运行hadoop中的wordcound的错误？?报错

报错信息：

18/12/20 11:17:21 INFO mapreduce.Job: Job job_1545275758816_0001 running in uber mode : false
18/12/20 11:17:21 INFO mapreduce.Job:  map 0% reduce 0%
18/12/20 11:17:24 INFO mapreduce.Job: Task Id : attempt_1545275758816_0001_m_000001_0, Status : FAILED
Error: java.io.FileNotFoundException: Path is not a file: /tmp/hadoop-yarn
        at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:76)
        at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:62)
        at org.apache.hadoop.hdfs.server.namenode.FSDirStatAndListingOp.getBlockLocations(FSDirStatAndListingOp.java:152)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1819)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:692)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:381)
        at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:447)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:850)
        at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:793)
        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:1840)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2489)