Hadoop 을 잠시 배워보려고, 설치해서 사용해보려고 합니다.

근데, 시작하자 마자 put 에서 아래와 같은 오류가...구글링해도 잘 모르겠네요.

10 개파일을 put 했는데, hadoop fs -ls 하면, 1개가 0 bytes 로 나타나네요.

이거 참...막막하네요. -_-;

---------------------------------------------------------------------------------------------------------------------

오류는 아래와 같습니다.

13/01/28 06:25:16 WARN hdfs.DFSClient: Could not get block locations. Source file "/user/root/hdfs_wordcount_input/conf/log4j.properties" - Aborting...
put: java.io.IOException: File /user/root/hdfs_wordcount_input/conf/log4j.properties could only be replicated to 0 nodes, instead of 1
13/01/28 06:25:16 ERROR hdfs.DFSClient: Exception closing file /user/root/hdfs_wordcount_input/conf/log4j.properties : org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /user/root/hdfs_wordcount_input/conf/log4j.properties could only be replicated to 0 nodes, instead of 1
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1558)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:696)
        at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:563)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1388)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1384)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1382)

org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /user/root/hdfs_wordcount_input/conf/log4j.properties could only be replicated to 0 nodes, instead of 1
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1558)
        at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:696)
        at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:563)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1388)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1384)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1382)