wow. good to know. however, it would seem to me like a bug in MultipleOutputs? either way, it doesn't seem anything to do with the Mahout code itself.
On Thu, Oct 9, 2014 at 10:32 AM, Yang <[email protected]> wrote: > yes, that's what I'm saying, I disabled speculative, it works for now (kind > of is a hack) > > > also yes, this is hadoop 2.0 with YARN > > this has nothing to do with overwrite mode. the 2 attempts are run > simultaneously because they are speculative runs > > On Wed, Oct 8, 2014 at 12:07 AM, Serega Sheypak <[email protected]> > wrote: > > > owned by > > DFSClient_attempt_1412632629877_7081_*m_000000_1_**196610264_1 > > *but is > > accessed by > > DFSClient_attempt_1412632629877_7081_*m_000000_0_**1051299648_1* > > at > > > > Looks like two clients try to write to the same dir and they are trying > to > > write to the same file. > > > > 2014-10-08 6:24 GMT+04:00 Dmitriy Lyubimov <[email protected]>: > > > > > Usually map reduce output format would issue a much clearer > message.this > > on > > > the other hand looks like a name node operation conflict. > > > > > > Sent from my phone. > > > On Oct 7, 2014 3:23 PM, "Suneel Marthi" <[email protected]> wrote: > > > > > > > Have u tried running with -ow (overwrite) option, that should clear > all > > > > tmpdir between successive runs ?? > > > > > > > > The SSVD code does clear the tmpdir when -ow is specified. > > > > > > > > On Tue, Oct 7, 2014 at 5:55 PM, Yang <[email protected]> wrote: > > > > > > > > > we are running mahout ssvd, with a --tempDir parameter, > > > > > but we are constantly getting this error below. > > > > > > > > > > the following seems to suggest that the 2 attempts in mapper are > > trying > > > > to > > > > > access the same tmp dir on hdfs. > > > > > > > > > > if this is the cause, then ssvd has a bug in that different > attempts > > > > should > > > > > use different temp dirs . right? > > > > > > > > > > > > > > > I'm trying now without the --tempDir param > > > > > > > > > > thanks > > > > > Yang > > > > > > > > > > Error: > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException): > > > > > Lease mismatch on > > > > /user/myuser/CIReco/shoes/ssvd/tmp/ssvd/Bt-job/Q-m-00000 > > > > > owned by > DFSClient_attempt_1412632629877_7081_m_000000_1_196610264_1 > > > but > > > > is > > > > > accessed by > > > DFSClient_attempt_1412632629877_7081_m_000000_0_1051299648_1 > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2967) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFileInternal(FSNamesystem.java:3016) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFile(FSNamesystem.java:2996) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.complete(NameNodeRpcServer.java:647) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.complete(ClientNamenodeProtocolServerSideTranslatorPB.java:484) > > > > > 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$1.run(Server.java:2020) at > > > > > org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2016) at > > > > > > > > > > java.security.AccessController.doPrivileged(Native Method) at > > > > > javax.security.auth.Subject.doAs(Subject.java:415) at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1650) > > > > > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2014) 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$Invoker.invoke(ProtobufRpcEngine.java:206) > > > > > at com.sun.proxy.$Proxy15.complete(Unknown Source) at > > > > > sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at > > > > > > > > > > > > > > > > > > > > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) > > > > > 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.$Proxy15.complete(Unknown Source) at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.complete(ClientNamenodeProtocolTranslatorPB.java:404) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hdfs.DFSOutputStream.completeFile(DFSOutputStream.java:2116) > > > > > at > > > > > org.apache.hadoop.hdfs.DFSOutputStream.close(DFSOutputStream.java:2100) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:70) > > > > > at > > > > > > > > > > > > > > > org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:103) > > > > > at > > > org.apache.hadoop.io.SequenceFile$Writer.close(SequenceFile.java:1279) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.io.SequenceFile$BlockCompressWriter.close(SequenceFile.java:1501) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.mapred.SequenceFileOutputFormat$1.close(SequenceFileOutputFormat.java:79) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.mapred.lib.MultipleOutputs.close(MultipleOutputs.java:537) > > > > > at > > > > > > > > > > > > > > > > > > > > org.apache.mahout.common.IOUtils$MultipleOutputsCloseableAdapter.close(IOUtils.java:193) > > > > > at org.apache.mahout.common.IOUtils.close(IOUtils.java:128) at > > > > > > > > > > > > > > > > > > > > org.apache.mahout.math.hadoop.stochasticsvd.BtJob$BtMapper.cleanup(BtJob.java:295) > > > > > at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:148) at > > > > > org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764) at > > > > > org.apache.hadoop.mapred.MapTask.run(MapTask.java:340) at > > > > > org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:167) 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:1650) > > > > > at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162) > > > > > > > > > > > > > > >
