Trivial Description
Few documentation correction required in hadoop-yarn/hadoop-yarn-site/YarnApplicationSecurity.html
1. Suring AM startup, log in to Kerberos.
Don’t. Rely on the lifespan of the
renewed automatically; the AM pushes out
In an insecure cluster, the application will run as the identity of the account of the node manager, typically something such as yarn or mapred. By default, the application will access HDFS as that user, with a different home directory, and with a different user identified in audit logs and on file system owner attributes.
Need to reframe sentence.