HDFS NFS copy commands fails with cannot create regular file Input/output error

[#1]

cp /tmp/Data_src/1MB_File /tmp/tmp_mnt/NFS_DIR/1MB_File

cp: cannot create regular file ‘/tmp/tmp_mnt/NFS_DIR/1MB_File’: Input/output error

[#2]

@Raghav Kumar Gautam- Can you please share HDFS NFS server logs?

[#3]

From the HDFS NFS logs I see the below exception

org.apache.hadoop.ipc.RemoteException(java.io.IOException): Access time for hdfs is not configured.  Please set dfs.namenode.accesstime.precision configuration parameter.
        at org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.setTimes(FSDirAttrOp.java:105)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setTimes(FSNamesystem.java:1953)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.setTimes(NameNodeRpcServer.java:1360)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.setTimes(ClientNamenodeProtocolServerSideTranslatorPB.java:926)
        at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:640)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2351)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2347)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1833)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2345)
        at org.apache.hadoop.ipc.Client.getRpcResponse(Client.java:1552)
        at org.apache.hadoop.ipc.Client.call(Client.java:1496)
        at org.apache.hadoop.ipc.Client.call(Client.java:1396)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233)
        at com.sun.proxy.$Proxy12.setTimes(Unknown Source)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.setTimes(ClientNamenodeProtocolTranslatorPB.java:901)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

I have set the dfs.access.time.precision value to 360000 in hdfs-site.xml. Please let me know what am I missing here

[#4]

Hi Raghav, I am also facing same issue.. is it resolved for you?

[#5 · Accepted solution]

@Raghav Kumar Gautam

As from the logs you can see you need to set the dfs.namenode.accesstime.precision value to 3600000. The property dfs.access.time.precision is deprecated. Ambari sets the new one dfs.namenode.accesstime.precision to 0, which disables setting access time. So, setting the new property should resolve the issue.