hadoop集群環境安裝中的hosts 配置問題

今天在安裝hadoop集群的時候，所有節點配置完畢，發現執行下面的命令的時候

hadoop@name-node:~/hadoop$ bin/hadoop fs -ls

11/04/02 17:16:13 warn conf.configuration: mapred.task.id is deprecated. instead, use mapreduce.task.attempt.id

11/04/02 17:16:14 info ipc.client: retrying connect to server: /10.42.43.55:9000. already tried 0 time(s).

11/04/02 17:16:15 info ipc.client: retrying connect to server: /10.42.43.55:9000. already tried 1 time(s).

11/04/02 17:16:16 info ipc.client: retrying connect to server: /10.42.43.55:9000. already tried 2 time(s).

11/04/02 17:16:17 info ipc.client: retrying connect to server: /10.42.43.55:9000. already tried 3 time(s).

11/04/02 17:16:18 info ipc.client: retrying connect to server: /10.42.43.55:9000. already tried 4 time(s).

11/04/02 17:16:19 info ipc.client: retrying connect to server: /10.42.43.55:9000. already tried 5 time(s).

11/04/02 17:16:20 info ipc.client: retrying connect to server: /10.42.43.55:9000. already tried 6 time(s).

11/04/02 17:16:21 info ipc.client: retrying connect to server: /10.42.43.55:9000. already tried 7 time(s).

11/04/02 17:16:22 info ipc.client: retrying connect to server: /10.42.43.55:9000. already tried 8 time(s).

11/04/02 17:16:23 info ipc.client: retrying connect to server: /10.42.43.55:9000. already tried 9 time(s).

bad connection to fs. command aborted.

折騰了大半天，找到如下解決方案：

hadoop@name-node:~$ sudo vim /etc/hosts

重啟hadoop集群，問題解決。

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