问题
I tried this command in command prompt (run as administrator):
hadoop jar C:\Users\tejashri\Desktop\Hadoopproject\WordCount.jar WordcountDemo.WordCount /work /out
but i got this error message: my application got stopped.
2020-04-04 23:53:27,918 INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
2020-04-04 23:53:28,881 WARN mapreduce.JobResourceUploader: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this.
2020-04-04 23:53:28,951 INFO mapreduce.JobResourceUploader: Disabling Erasure Coding for path: /tmp/hadoop-yarn/staging/tejashri/.staging/job_1586024027199_0006
2020-04-04 23:53:29,162 INFO sasl.SaslDataTransferClient: SASL encryption trust check: localHostTrusted = false, remoteHostTrusted = false
2020-04-04 23:53:29,396 INFO input.FileInputFormat: Total input files to process : 1
2020-04-04 23:53:29,570 INFO sasl.SaslDataTransferClient: SASL encryption trust check: localHostTrusted = false, remoteHostTrusted = false
2020-04-04 23:53:29,762 INFO sasl.SaslDataTransferClient: SASL encryption trust check: localHostTrusted = false, remoteHostTrusted = false
2020-04-04 23:53:29,802 INFO mapreduce.JobSubmitter: number of splits:1
2020-04-04 23:53:30,059 INFO sasl.SaslDataTransferClient: SASL encryption trust check: localHostTrusted = false, remoteHostTrusted = false
2020-04-04 23:53:30,156 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1586024027199_0006
2020-04-04 23:53:30,156 INFO mapreduce.JobSubmitter: Executing with tokens: []
2020-04-04 23:53:30,504 INFO conf.Configuration: resource-types.xml not found
2020-04-04 23:53:30,507 INFO resource.ResourceUtils: Unable to find 'resource-types.xml'.
2020-04-04 23:53:30,586 INFO impl.YarnClientImpl: Submitted application application_1586024027199_0006
2020-04-04 23:53:30,638 INFO mapreduce.Job: The url to track the job: http://LAPTOP-2UBC7TG1:8088/proxy/application_1586024027199_0006/
2020-04-04 23:53:30,640 INFO mapreduce.Job: Running job: job_1586024027199_0006
2020-04-04 23:53:35,676 INFO mapreduce.Job: Job job_1586024027199_0006 running in uber mode : false
2020-04-04 23:53:35,679 INFO mapreduce.Job: map 0% reduce 0%
2020-04-04 23:53:35,698 INFO mapreduce.Job: Job job_1586024027199_0006 failed with state FAILED due to: Application application_1586024027199_0006 failed 2 times due to AM Container for appattempt_1586024027199_0006_000002 exited with exitCode: 1
Failing this attempt.Diagnostics: [2020-04-04 23:53:34.955]Exception from container-launch.
Container id: container_1586024027199_0006_02_000001
Exit code: 1
Shell output: 1 file(s) moved.
"Setting up env variables"
"Setting up job resources"
"Copying debugging information"
C:\hadoop\hdfstmp\nm-local-dir\usercache\tejashri\appcache\application_1586024027199_0006\container_1586024027199_0006_02_000001>rem Creating copy of launch script
C:\hadoop\hdfstmp\nm-local-dir\usercache\tejashri\appcache\application_1586024027199_0006\container_1586024027199_0006_02_000001>copy "launch_container.cmd" "C:/hadoop/logs/userlogs/application_1586024027199_0006/container_1586024027199_0006_02_000001/launch_container.cmd"
1 file(s) copied.
C:\hadoop\hdfstmp\nm-local-dir\usercache\tejashri\appcache\application_1586024027199_0006\container_1586024027199_0006_02_000001>rem Determining directory contents
C:\hadoop\hdfstmp\nm-local-dir\usercache\tejashri\appcache\application_1586024027199_0006\container_1586024027199_0006_02_000001>dir 1>>"C:/hadoop/logs/userlogs/application_1586024027199_0006/container_1586024027199_0006_02_000001/directory.info"
"Launching container"
[2020-04-04 23:53:34.959]Container exited with a non-zero exit code 1. Last 4096 bytes of stderr :
'"C:\Program Files\Java\jdk1.8.0_171"' is not recognized as an internal or external command,
operable program or batch file.
[2020-04-04 23:53:34.960]Container exited with a non-zero exit code 1. Last 4096 bytes of stderr :
'"C:\Program Files\Java\jdk1.8.0_171"' is not recognized as an internal or external command,
operable program or batch file.
For more detailed output, check the application tracking page: http://LAPTOP-2UBC7TG1:8088/cluster/app/application_1586024027199_0006 Then click on links to logs of each attempt.
. Failing the application.
2020-04-04 23:53:35,743 INFO mapreduce.Job: Counters: 0
回答1:
'"C:\Program Files\Java\jdk1.8.0_171"' is not recognized as an internal or external command,
operable program or batch file.
The JAVA_HOME variable is not properly set in hadoop-env.cmd.
Also, move the JDK installation to a folder without whitespaces (say, C:\Java\jdk1.8.0_171)
Update the JAVA_HOME and PATH environment variables
Add this line in hadoop-env.cmd,
set JAVA_HOME=C:\Java\jdk1.8.0_171
Restart the hadoop daemons and run the Job.
来源：https://stackoverflow.com/questions/61032119/could-not-run-jar-file-in-hadoop3-1-3