Andrew that is a good finding. Yes, I have speculative execution turned on, becauseI saw tasks stalled on HDFS client.
If I turned off speculative execution, is there a way to circumvent the hanging task issue? On Mon, Aug 11, 2014 at 11:13 AM, Andrew Ash <and...@andrewash.com> wrote: > I've also been seeing similar stacktraces on Spark core (not streaming) > and have a theory it's related to spark.speculation being turned on. Do > you have that enabled by chance? > > > On Mon, Aug 11, 2014 at 8:10 AM, Chen Song <chen.song...@gmail.com> wrote: > >> Bill >> >> Did you get this resolved somehow? Anyone has any insight into this >> problem? >> >> Chen >> >> >> On Mon, Aug 11, 2014 at 10:30 AM, Chen Song <chen.song...@gmail.com> >> wrote: >> >>> The exception was thrown out in application master(spark streaming >>> driver) and the job shut down after this exception. >>> >>> >>> On Mon, Aug 11, 2014 at 10:29 AM, Chen Song <chen.song...@gmail.com> >>> wrote: >>> >>>> I got the same exception after the streaming job runs for a while, The >>>> ERROR message was complaining about a temp file not being found in the >>>> output folder. >>>> >>>> 14/08/11 08:05:08 ERROR JobScheduler: Error running job streaming job >>>> 1407744300000 ms.0 >>>> java.io.FileNotFoundException: File >>>> hdfs://hadoopc/user/csong/output/human_bot/-1407744300000.out/_temporary/0/task_201408110805_0000_m_000007 >>>> does not exist. >>>> at >>>> org.apache.hadoop.hdfs.DistributedFileSystem.listStatusInternal(DistributedFileSystem.java:654) >>>> at >>>> org.apache.hadoop.hdfs.DistributedFileSystem.access$600(DistributedFileSystem.java:102) >>>> at >>>> org.apache.hadoop.hdfs.DistributedFileSystem$14.doCall(DistributedFileSystem.java:712) >>>> at >>>> org.apache.hadoop.hdfs.DistributedFileSystem$14.doCall(DistributedFileSystem.java:708) >>>> at >>>> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) >>>> at >>>> org.apache.hadoop.hdfs.DistributedFileSystem.listStatus(DistributedFileSystem.java:708) >>>> at >>>> org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter.mergePaths(FileOutputCommitter.java:360) >>>> at >>>> org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter.commitJob(FileOutputCommitter.java:310) >>>> at >>>> org.apache.hadoop.mapred.FileOutputCommitter.commitJob(FileOutputCommitter.java:136) >>>> at >>>> org.apache.spark.SparkHadoopWriter.commitJob(SparkHadoopWriter.scala:126) >>>> at >>>> org.apache.spark.rdd.PairRDDFunctions.saveAsHadoopDataset(PairRDDFunctions.scala:841) >>>> at >>>> org.apache.spark.rdd.PairRDDFunctions.saveAsHadoopFile(PairRDDFunctions.scala:724) >>>> at >>>> org.apache.spark.rdd.PairRDDFunctions.saveAsHadoopFile(PairRDDFunctions.scala:643) >>>> at org.apache.spark.rdd.RDD.saveAsTextFile(RDD.scala:1068) >>>> at >>>> org.apache.spark.streaming.dstream.DStream$$anonfun$8.apply(DStream.scala:773) >>>> at >>>> org.apache.spark.streaming.dstream.DStream$$anonfun$8.apply(DStream.scala:771) >>>> at >>>> org.apache.spark.streaming.dstream.ForEachDStream$$anonfun$1.apply$mcV$sp(ForEachDStream.scala:41) >>>> at >>>> org.apache.spark.streaming.dstream.ForEachDStream$$anonfun$1.apply(ForEachDStream.scala:40) >>>> at >>>> org.apache.spark.streaming.dstream.ForEachDStream$$anonfun$1.apply(ForEachDStream.scala:40) >>>> at scala.util.Try$.apply(Try.scala:161) >>>> at org.apache.spark.streaming.scheduler.Job.run(Job.scala:32) >>>> at >>>> org.apache.spark.streaming.scheduler.JobScheduler$JobHandler.run(JobScheduler.scala:172) >>>> at >>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >>>> at >>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >>>> at java.lang.Thread.run(Thread.java:745) >>>> >>>> >>>> On Fri, Jul 25, 2014 at 7:04 PM, Bill Jay <bill.jaypeter...