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From Madhav Sharan <msha...@usc.edu>
Subject Output File could only be replicated to 0 nodes
Date Sun, 24 Jul 2016 23:53:14 GMT
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

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