hadoop 遇到java.net.ConnectException: to 0.0.0.0:10020 failed on connection   这个问题一般是在hadoop2.x版本里会出现,Hadoop的datanode需要访问namenode的jobhistory server,如果没有修改,则默认为0.0.0.0:10020,则可以修改mapred-site.xml文件: <property>     <name>mapreduce.jobhistory.addr…

任务一直报错 现象比较奇怪,部分任务可以正常跑,部分问题报错 报错信息如下: Ended Job = job_1527476268558_132947 with exception 'java.io.IOException(java.net.ConnectException: Call From xxx/xxx to xxx:10020 failed on connection exception: java.net.ConnectException: 拒绝连接; For more detail…

192.168.11.12:8485: Call From hu-hadoop1/192.168.11.11 to hu-hadoop2:8485 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused at org.apache.hadoop.hdfs.…

ssh那些都已经搞了,跑一个书上的例子出现了Connection Refused异常,如下: 12/04/09 01:00:54 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:8020. Already tried 0 time(s).12/04/09 01:00:56 INFO ipc.Client: Retrying connect to server: localhost/127.0.0.1:8020. A…

Call to localhost/127.0.0.1:9000 failed on connection exception:java.net.ConnectException的解决方案 作者:凯鲁嘎吉 - 博客园 http://www.cnblogs.com/kailugaji/ 在启动hadoop时,出现了如下错误: Call From java.net.UnknownHostException: ubuntu-larntin: ubuntu-larntin to localhost:90…

android手机做下载文件时,报了如下异常: java.net.ConnectException: localhost/127.0.0.1:8080 - Connection refused 模拟器默认把localhost或者127.0.0.1当做本身 在模拟器上可以用10.0.2.2代替127.0.0.1和localhost…

这对刚学会向tomcat模拟的本地服务器发送请求的同学非常重要! 转自:http://wing123.iteye.com/blog/1873763 描述:在做注册功能的时候,向本地服务器:127.0.0.1发送注册请求,logcat显示出错信息: java.net.ConnectException: localhost/127.0.0.1:8888 - Connection refused 解决办法:弃用127.0.0.1来访问服务器,改用本机的真实IP. 问题解释:摘自:http://80x8…

调试中通过android simulator模拟器链接localhost或者127.0.0.1,因为我在电脑上面建立了apache,我的代码大概就是URL url = new URL(urlString);     URLConnection urlconn = url.openConnection(); 但是报错了!! Exception 1:java.net.ConnectException: localhost/127.0.0.1:8080 - Connection refused 问题是…

现象:在windows上部署RMI很顺利,但移到debian上部署后,客户端报异常: java.rmi.ConnectException: Connection refused to host: 127.0.1.1; nested exception is: java.net.ConnectException: Connection refused: connect at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:6…

最近使用 jmx 遇到一个问题,client/server 同在一台机器上,jmx client能够成功连接 server,如果把 server 移植到另一台机器上192.168.134.128,抛出如下异常: java.net.ConnectException: Connection refused: connect java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: ja…