我正在运行Hadoop 2.8.1附带的示例mapreduce作业
我正在使用这些命令：
bin/hdfs dfs -copyFromLocal etc/hadoop/core-site.xml .
bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.3.jar grep ./core-site.xml output ‘configuration’
但是，当我运行此作业时，作业将退出（主要错误出现在标题中）：
***********s-mbp-2:hadoop-2.8.1 ***********$ bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.8.1.jar grep ./core-site.xml output ‘configuration’
17/09/12 14:30:28 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
17/09/12 14:30:29 INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
17/09/12 14:30:29 INFO input.FileInputFormat: Total input files to process : 1
17/09/12 14:30:30 INFO mapreduce.JobSubmitter: number of splits:1
17/09/12 14:30:30 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1505251091124_0001
17/09/12 14:30:30 INFO impl.YarnClientImpl: Submitted application application_1505251091124_0001
17/09/12 14:30:30 INFO mapreduce.Job: The url to track the job: http://***********s-mbp-2.lan:8088/proxy/application_1505251091124_0001/
17/09/12 14:30:30 INFO mapreduce.Job: Running job: job_1505251091124_0001
17/09/12 14:30:33 INFO mapreduce.Job: Job job_1505251091124_0001 running in uber mode : false
17/09/12 14:30:33 INFO mapreduce.Job: map 0% reduce 0%
17/09/12 14:30:33 INFO mapreduce.Job: Job job_1505251091124_0001 failed with state FAILED due to: Application application_1505251091124_0001 failed 2 times due to AM Container for appattempt_1505251091124_0001_000002 exited with exitCode: 127
Failing this attempt.Diagnostics: Exception from container-launch.
Container id: container_1505251091124_0001_02_000001
Exit code: 127
Stack trace: ExitCodeException exitCode=127:
at org.apache.hadoop.util.Shell.runCommand(Shell.java:972)
at org.apache.hadoop.util.Shell.run(Shell.java:869)
at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:1170)
at org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor.launchContainer(DefaultContainerExecutor.java:236)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:305)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:84)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Container exited with a non-zero exit code 127
For more detailed output, check the application tracking page: http://***********s-mbp-2.lan:8088/cluster/app/application_1505251091124_0001 Then click on links to logs of each attempt.
. Failing the application.
17/09/12 14:30:33 INFO mapreduce.Job: Counters: 0
17/09/12 14:30:33 INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
17/09/12 14:30:33 INFO mapreduce.JobSubmitter: Cleaning up the staging area /tmp/hadoop-yarn/staging/***********/.staging/job_1505251091124_0002
org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: hdfs://localhost:9000/user/***********/grep-temp-576807334
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.singleThreadedListStatus(FileInputFormat.java:329)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:271)
at org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat.listStatus(SequenceFileInputFormat.java:59)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:393)
at org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:303)
at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:320)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:198)
at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1341)
at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1338)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1807)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1338)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1359)
at org.apache.hadoop.examples.Grep.run(Grep.java:94)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
at org.apache.hadoop.examples.Grep.main(Grep.java:103)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.util.ProgramDriver$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:234)
at org.apache.hadoop.util.RunJar.main(RunJar.java:148)
出了什么问题，我该如何解决？
答案 0 :(得分：0)
看起来程序无法访问异常中的路径。在运行代码之前，您可以尝试在hdfs系统中使用mkdir手动创建该目录。希望它会有所帮助。