Hi Chen, Please see the bug I filed at https://issues.apache.org/jira/browse/SPARK-2984 with the FileNotFoundException on _temporary directory issue.
Andrew On Mon, Aug 11, 2014 at 10:50 PM, Andrew Ash <and...@andrewash.com> wrote: > Not sure which stalled HDFS client issue your'e referring to, but there > was one fixed in Spark 1.0.2 that could help you out -- > https://github.com/apache/spark/pull/1409. I've still seen one related > to Configuration objects not being threadsafe though so you'd still need to > keep speculation on to fix that (SPARK-2546) > > As it stands now, I can: > > A) have speculation off, in which case I get random hangs for a variety of > reasons (your HDFS stall, my Configuration safety issue) > > or > > B) have speculation on, in which case I get random failures related to > LeaseExpiredExceptions and .../_temporary/... file doesn't exist exceptions. > > > Kind of a catch-22 -- there's no reliable way to run large jobs on Spark > right now! > > I'm going to file a bug for the _temporary and LeaseExpiredExceptions as I > think these are widespread enough that we need a place to track a > resolution. > > > On Mon, Aug 11, 2014 at 9:08 AM, Chen Song <chen.song...@gmail.com> wrote: > >> 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 >> >> >
