【Hadoop集群系列-3】分布式集群运行wordcount报错exited with exitCode: 1【Error: Could not find or load main class】

一、集群情况

集群搭建过程见https://blog.csdn.net/lynne_cat/article/details/102975026

二、运行命令

bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.7.jar grep input output 'dfs[a-z.]+'

三、报错信息

命令行输出

19/11/12 16:47:11 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 19/11/12 16:47:12 INFO client.RMProxy: Connecting to ResourceManager at hslave162/10.0.35.162:8032 19/11/12 16:47:13 INFO input.FileInputFormat: Total input paths to process : 35 19/11/12 16:47:14 INFO mapreduce.JobSubmitter: number of splits:35 19/11/12 16:47:14 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1573296317172_0006 19/11/12 16:47:15 INFO impl.YarnClientImpl: Submitted application application_1573296317172_0006 19/11/12 16:47:15 INFO mapreduce.Job: The url to track the job: http://hslave162:8088/proxy/application_1573296317172_0006/ 19/11/12 16:47:15 INFO mapreduce.Job: Running job: job_1573296317172_0006 19/11/12 16:47:21 INFO mapreduce.Job: Job job_1573296317172_0006 running in uber mode : false 19/11/12 16:47:21 INFO mapreduce.Job:  map 0% reduce 0% 19/11/12 16:47:21 INFO mapreduce.Job: Job job_1573296317172_0006 failed with state FAILED due to: Application application_1573296317172_0006 failed 2 times due to AM Container for appattempt_1573296317172_0006_000002 exited with  exitCode: 1 For more detailed output, check application tracking page:http://hslave162:8088/cluster/app/application_1573296317172_0006Then, click on links to logs of each attempt. Diagnostics: Exception from container-launch. Container id: container_1573296317172_0006_02_000001 Exit code: 1 Stack trace: ExitCodeException exitCode=1:      at org.apache.hadoop.util.Shell.runCommand(Shell.java:585)     at org.apache.hadoop.util.Shell.run(Shell.java:482)     at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:776)     at org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.launchContainer(DefaultContainerExecutor.java:212)     at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:302)     at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:82)     at java.util.concurrent.FutureTask.run(FutureTask.java:266)     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)     at java.lang.Thread.run(Thread.java:748) Container exited with a non-zero exit code 1 Failing this attempt. Failing the application. 19/11/12 16:47:21 INFO mapreduce.Job: Counters: 0 19/11/12 16:47:21 INFO client.RMProxy: Connecting to ResourceManager at hslave162/10.0.35.162:8032 19/11/12 16:47:22 INFO mapreduce.JobSubmitter: Cleaning up the staging area /tmp/hadoop-yarn/staging/hadoop/.staging/job_1573296317172_0007 org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://hmaster156:9000/user/hadoop/grep-temp-160258091     at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.singleThreadedListStatus(FileInputFormat.java:323)     at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:265)     at org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat.listStatus(SequenceFileInputFormat.java:59)     at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:387)     at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:301)     at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:318)     at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:196)     at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1290)     at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1287)     at java.security.AccessController.doPrivileged(Native Method)     at javax.security.auth.Subject.doAs(Subject.java:422)     at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1762)     at org.apache.hadoop.mapreduce.Job.submit(Job.java:1287)     at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1308)     at org.apache.hadoop.examples.Grep.run(Grep.java:94)     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)     at org.apache.hadoop.examples.Grep.main(Grep.java:103)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke(Method.java:498)     at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:71)     at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:144)     at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:74)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke(Method.java:498)     at org.apache.hadoop.util.RunJar.run(RunJar.java:226)     at org.apache.hadoop.util.RunJar.main(RunJar.java:141)

 

根据命令行输出信息定位日志信息： WebUI:http://10.0.35.162:19888/logs/userlogs/application_1573296317172_0006/container_1573296317172_0006_02_000001/stderr 或hmaster156: /usr/local/hadoop-2.7.7/logs/userlogs/application_1573296317172_0006/container_1573296317172_0006_02_000001/stderr

Error: Could not find or load main class org.apache.hadoop.mapreduce.v2.app.MRAppMaster

 四、解决方式

尝试	结果	参考
1.按照mapred-site.xml的mapreduce.application.classpath在hmaster156和hslave162两个节点的yarn-site.xml文件中添加yarn.application.classpath，重新启动Hadoop集群。	无效，仍报上述错误	https://www.cnblogs.com/yjt1993/p/ 9489122.html   https://blog.csdn.net/dsl200970/ article/details/70246462
2.按照hadoop classpath返回的值在hmaster156和hslave162两个节点的yarn-site.xml文件中配置yarn.application.classpath，重新启动Hadoop集群。	问题 解决	https://blog.csdn.net/oschina_41140683/ article/details/95235496   https://blog.csdn.net/qq_41684957/article/ details/81710190