@gmail.com> >>>> wrote: >>>> >>>>> I just saw another error after my job was run for 2 hours: >>>>> >>>>> >>>>> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException): >>>>> No lease on /apps/data/vddil/real-time/checkpoint/temp: File does not >>>>> exist. Holder DFSClient_NONMAPREDUCE_327993456_13 does not have any open >>>>> files. >>>>> at >>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2946) >>>>> at >>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.analyzeFileState(FSNamesystem.java:2766) >>>>> at >>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2674) >>>>> at >>>>> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:584) >>>>> at >>>>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:440) >>>>> at >>>>> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) >>>>> at >>>>> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585) >>>>> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928) >>>>> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2013) >>>>> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2009) >>>>> at java.security.AccessController.doPrivileged(Native Method) >>>>> at javax.security.auth.Subject.doAs(Subject.java:415) >>>>> at >>>>> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1557) >>>>> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2007) >>>>> >>>>> at org.apache.hadoop.ipc.Client.call(Client.java:1410) >>>>> at org.apache.hadoop.ipc.Client.call(Client.java:1363) >>>>> at >>>>> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206) >>>>> at com.sun.proxy.$Proxy14.addBlock(Unknown Source) >>>>> at sun.reflect.GeneratedMethodAccessor146.invoke(Unknown Source) >>>>> at >>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) >>>>> at java.lang.reflect.Method.invoke(Method.java:606) >>>>> at >>>>> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:190) >>>>> at >>>>> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:103) >>>>> at com.sun.proxy.$Proxy14.addBlock(Unknown Source) >>>>> at >>>>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:361) >>>>> at >>>>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1439) >>>>> at >>>>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1261) >>>>> at >>>>> org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:525) >>>>> 14/07/25 14:45:12 WARN CheckpointWriter: Error in attempt 1 of writing >>>>> checkpoint to >>>>> hdfs://gnosis-01-01-01.crl.samsung.com/apps/data/vddil/real-time/checkpoint/checkpoint-1406324700000 >>>>> >>>>> >>>>> >>>>> All my jobs use the same parameter to the function checkpoint. Is it >>>>> the reason for the error? >>>>> >>>>> I will post the stack trace of the other error after it appears again. >>>>> Thanks! >>>>> >>>>> >>>>> Bill >>>>> >>>>> >>>>> On Fri, Jul 25, 2014 at 2:57 PM, Tathagata Das < >>>>> tathagata.das1...@gmail.com> wrote: >>>>> >>>>>> Can you give a stack trace and logs of the exception? Its hard to say >>>>>> anything without any associated stack trace and logs. >>>>>> >>>>>> TD >>>>>> >>>>>> >>>>>> On Fri, Jul 25, 2014 at 1:32 PM, Bill Jay <bill.jaypeter...@gmail.com >>>>>> > wrote: >>>>>> >>>>>>> Hi, >>>>>>> >>>>>>> I am running a Spark Streaming job that uses saveAsTextFiles to save >>>>>>> results into hdfs files. However, it has an exception after 20 batches >>>>>>> >>>>>>> >>>>>>> >>>>>>> result-1406312340000/_temporary/0/task_201407251119_0000_m_000003 does >>>>>>> not exist. >>>>>>> >>>>>>> >>>>>>> When the job is running, I do not change any file in the folder. >>>>>>> Does anyone know why the file cannot be found? >>>>>>> >>>>>>> Thanks! >>>>>>> >>>>>>> Bill >>>>>>> >>>>>> >>>>>> >>>>> >>>> >>>> >>>> -- >>>> Chen Song >>>> >>>> >>> >>> >>> -- >>> Chen Song >>> >>> >> >> >> -- >> Chen Song >> >> > -- Chen Song
