hadoop 3.x 运行Mapreduce集群遇到的问题Container exited with a non-zero exit code 1. Error file: prelaunch.err
运行Mapreduce集群时候出现报错:Containerexitedwithanon-zeroexitcode1.Errorfile:prelaunch.err.Last4096bytesofprelaunch.err:Last4096bytesofstderr:错误:找不到或无法加载主类org.apache.hadoop.mapreduce.v2.app.MRAppMaster解决方法:在主机