haduser@user-laptop:/usr/local/hadoop$ bin/hadoop dfs -copyFromLocal /tmp/input
/user/haduser/input
11/12/14 14:21:00 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 0 time(s).
11/12/14 14:21:01 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 1 time(s).
11/12/14 14:21:02 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 2 time(s).
11/12/14 14:21:03 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 3 time(s).
11/12/14 14:21:04 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 4 time(s).
11/12/14 14:21:05 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 5 time(s).
11/12/14 14:21:06 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 6 time(s).
11/12/14 14:21:07 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. -Already tried 7 time(s).
11/12/14 14:21:08 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 8 time(s).
11/12/14 14:21:09 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:54310. Already tried 9 time(s).
Bad connection to FS. command aborted. exception: Call to localhost/127.0.0.1:54310 failed on connection exception: java.net.ConnectException: Connection refused
当我尝试从以下位置复制文件时，出现上述错误/tmp/input to /user/haduser/input即使该文件/etc/hosts包含本地主机的条目。
当。。。的时候jps command运行时，TaskTracker和namenode未列出。
可能是什么问题呢？请有人帮我解决这个问题。
我有类似的问题 - 实际上 Hadoop 绑定到 IPv6。
然后我补充道——”export HADOOP_OPTS=-Djava.net.preferIPv4Stack=true " to $HADOOP_HOME/conf/hadoop-env.sh
即使我在系统上禁用了 IPv6，Hadoop 仍绑定到 IPv6。
一旦我将它添加到环境中，就开始正常工作。
希望这对某人有帮助。
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