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From Maximilian Michels <...@apache.org>
Subject Re: Flink java.io.FileNotFoundException Exception with Peel Framework
Date Thu, 30 Jun 2016 12:02:17 GMT
Good to hear! :)

On Wed, Jun 29, 2016 at 12:08 PM, ANDREA SPINA
<74598@studenti.unimore.it> wrote:
> Hi,
>
> the problem was solved after I figured out there was an istance of Flink
> TaskManager running on a node of the cluster.
> Thank you,
> Andrea
>
> 2016-06-28 12:17 GMT+02:00 ANDREA SPINA <74598@studenti.unimore.it>:
>>
>> Hi Max,
>> thank you for the fast reply and sorry: I use flink-1.0.3.
>> Yes I tested on dummy dataset with numOfBuffers = 16384 and decreasing the
>> parallelism degree and this solution solved the first exception. Anyway on
>> the 80GiB dataset I struggle with the second exception.
>>
>> Regards,
>> Andrea
>>
>> 2016-06-28 12:08 GMT+02:00 Maximilian Michels <mxm@apache.org>:
>>>
>>> Hi Andrea,
>>>
>>> The number of network buffers should be sufficient. Actually, assuming
>>> you have 16 task slots on each of the 25 nodes, it should be enough to
>>> have 16^2 * 25 * 4 = 14400 network buffers.
>>>
>>> See
>>> https://ci.apache.org/projects/flink/flink-docs-master/setup/config.html#background
>>>
>>> So we have to investigate a little more. Which version of Flink are you
>>> using?
>>>
>>> Cheers,
>>> Max
>>>
>>> On Tue, Jun 28, 2016 at 11:57 AM, ANDREA SPINA
>>> <74598@studenti.unimore.it> wrote:
>>> > Hi everyone,
>>> >
>>> > I am running some Flink experiments with Peel benchmark
>>> > http://peel-framework.org/ and I am struggling with exceptions: the
>>> > environment is a 25-nodes cluster, 16 cores per nodes. The dataset is
>>> > ~80GiB
>>> > and is located on Hdfs 2.7.1.
>>> >
>>> > At the beginning I tried with 400 as degree of parallelism and with the
>>> > following configuration:
>>> >
>>> > jobmanager.rpc.address = ${runtime.hostname}
>>> > akka.log.lifecycle.events = ON
>>> > akka.ask.timeout = 300s
>>> > jobmanager.rpc.port = 6002
>>> >
>>> > jobmanager.heap.mb = 1024
>>> > jobmanager.web.port = 6004
>>> >
>>> > taskmanager.heap.mb = 28672
>>> > taskmanager.memory.fraction = 0.7
>>> > taskmanager.network.numberOfBuffers = 32768
>>> > taskmanager.network.bufferSizeInBytes = 16384
>>> > taskmanager.tmp.dirs =
>>> >
>>> > "/data/1/peel/flink/tmp:/data/2/peel/flink/tmp:/data/3/peel/flink/tmp:/data/4/peel/flink/tmp"
>>> > taskmanager.debug.memory.startLogThread = true
>>> >
>>> > the following exception will raise
>>> >
>>> > Caused by: java.io.IOException: Insufficient number of network buffers:
>>> > required 350, but only 317 available. The total number of network
>>> > buffers is
>>> > currently set to 32768. You can increase this number by setting the
>>> > configuration key 'taskmanager.network.numberOfBuffers'.
>>> >         at
>>> >
>>> > org.apache.flink.runtime.io.network.buffer.NetworkBufferPool.createBufferPool(NetworkBufferPool.java:196)
>>> >         at
>>> >
>>> > org.apache.flink.runtime.io.network.NetworkEnvironment.registerTask(NetworkEnvironment.java:327)
>>> >         at org.apache.flink.runtime.taskmanager.Task.run(Task.java:469)
>>> >         at java.lang.Thread.run(Thread.java:745)
>>> >
>>> > So I tried different solutions, both with increasing numberOfBuffers
>>> > (Max
>>> > value tried 98304) or decreasing the degreeOfParallelism (Min value
>>> > tried
>>> > 300) and testing those configs with a dummy dataset seems to solve the
>>> > number of buffers issue.
>>> > But In each case with the 80GiB dataset now I struggle with a new
>>> > exception;
>>> > the following with a degree of parallelism = 300 and numberOfBuffers =
>>> > 32768
>>> >
>>> > org.apache.flink.client.program.ProgramInvocationException: The program
>>> > execution failed: Job execution failed.
>>> > at org.apache.flink.client.program.Client.runBlocking(Client.java:381)
>>> > at org.apache.flink.client.program.Client.runBlocking(Client.java:355)
>>> > at org.apache.flink.client.program.Client.runBlocking(Client.java:315)
>>> > at
>>> >
>>> > org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:60)
>>> > at
>>> >
>>> > org.apache.flink.api.scala.ExecutionEnvironment.execute(ExecutionEnvironment.scala:652)
>>> > at
>>> >
>>> > dima.tu.berlin.benchmark.flink.mlr.FlinkSLRTrainCommon$.main(FlinkSLRTrainCommon.scala:110)
>>> > at
>>> >
>>> > dima.tu.berlin.benchmark.flink.mlr.FlinkSLRTrainCommon.main(FlinkSLRTrainCommon.scala)
>>> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> > at
>>> >
>>> > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>>> > at
>>> >
>>> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>> > at java.lang.reflect.Method.invoke(Method.java:498)
>>> > at
>>> >
>>> > org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:505)
>>> > at
>>> >
>>> > org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:403)
>>> > at org.apache.flink.client.program.Client.runBlocking(Client.java:248)
>>> > at
>>> >
>>> > org.apache.flink.client.CliFrontend.executeProgramBlocking(CliFrontend.java:866)
>>> > at org.apache.flink.client.CliFrontend.run(CliFrontend.java:333)
>>> > at
>>> >
>>> > org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:1192)
>>> > at org.apache.flink.client.CliFrontend.main(CliFrontend.java:1243)
>>> > Caused by: org.apache.flink.runtime.client.JobExecutionException: Job
>>> > execution failed.
