[YARN-8389] Improve the description of machine-list property in Federation docs

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.0, 3.1.1
• Fix Version/s: 3.2.0, 3.1.1
• Component/s: documentation, federation
• Hadoop Flags: Reviewed
• Assignee: Takanobu Asanuma
• Reporter: Takanobu Asanuma
• Created: 04/Jun/18 12:49
• Updated: 05/Jun/18 01:07
• Resolved: 04/Jun/18 16:29

Description

The current example and the description for machine-list property seem to be a bit ambiguous.

http://hadoop.apache.org/docs/r3.1.0/hadoop-yarn/hadoop-yarn-site/Federation.html#Optional: