1. Error: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class mp.filetest.WordCount2$Map not found
hadoop@ssmaster:~/java_program$ hadoop jar hadoop_mapr_wordcount.jar /input /output 16/10/24 08:22:41 INFO client.RMProxy: Connecting to ResourceManager at ssmaster/192.168.249.144:8032 16/10/24 08:22:42 WARN mapreduce.JobResourceUploader: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this. 16/10/24 08:22:42 WARN mapreduce.JobResourceUploader: No job jar file set. User classes may not be found. See Job or Job#setJar(String). 16/10/24 08:22:42 INFO input.FileInputFormat: Total input paths to process : 1 16/10/24 08:22:43 INFO mapreduce.JobSubmitter: number of splits:1 16/10/24 08:22:44 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1477315002921_0003 16/10/24 08:22:44 INFO mapred.YARNRunner: Job jar is not present. Not adding any jar to the list of resources. 16/10/24 08:22:44 INFO impl.YarnClientImpl: Submitted application application_1477315002921_0003 16/10/24 08:22:44 INFO mapreduce.Job: The url to track the job: http://ssmaster:8088/proxy/application_1477315002921_0003/ 16/10/24 08:22:44 INFO mapreduce.Job: Running job: job_1477315002921_0003 16/10/24 08:22:57 INFO mapreduce.Job: Job job_1477315002921_0003 running in uber mode : false 16/10/24 08:22:57 INFO mapreduce.Job: map 0% reduce 0% 16/10/24 08:23:04 INFO mapreduce.Job: Task Id : attempt_1477315002921_0003_m_000000_0, Status : FAILED Error: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class mp.filetest.WordCount2$Map not found at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2154) at org.apache.hadoop.mapreduce.task.JobContextImpl.getMapperClass(JobContextImpl.java:186) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:742) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:163) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1656) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158) Caused by: java.lang.ClassNotFoundException: Class mp.filetest.WordCount2$Map not found at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2060) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2152) ... 8 more 16/10/24 08:23:12 INFO mapreduce.Job: Task Id : attempt_1477315002921_0003_m_000000_1, Status : FAILED Error: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class mp.filetest.WordCount2$Map not found at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2154) at org.apache.hadoop.mapreduce.task.JobContextImpl.getMapperClass(JobContextImpl.java:186) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:742) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:163) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1656) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158) Caused by: java.lang.ClassNotFoundException: Class mp.filetest.WordCount2$Map not found at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2060) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2152) ... 8 more 16/10/24 08:23:21 INFO mapreduce.Job: Task Id : attempt_1477315002921_0003_m_000000_2, Status : FAILED Error: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class mp.filetest.WordCount2$Map not found at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2154) at org.apache.hadoop.mapreduce.task.JobContextImpl.getMapperClass(JobContextImpl.java:186) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:742) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:163) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1656) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158) Caused by: java.lang.ClassNotFoundException: Class mp.filetest.WordCount2$Map not found at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2060) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2152)