著碗花生酱的博客Error: Could not find or load main class org.apache.hadoop.mapreduce.v2.app.MRAp pMaster Please check whether your etc/hadoop/mapred-site.xml contains the below configur ation:
愿你被这个世界温暖相待的博客在运行MapReduce程序中把报错如下: java.lang.Exception: java.lang.NullPointerException at org.apache.hadoop.mapred.LocalJobRunner$Job.runTasks(LocalJobRunner.java:492) at org.apache.hadoop.mapred....
Dafei_Rabbit的博客Container exited with a non-zero exit code 1. Error file: prelaunch.err. Last 4096 bytes of prelaunch...log4j:WARN No appenders could be found for logger (org.apache.hadoop.mapreduce.v2.app.MRAppMaster).