[HADOOP-6590] Add a username check for hadoop sub-commands

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.22.0, 3.0.0-alpha1
• Fix Version/s: 3.0.0-alpha1
• Component/s: scripts
• Assignee: John Smith
• Reporter: Scott Chen
• Created: 22/Feb/10 21:33
• Updated: 12/May/16 18:25
• Resolved: 10/Dec/14 21:41

Description

We experienced a case that sometimes we accidentally started HDFS or MAPREDUCE with root user. Then the directory permission will be modified and we have to chown them. It will be nice if there can be a username checking in the hadoop-daemon.sh script so that we always start with the desired username.

Issue Links

• is related to: HADOOP-11010 Post-9902 "Umbrella" JIRA
• relates to: HADOOP-7652 Provide a mechanism for a client Hadoop configuration to 'poison' daemon startup; i.e., disallow daemon start up on a client config.