There can be several reasons you see this error. The most common ones are:
Disk Space on Datanodes - Like mentioned earlier in the thread. Inconsistent DataNodes - You can try to restart HDFS which should clean it up. Bad or Unresponsive Datanode Negative 'Block Size' in hdfs-site.xml. Network communication issues. Regards, Gagan Brahmi On Mon, Jul 25, 2016 at 9:14 AM, Gabriel Balan <gabriel.ba...@oracle.com> wrote: > > Hi > > org.apache.hadoop.ipc.RemoteException(java.io.IOException): File > /user/pts/output/OTSOutput/_temporary/1/_temporary/attempt_1463_0008_m_000018_2/video.mp4.of.txt > could only be replicated to 0 nodes instead of minReplication (=1). *There > are 9 datanode(s) running* and no node(s) are excluded in this operation. > > Can it be there is no more space left (for HDFS) on the host running data > nodes? > > Try running "hdfs dfsadmin -report" > > hth > > Gabriel Balan > > On 7/24/2016 7:53 PM, Madhav Sharan wrote: > > Hi hadoop users, > > We are running a mapreduce jobs with 10 nodes. Each map job process a > video and generate a .txt file as output. We are getting DataStreamer > Exception that File could only be replicated to 0 nodes instead of > minReplication (=1). This is the output file we expect after successful > run. > > Any help is appreciated. We checked hdfs has space available and all nodes > are responding. > > Full trace - > > 2016-07-24 21:55:08,343 WARN [Thread-214] > org.apache.hadoop.hdfs.DFSClient: DataStreamer Exception > > org.apache.hadoop.ipc.RemoteException(java.io.IOException): File > /user/pts/output/OTSOutput/_temporary/1/_temporary/attempt_1463_0008_m_000018_2/video.mp4.of.txt > could only be replicated to 0 nodes instead of minReplication (=1). There > are 9 datanode(s) running and no node(s) are excluded in this operation. > > at > org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:1547) > > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getNewBlockTargets(FSNamesystem.java:3107) > > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:3031) > > at > org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:724) > > at > org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:492) > > at > org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) > > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616) > > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969) > > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049) > > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045) > > at java.security.AccessController.doPrivileged(Native Method) > > at javax.security.auth.Subject.doAs(Subject.java:415) > > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657) > > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043) > > > at org.apache.hadoop.ipc.Client.call(Client.java:1475) > > at org.apache.hadoop.ipc.Client.call(Client.java:1412) > > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229) > > at com.sun.proxy.$Proxy12.addBlock(Unknown Source) > > at > org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.addBlock(ClientNamenodeProtocolTranslatorPB.java:418) > > at sun.reflect.GeneratedMethodAccessor4.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:191) > > at > org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102) > > at com.sun.proxy.$Proxy13.addBlock(Unknown Source) > > at > org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.locateFollowingBlock(DFSOutputStream.java:1459) > > at > org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1255) > > at > org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:449) > > > -- > Madhav Sharan > > > -- > The statements and opinions expressed here are my own and do not necessarily > represent those of Oracle Corporation. > >
