本地执行MapReduce程序之后，报的一些错误

【client eclipse集群提交运行】&＃xff1a;客户端 eclipse集群提交 mapreduce代码

            mapreduce.framework.namelocal //改成yarnThe runtime framework for executing MapReduce jobs.Can be one of local, classic or yarn. 
  2.报错&＃xff1a;       

             

            2018-06-28 00:23:18,573 WARN [main] util.NativeCodeLoader (NativeCodeLoader.java:· (62)) - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable2018-06-28 00:23:20,481 INFO [main] client.RMProxy (RMProxy.java:createRMProxy(98)) -  Connecting to ResourceManager at /0.0.0.0:8032Retrying connect to server: 0.0.0.0/0.0.0.0:8032.//主机名默认是0.0.0.0&＃xff0c;然后尝试连接连不上&＃xff0c;需要指定指定主机名为master&＃xff0c;去连接

             解决&＃xff1a;【yarn-site.xml】

                    The hostname of the RM.yarn.resourcemanager.hostnamemaster //默认值是&＃xff1a;0.0.0.0
 3. 报错&＃xff1a;

       

Exit code: 1Exception message: /bin/bash: line 0: fg: no job control//没有job协议                         Container exited with a non-zero exit code 1Failing this attempt. Failing the application.2018-06-28 00:40:54,407 INFO [main] mapreduce.Job (Job.java:monitorAndPrintJob(1385)) - Counters: 0       解决: 【mapred-site.xml】

        允许跨平台&＃xff0c;使得Windows平台向集群提交job  

             If enabled, user can submit an application cross-platform //用户就可以提交应用跨平台i.e. submit an application from a Windows client to a Linux/Unix server orvice versa.mapreduce.app-submission.cross-platform //app应用允许跨平台true //默认false,应该改成true
  4. 执行之后&＃xff0c;无结果运行&＃xff1a;

        

No job jar file set. User classes may not be found. See Job or Job#setJar(String). Container killed by the ApplicationMaster.Container killed on request. Exit code is 143Container exited with a non-zero exit code 143        原因&＃xff1a;没有生成jar文件

        解决&＃xff1a;打jar包(将写的java文件和配置的文件都导出)。

                    放置到classpath下&＃xff1a;右键jar包-->Bulid Path-->add to Bulid Path


 5.报错&＃xff1a;0.0.0./0.0.0.&＃xff1a;10020&＃xff0c;反复的报这个错

                10020是历史服务器;

          解决&＃xff1a;把历史服务器开启来就好&＃xff0c;开启history服务&＃xff0c;

          命令即可&＃xff1a;            

                 1&＃xff09; $>mr-jobhistory-daemon.sh start historyserver

                 2&＃xff09; 还要修改【mapred-site.xml】&＃xff1a;

                       
 mapreduce.jobhistory.address &＃61; master:10020

                      mapred-site.xml中还有添加&＃xff1a;        

                       

            mapreduce.jobhistory.address0.0.0.0:10020 //改成master:10020MapReduce JobHistory Server IPC host:port