hadoop创建两大错误：Bad connection to FS. command aborted. exception和Shutting down NameNod......

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我的hadoop启动后，各个节点都正常，但是无法查看hdfs目录，错误提示

Bad connection to FS. command aborted. 查了下网上的解决办法，主要是删除tmp下的所有文件，然后格式化就可以了。

原文：http://www.tuicool.com/articles/J7R3mei

问题目录表：

Bad connection to FS. command aborted. exception: Call to localhost/127.0.0.1:8888

failed on connection exception: java.net.ConnectException: Connection refused

遇到错误：

Error代码收藏代码

11 / 08 / 18 14 : 56 : 37 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 8888 . Already tried 0 time(s).
11 / 08 / 18 14 : 56 : 39 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 8888 . Already tried 1 time(s).
11 / 08 / 18 14 : 56 : 41 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 8888 . Already tried 2 time(s).
11 / 08 / 18 14 : 56 : 43 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 8888 . Already tried 3 time(s).
11 / 08 / 18 14 : 56 : 45 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 8888 . Already tried 4 time(s).
11 / 08 / 18 14 : 56 : 47 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 8888 . Already tried 5 time(s).
11 / 08 / 18 14 : 56 : 49 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 8888 . Already tried 6 time(s).
11 / 08 / 18 14 : 56 : 51 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 8888 . Already tried 7 time(s).
11 / 08 / 18 14 : 56 : 53 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 8888 . Already tried 8 time(s).
11 / 08 / 18 14 : 56 : 55 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 8888 . Already tried 9 time(s).

Error代码收藏代码

Bad connection to FS. command aborted. exception : Call to localhost/ 127.0 . 0.1: 88
88 failed on connection exception: java.net.ConnectException: Connection refused
: no further information
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错误提示“Bad connection to FS. command aborted. exception: Call to localhost/127.0.0.1:88

88 failed on connection exception: java.net.ConnectException: Connection refused

: no further information”

起初怀疑是fs服务没有启动，但反复关闭启动多次后仍没用，请教高手后，被建议重新格式化namenode，就可以了。

格式化指令如下（在hadoop的bin目录下）：

Shell代码收藏代码

成功之后重启hadoop就可以了

2，如果显示的像一下错误信息：

Error代码收藏代码

$ bin/hadoop fs -ls /
11 / 08 / 18 17 : 02 : 35 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 9000 . Already tried 0 time(s).
11 / 08 / 18 17 : 02 : 37 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 9000 . Already tried 1 time(s).
11 / 08 / 18 17 : 02 : 39 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 9000 . Already tried 2 time(s).
11 / 08 / 18 17 : 02 : 41 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 9000 . Already tried 3 time(s).
11 / 08 / 18 17 : 02 : 43 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 9000 . Already tried 4 time(s).
11 / 08 / 18 17 : 02 : 45 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 9000 . Already tried 5 time(s).
11 / 08 / 18 17 : 02 : 46 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 9000 . Already tried 6 time(s).
11 / 08 / 18 17 : 02 : 48 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 9000 . Already tried 7 time(s).
11 / 08 / 18 17 : 02 : 50 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 9000 . Already tried 8 time(s).
11 / 08 / 18 17 : 02 : 52 INFO ipc.Client: Retrying connect to server: localhost/127.0 . 0
. 1 : 9000 . Already tried 9 time(s).