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From Yiannis Gkoufas <johngou...@gmail.com>
Subject Re: Exception: Insufficient number of network buffers: required 120, but only 2 of 2048 available
Date Thu, 19 Feb 2015 00:32:11 GMT
Perfect! It worked! Thanks a lot for the help!

On 18 February 2015 at 22:13, Fabian Hueske <fhueske@gmail.com> wrote:

> 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 <johngouf85@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 <fhueske@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 <johngouf85@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!
>>>>
>>>
>>>
>>
>

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