[HADOOP-13940] Document the missing envvars commands

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha2
• Fix Version/s: 2.9.0, 3.0.0-alpha2
• Component/s: documentation
• Hadoop Flags: Reviewed
• Assignee: Yiqun Lin
• Reporter: Yiqun Lin
• Created: 23/Dec/16 12:31
• Updated: 28/Dec/16 04:39
• Resolved: 27/Dec/16 15:21

Description

In HADOOP-12366, it introduced the new command to display computed Hadoop environment variables, for example JAVA_HOME, HADOOP_CONF_DIR, etc. But the new commands haven't been documented except hdfs envvars.

Issue Links

• relates to: HADOOP-12366 expose calculated paths