>>> > at
>>> >
>>> > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$7.apply$mcV$sp(JobManager.scala:717)
>>> > at
>>> >
>>> > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$7.apply(JobManager.scala:663)
>>> > at
>>> >
>>> > org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$7.apply(JobManager.scala:663)
>>> > at
>>> >
>>> > scala.concurrent.impl.Future$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.pollAndExecAll(ForkJoinPool.java:1253)
>>> > at
>>> >
>>> > scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1346)
>>> > at
>>> > scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
>>> > at
>>> >
>>> > scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
>>> > Caused by: java.lang.RuntimeException: Emitting the record caused an
>>> > I/O
>>> > exception: Channel to path
>>> >
>>> > '/data/3/peel/flink/tmp/flink-io-3a97d62c-ada4-44f1-ab72-dd018386f9aa/79305169d69f7e8b361a175af87353fa.channel'
>>> > could not be opened.
>>> > at
>>> >
>>> > org.apache.flink.runtime.operators.shipping.OutputCollector.collect(OutputCollector.java:69)
>>> > at
>>> >
>>> > org.apache.flink.runtime.operators.chaining.ChainedMapDriver.collect(ChainedMapDriver.java:78)
>>> > at org.apache.flink.runtime.operators.MapDriver.run(MapDriver.java:97)
>>> > at org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:480)
>>> > at
>>> > org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:345)
>>> > at org.apache.flink.runtime.taskmanager.Task.run(Task.java:559)
>>> > at java.lang.Thread.run(Thread.java:745)
>>> > Caused by: java.io.IOException: Channel to path
>>> >
>>> > '/data/3/peel/flink/tmp/flink-io-3a97d62c-ada4-44f1-ab72-dd018386f9aa/79305169d69f7e8b361a175af87353fa.channel'
>>> > could not be opened.
>>> > at
>>> >
>>> > org.apache.flink.runtime.io.disk.iomanager.AbstractFileIOChannel.<init>(AbstractFileIOChannel.java:61)
>>> > at
>>> >
>>> > org.apache.flink.runtime.io.disk.iomanager.AsynchronousFileIOChannel.<init>(AsynchronousFileIOChannel.java:86)
>>> > at
>>> >
>>> > org.apache.flink.runtime.io.disk.iomanager.AsynchronousBufferFileWriter.<init>(AsynchronousBufferFileWriter.java:31)
>>> > at
>>> >
>>> > org.apache.flink.runtime.io.disk.iomanager.IOManagerAsync.createBufferFileWriter(IOManagerAsync.java:257)
>>> > at
>>> >
>>> > org.apache.flink.runtime.io.network.partition.SpillableSubpartition.releaseMemory(SpillableSubpartition.java:151)
>>> > at
>>> >
>>> > org.apache.flink.runtime.io.network.partition.ResultPartition.releaseMemory(ResultPartition.java:366)
>>> > at
>>> >
>>> > org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestBuffer(LocalBufferPool.java:159)
>>> > at
>>> >
>>> > org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestBufferBlocking(LocalBufferPool.java:133)
>>> > at
>>> >
>>> > org.apache.flink.runtime.io.network.api.writer.RecordWriter.emit(RecordWriter.java:92)
>>> > at
>>> >
>>> > org.apache.flink.runtime.operators.shipping.OutputCollector.collect(OutputCollector.java:65)
>>> > ... 6 more
>>> > Caused by: java.io.FileNotFoundException:
>>> >
>>> > /data/3/peel/flink/tmp/flink-io-3a97d62c-ada4-44f1-ab72-dd018386f9aa/79305169d69f7e8b361a175af87353fa.channel
>>> > (No such file or directory)
>>> > at java.io.RandomAccessFile.open0(Native Method)
>>> > at java.io.RandomAccessFile.open(RandomAccessFile.java:316)
>>> > at java.io.RandomAccessFile.<init>(RandomAccessFile.java:243)
>>> > at java.io.RandomAccessFile.<init>(RandomAccessFile.java:124)
>>> > at
>>> >
>>> > org.apache.flink.runtime.io.disk.iomanager.AbstractFileIOChannel.<init>(AbstractFileIOChannel.java:57)
>>> > ... 15 more
>>> >
>>> > here the related jobmanager full log. I can't figure out a solution.
>>> >
>>> > Thank you and have a nice day.
>>> >
>>> > --
>>> > Andrea Spina
>>> > Guest student at DIMA, TU Berlin
>>> > N.Tessera: 74598
>>> > MAT: 89369
>>> > Ingegneria Informatica [LM] (D.M. 270)
>>
>>
>>
>>
>> --
>> Andrea Spina
>> N.Tessera: 74598
>> MAT: 89369
>> Ingegneria Informatica [LM] (D.M. 270)
>
>
>
>
> --
> Andrea Spina
> N.Tessera: 74598
> MAT: 89369
> Ingegneria Informatica [LM] (D.M. 270)

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