2048 is the default. So you didn't actually increase the number of buffers ;-)
Try 4096 or so. 2015-02-18 22:59 GMT+01:00 Yiannis Gkoufas <johngou...@gmail.com>: > Hi! > > thank you for your replies! > I increased the number of network buffers: > > taskmanager.network.numberOfBuffers: 2048 > > but I am still getting the same error: > > Insufficient number of network buffers: required 120, but only 2 of 2048 > available. > > Thanks a lot! > > > On 18 February 2015 at 20:27, Fabian Hueske <fhue...@gmail.com> wrote: > >> Hi Yiannis, >> >> if you scale Flink to larger setups you need to adapt the number of >> network buffers. >> The background section of the configuration reference explains the >> details on that [1]. >> >> Let us know, if that helped to solve the problem. >> >> Best, Fabian >> >> [1] http://flink.apache.org/docs/0.8/config.html#background >> >> 2015-02-18 21:18 GMT+01:00 Yiannis Gkoufas <johngou...@gmail.com>: >> >>> Hi there, >>> >>> I have a cluster of 10 nodes with 12 CPUs each. >>> This is my configuration: >>> >>> jobmanager.rpc.port: 6123 >>> >>> jobmanager.heap.mb: 4024 >>> >>> taskmanager.heap.mb: 8096 >>> >>> taskmanager.numberOfTaskSlots: 12 >>> >>> parallelization.degree.default: 120 >>> >>> I have been getting the following error: >>> >>> java.lang.Exception: Failed to deploy the task Reduce (SUM(1)) (65/120) >>> - execution #0 to slot SimpleSlot (1)(0) - efc370a0b2a9a63f2e7b960cfe4e4c27 >>> - ALLOCATED/ALIVE: java.io.IOException: Insufficient number of network >>> buffers: required 120, but only 2 of 2048 available. >>> at >>> org.apache.flink.runtime.io.network.buffer.NetworkBufferPool.createBufferPool(NetworkBufferPool.java:155) >>> at >>> org.apache.flink.runtime.io.network.NetworkEnvironment.registerTask(NetworkEnvironment.java:163) >>> at org.apache.flink.runtime.taskmanager.TaskManager.org >>> $apache$flink$runtime$taskmanager$TaskManager$$submitTask(TaskManager.scala:426) >>> at >>> org.apache.flink.runtime.taskmanager.TaskManager$$anonfun$receiveWithLogMessages$1.applyOrElse(TaskManager.scala:261) >>> at >>> scala.runtime.AbstractPartialFunction$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.ActorLogMessages$$anon$1.apply(ActorLogMessages.scala:37) >>> at >>> org.apache.flink.runtime.ActorLogMessages$$anon$1.apply(ActorLogMessages.scala:30) >>> at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118) >>> at >>> org.apache.flink.runtime.ActorLogMessages$$anon$1.applyOrElse(ActorLogMessages.scala:30) >>> at akka.actor.Actor$class.aroundReceive(Actor.scala:465) >>> at >>> org.apache.flink.runtime.taskmanager.TaskManager.aroundReceive(TaskManager.scala:89) >>> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) >>> at akka.actor.ActorCell.invoke(ActorCell.scala:487) >>> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254) >>> at akka.dispatch.Mailbox.run(Mailbox.scala:221) >>> at akka.dispatch.Mailbox.exec(Mailbox.scala:231) >>> at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >>> at >>> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) >>> at >>> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >>> at >>> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) >>> >>> at >>> org.apache.flink.runtime.executiongraph.Execution$2.onComplete(Execution.java:344) >>> at akka.dispatch.OnComplete.internal(Future.scala:247) >>> at akka.dispatch.OnComplete.internal(Future.scala:244) >>> at akka.dispatch.japi$CallbackBridge.apply(Future.scala:174) >>> at akka.dispatch.japi$CallbackBridge.apply(Future.scala:171) >>> at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32) >>> at >>> scala.concurrent.impl.ExecutionContextImpl$$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) >>> >>> >>> I failed to get any info online on how to solve it. >>> Any help would be welcome. >>> >>> Thank you! >>> >> >> >
