Linlin Zhou created YARN-6999: --------------------------------- Summary: Add log about how to solve Error: Could not find or load main class org.apache.hadoop.mapreduce.v2.app.MRAppMaster Key: YARN-6999 URL: https://issues.apache.org/jira/browse/YARN-6999 Project: Hadoop YARN Issue Type: Improvement Components: documentation, security Affects Versions: 3.0.0-beta1 Environment: All operating systems. Reporter: Linlin Zhou Priority: Minor Fix For: 3.0.0-beta1
According Setting up a Single Node Cluster [https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/SingleCluster.html], we would still failed to run the MapReduce job example. Due to a security fix, yarn use user's environment variables to init, and user's environment variable usually doesn't include MapReduce related settings. So we need to add the related config in etc/hadoop/mapred-site.xml manually. Currently the log only tells there is an Error: Could not find or load main class org.apache.hadoop.mapreduce.v2.app.MRAppMaster, without suggestion on how to solve it. I want to add the useful suggestion in log. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-dev-h...@hadoop.apache.org