Dear ladies and gentlemen,
I got a problem using Gelly in Flink. Currently I am loading a Virtuoso Graph
into
Flink's Gelly and I want to analyze it for the different paths one can take to
link
the different nodes. Therefore I am using the ScatterGatherIteration.
However, my code just works with about ten to twenty nodes. When I try to upload
a hundred nodes, the following error occurs:
Exception in thread "main"
org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
at
org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$8.apply$mcV$sp(JobManager.scala:822)
at
org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$8.apply(JobManager.scala:768)
at
org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$8.apply(JobManager.scala:768)
at
scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:41)
at
akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:401)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at
scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: java.lang.RuntimeException: Memory ran out. Compaction failed.
numPartitions: 32 minPartition: 1 maxPartition: 431 number of overflow
segments: 0 bucketSize: 251 Overall memory: 45613056 Partition memory: 33685504
Message: null
at
org.apache.flink.runtime.operators.hash.CompactingHashTable.insertRecordIntoPartition(CompactingHashTable.java:457)
at
org.apache.flink.runtime.operators.hash.CompactingHashTable.insertOrReplaceRecord(CompactingHashTable.java:392)
at
org.apache.flink.runtime.iterative.io.SolutionSetUpdateOutputCollector.collect(SolutionSetUpdateOutputCollector.java:54)
at
org.apache.flink.graph.spargel.GatherFunction.setNewVertexValue(GatherFunction.java:123)
at
org.apache.flink.quickstart.PathRank$PathUpdateFunction.updateVertex(PathRank.java:357)
at
org.apache.flink.graph.spargel.ScatterGatherIteration$GatherUdfSimpleVV.coGroup(ScatterGatherIteration.java:389)
at
org.apache.flink.runtime.operators.CoGroupWithSolutionSetSecondDriver.run(CoGroupWithSolutionSetSecondDriver.java:218)
at org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:486)
at
org.apache.flink.runtime.iterative.task.AbstractIterativeTask.run(AbstractIterativeTask.java:146)
at
org.apache.flink.runtime.iterative.task.IterationTailTask.run(IterationTailTask.java:107)
at org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:351)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:584)
at java.lang.Thread.run(Thread.java:745)
I tried to google it a bit, and this problems seems to occur often when using
Gelly. I hope you have any ideas or approaches how I can handle this error.
Thank you in advance!
All the best,
Dennis
