(BasicDirectives.scala:26)
at
spray.routing.ConjunctionMagnet$$anon$1$$anon$2$$anonfun$happly$1.apply(Directive.scala:37)
at
spray.routing.ConjunctionMagnet$$anon$1$$anon$2$$anonfun$happly$1.apply(Directive.scala:36)
at
spray.routing.directives.BasicDirectives$$anon$2.happly(BasicDirectives.scala:79)
at
spray.routing.Directive$$anon$7$$anonfun$happly$4.apply(Directive.scala:86)
at
spray.routing.Directive$$anon$7$$anonfun$happly$4.apply(Directive.scala:86)
at
spray.routing.directives.BasicDirectives$$anon$3$$anonfun$happly$1.apply(BasicDirectives.scala:92)
at
spray.routing.directives.BasicDirectives$$anon$3$$anonfun$happly$1.apply(BasicDirectives.scala:92)
at
spray.routing.directives.ExecutionDirectives$$anonfun$detach$1$$anonfun$apply$7$$anonfun$apply$3.apply$mcV$sp(ExecutionDirectives.scala:89)
at
spray.routing.directives.ExecutionDirectives$$anonfun$detach$1$$anonfun$apply$7$$anonfun$apply$3.apply(ExecutionDirectives.scala:89)
at
spray.routing.directives.ExecutionDirectives$$anonfun$detach$1$$anonfun$apply$7$$anonfun$apply$3.apply(ExecutionDirectives.scala:89)
at
scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at
scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
at
scala.concurrent.impl.ExecutionContextImpl$$anon$3.exec(ExecutionContextImpl.scala:107)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)`
Is there anybody knows how to solve this? Thanks a lot!
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