mapreduce真的是门学问,遇到的问题逼着我把它从MRv1摸索到MRv2,从年前就牵挂在心里,连过年回家的旅途上都是心情凝重,今天终于在eclipse控制台看到了job completed successfully,当时的兴奋难以形容,都有些不敢相信自己的眼睛,压抑住激动的心情再试了一遍,特么真的跑通了,喜极而泣. 总结起来就是两处 1.报错Class not found 或者 No job jar file set 这是由于及集群中没有我们提交的jar包,所以namenode不知道怎么执行…

最近遇到一个问题,不知怎么突然运行hadoop的map程序报错,困扰了我很久,现在来给大家分享分享.. 错误信息 2017-05-18 21:34:22,104 INFO [main] client.RMProxy (RMProxy.java:createRMProxy(98)) - Connecting to ResourceManager at /0.0.0.0:8032 2017-05-18 21:34:22,642 WARN [main] mapreduce.JobResourceUpl…

按照文档:http://www.micmiu.com/bigdata/hadoop/hadoop2x-eclipse-mapreduce-demo/安装配置好Eclipse后,运行WordCount程序报错: log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory). log4j:WARN Please initialize the log4j…

报错信息 17/07/06 17:00:27 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.17/07/06 17:00:27 WARN mapred.JobClient: No job jar file set. User classes may not be found. See JobConf…

在linux下编译java程序,执行javac编译生成class文件时,在centos7终端输入如,javac hello.java    会提示未找到指令,但用java -verison测试环境变量是没问题的 百度了好久,说的很复杂,重新再linux配置环境变量,输入 vi /etc/profile进入,添加以下代码: export JAVA_HOME=/usr/local/jdk1.8.0_144 export PATH=$JAVA_HOME/bin:$PATH export CLASSPA…

G:\>java -Xms128M -Xmx512M -server -Dprogram.name=b omc-sa-tdtpagent -Dfile.encoding=GBK -Duser.timezone=GMT+8 -jar ../test.jar agent 1>td.log Error: missing `server' JVM at `C:\Program Files\Java\jre7\bin\server\jvm.dll'. Please install or use the…

windows下Eclipse操作MapReduce例子报错: 14/05/18 22:05:29 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 14/05/18 22:05:29 ERROR security.UserGroupInformation: PriviledgedActi…

eclipse运行hadoop程序报错:Connection refused: no further information log4j:WARN No appenders could be found for logger (org.apache.hadoop.conf.Configuration.deprecation). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging…

运行编译后的程序报错  error while loading shared libraries: lib*.so: cannot open shared object file: No such file or directory -------------------------------------------------------------------------------------------------------------------------------------…

0. 说明  Windows 下开发 MapReduce 程序部署到集群 1. 前提 在本地开发的时候保证 resource 中包含以下配置文件,从集群的配置文件中拷贝 在 resource 中新建 mapred-site.xml(仅做测试使用,打包的时候删掉) <?xml version="1.0"?> <configuration> <property> <name>mapreduce.framework.name</name&…