问题目录表:
1,Bad connection to FS. command aborted. exception: Call to localhost/127.0.0.1:8888
failed on connection exception: java.net.ConnectException: Connection refused
2,Bad connection to FS. command aborted.
3,在cygwin上执行wordcount时报FileNotFoundException
1, windows下,在安装完cygwin,并配置好hadoop参数,到hadoop的bin目录下执行以下代码,
$ ./hadoop fs -ls /
遇到错误:
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).
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
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):
$ ./hadoop namenode -format
成功 之后重启hadoop就可以了
2,如果显示的像一下错误信息:
$ 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).
Bad connection to FS. command aborted.
错误提示“Bad connection to FS. command aborted.”
把你DataNode上的DFS数据全删了,再重新格式化NameNode。
即:先将你D盘下tmp目录下所有文件删了,在重复上面第一点的过程
3,在cygwin上执行wordcount时报FileNotFoundException
原因: tmp路径有问题。配置文件mapred-site.xml中mapred.child.tmp默认是"./tmp",在windows里会出问题
解决:将其改为D:/tmp(这个是windows下默认的,听说改成其他绝对路径也可以,会自动创建),之后重启hadoop即可
分享到:
相关推荐
单机伪分布式Hadoop-spark配置
在centos7下正确安装伪分布hadoop2.7.2和配置eclipse.doc。 本人实操成功。
伪分布hadoop搭建.docx
以下为文章部分标题 1.搭建单机模式Hadoop (1)关闭防火墙(2)关闭selinux防火墙(3)设置主机名(4)映射主机名与ip地址 2.安装JDK(2)上传JDK至服务器(4)配置JAVA环境变量...验证伪分布模式Hadoop是否安装部署成功
hadoop伪分布CentOS安装(四)hadoop伪分布CentOS安装(二) 便于开发者,初学者,安装配置hadoop伪分布的环境以及搭建过程
hadoop伪分布搭建步骤
Hadoop2.7.2伪分布部署 从JDK配置到SSH面密码登陆,Hadoop的详细配置
windows环境下的hadoop3.1.0依赖,winutils
很好的hadoop伪分布配置方式
hadoop伪分布CentOS安装(二) 便于开发者,初学者,安装配置hadoop伪分布的环境以及搭建过程
在 LinuxLinuxLinuxLinuxLinux5.65.65.6企业版 企业版 下成功搭建 下成功搭建 下成功搭建 HadoopHadoopHadoopHadoopHadoopHadoop伪分布 测试环境。本次在一台服务 测试环境。本次在一台服务 测试环境。本次在一台...
hadoop的单机伪分布安装笔记,使用虚拟机方式、端口转发、搭建hadoop的单机环境。学习hadoop的入门文档之一。
hadoop伪分布配置步骤,详细的介绍伪分布布置的每一个步骤,在学hadoop的同学可以了解一哈,挺不错的 ,出自我们老师之手
hadoop-hbase-hive 伪分布安装
hadoop2.6.0伪分布安装的详细过程。
hadoop伪分布搭建
Hadoop伪分布模式安装步骤,详细介绍了hadoop伪分布式安装的具体步骤。 部分步骤如下: 此步为可选项,建议用户创建一个新用户及用户组,后续的操作基本都是在此用户下来操作。但是用户亦可在自己当前非root用户下...
hadoop伪分布CentOS安装(一),给学习大数据的人,一个清晰的思路,给开发者一个很好地搭建平台
根据实战安装步骤,详细描述hadoop3.2.1、hive3.1.2(包括mysql5.7)、zookeeper3.6、hbase2.2.4、flume1.90、sqoop1.4.7各组件安装步骤,记录过程中的各种坑,方便各位看官快速安装部署hadoop伪分布集群。
hadoop的独立模式、伪分布模式、完全分布式、HA配置文件