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 <74...@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 <m...@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 >> <74...@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)
