Job jar is not present. Not adding any jar to the list of resources

Job jar is not present. Not adding any jar to the list of resources

eclipse开发mapreduce程序，本地可以正常运行，使用eclipse打包上传到Linux上，使用hadoop jar命令执行，报错如下： [root@single test]# hadoop jar salarysum.jar  hdfs://single:9000/input/emp.txt /outputSLF4J: Class path contains multiple SLF4J bindings.SLF4J: Found binding in [rsrc:org/slf4j/impl/StaticLoggerBinder.class]SLF4J: Found binding in [jar:rsrc:slf4j-log4j12-1.7.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]SLF4J: See for an explanation.SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]20/06/27 21:15:11 INFO client.RMProxy: Connecting to ResourceManager at single/192.168.128.11:803220/06/27 21:15:18 WARN mapreduce.JobResourceUploader: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this.20/06/27 21:15:18 WARN mapreduce.JobResourceUploader: No job jar file set.  User classes may not be found. See Job or Job#setJar(String).20/06/27 21:15:18 INFO input.FileInputFormat: Total input paths to process : 120/06/27 21:15:23 INFO mapreduce.JobSubmitter: number of splits:120/06/27 21:15:23 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1592642952782_002120/06/27 21:15:23 INFO mapred.YARNRunner: Job jar is not present. Not adding any jar to the list of resources.20/06/27 21:15:27 INFO impl.YarnClientImpl: Submitted application application_1592642952782_002120/06/27 21:15:27 INFO mapreduce.Job: The url to track the job: 21:15:27 INFO mapreduce.Job: Running job: job_1592642952782_002120/06/27 21:15:41 INFO mapreduce.Job: Job job_1592642952782_0021 running in uber mode : false20/06/27 21:15:41 INFO mapreduce.Job:  map 0% reduce 0%20/06/27 21:15:54 INFO mapreduce.Job:  map 100% reduce 0%20/06/27 21:15:54 INFO mapreduce.Job: Task Id : attempt_1592642952782_0021_m_000000_0, Status : FAILEDError: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class com.leboop.totalsalary.SalarySumMapper not found    at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2195)    at org.apache.hadoop.mapreduce.task.JobContextImpl.getMapperClass(JobContextImpl.java:186)    at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:745)    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) 核心： No job jar file set.  User classes may not be found. See Job or Job#setJar(String). Job jar is not present. Not adding any jar to the list of resources. 找不到jar包。   解决方法： Configuration conf = new Configuration();conf.set("mapreduce.job.jar", "salarysum.jar");Job job = Job.getInstance(conf, "Salary Sum"); 主类中设置jar包名salarysum.jar。

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